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Torsion bar Genuine Porsche part 90134310114
Code: 90134310114
Genuine Porsche part
Torsion bar
The product code 90134310114 was also found on these diagrams
Additional information:
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
Vehicle Group
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Price: £739.91
Orderable - 14 - 28 Days
Related products
FT18
Product Information
SET OF 2, One pair is required per vehicle.
Fits:
Porsche 911: 1965 through 1989
Porsche 912: 1965 through 1969
Porsche 930 (Turbo): 1975 through 1989
Choose from the following torsion-bar rates: 19 mm, 20 mm, 21 mm, 22 mm, 23 mm or 24 mm.
The different rates allow the front suspension setup to be tailored to suit anything from a standard-style road car through to fast-road, autocross and competition applications.
Product Information
High-performance Sway-A-Way tubular front torsion bar set for classic Porsche 911 models. Designed as a direct replacement and performance upgrade for the factory front torsion bars, these bars allow you to select the spring rate that best matches the vehicle's intended use, suspension specification and handling requirements.
Unlike conventional solid torsion bars, the tubular / hollow construction is designed to achieve the required torsional spring rate while reducing unnecessary component weight. This provides an excellent strength-to-weight solution for performance-focused Porsche suspension systems.
Sway-A-Way torsion bars are manufactured from high-strength 4340 alloy steel, a material widely used where excellent fatigue resistance and strength under repeated torsional loading are required.
The bars are precision manufactured, heat treated and finished for durability, helping provide a consistent spring characteristic during demanding road and track use. Sway-A-Way product information specifies centreless-ground alloy-steel construction, heat treatment and protective coating on its Porsche torsion bars.
Choosing the Correct Torsion Bar Rate
The torsion bar acts as the spring in the classic Porsche 911 suspension system.
Increasing the torsion-bar rate increases suspension stiffness.
This can provide:
• Reduced body roll
• Sharper steering response
• Improved control during aggressive cornering
• Reduced suspension movement under load
• Better support for performance tyres
• Improved chassis response on track.
However, increasing torsion-bar stiffness also changes ride quality and the overall balance of the chassis.
19 mm
A softer option suited to cars where road comfort and near-standard suspension behaviour are priorities.
Ideal for:
• Standard or lightly modified cars
• Road use Restoration projects
• Drivers wanting compliant suspension behaviour
20 mm
A mild performance increase that offers a useful step toward sharper handling without moving too far away from road-oriented suspension characteristics.
Ideal for:
• Fast-road cars
• Uprated road suspension
• Weekend sports cars
• Mild performance builds
Installation & Performance Notes:
• Balanced Handling: When upgrading the front bars to 20mm, it is highly recommended to also upgrade the rear torsion bars to maintain the 911’s neutral handling balance. Pairing 20mm front bars with 26mm or 27mm rear bars is a common "sport" configuration.
• Indexing: These bars utilize the factory splined ends. Correct indexing (clocking) during installation is critical to achieving the proper stance. Document your original bar's orientation before removal to simplify the setup of your new ride height.
• Maintenance: Thoroughly clean the female splines in the A-arms and adjustment caps. Apply a high-quality waterproof grease to the splines during assembly to prevent future seizing and "creaking" during cornering.
21 mm
A more noticeable performance upgrade providing increased front-end support and reduced body movement.
Ideal for:
• Fast-road driving
• Autocross
• Dual road/track use
• Performance suspension builds
A 21 mm effective rate represents a substantial increase in stiffness compared with a standard 19 mm front torsion-bar rate.
Performance & Installation Notes:
• System Balance: To prevent excessive understeer, 21mm front bars should generally be paired with upgraded rear torsion bars (typically 27mm or 28mm) to keep the 911’s handling neutral.
• Damping Requirements: Because the spring rate is significantly higher than stock, standard comfort-valved shocks may be overwhelmed. Performance-valved dampers (such as Bilstein B8 or similar) are highly recommended.
• Spline Care: Always clean the female splines in the A-arms and adjustment caps before installation. Use high-quality waterproof grease on the splines to prevent future seizing and ensure quiet operation.
22 mm
A performance-focused option suitable for cars using uprated dampers, tyres and complementary rear suspension upgrades.
Ideal for:
• Aggressive fast-road use
• Track days
• Lightweight builds
Installation & Setup Notes
• Weight Benefit: The tubular design reduces unsprung mass at the front of the vehicle, allowing the suspension to react more quickly to road imperfections compared to a solid bar of the same rate.
• Spline Care: These bars feature factory-style splined ends. Ensure the female splines in the A-arms are clean and lubricated with a high-pressure waterproof grease during assembly to prevent "creaking."
• Indexing: Due to the 22mm diameter, indexing is sensitive. Document your original bar position to ensure you can accurately set your desired ride height (factory or "Euro" spec).
23 mm
A significantly stiffer option intended primarily for serious performance and competition applications.
Ideal for:
• Track cars
• Autocross
• Competition builds
• RSR-style projects
• Cars using competition-spec dampers and rear torsion bars
The 23 mm tubular version is described by X-Sway as a competition-oriented front torsion bar with substantially increased rate over a stock 19 mm setup.
Performance & Installation Notes:
• Balanced Setup: At a 23mm front rate, you must upgrade your rear torsion bars (typically to 30mm or 31mm) to maintain the 911’s handling balance. Using these with stock rear bars will result in severe understeer.
• Damping Requirements: This spring rate requires aggressive damping. We recommend competition-valved struts (such as Bilstein RSR-spec or custom-valved dampers) to prevent the front end from feeling "bouncy."
• Spline Maintenance: Clean and inspect the female splines in your A-arms and adjustment caps. Apply a high-quality waterproof grease to the splines during installation to ensure quiet operation and prevent seizing.
• Indexing: Because these bars are so stiff, indexing is extremely sensitive. A single spline adjustment will move the ride height significantly; document your starting position carefully.
24 mm
The stiffest option in this range, intended for highly developed suspension setups where maximum front spring control is required.
Ideal for:
• Dedicated track cars
• Motorsport applications
• Lightweight competition builds
• Cars with suitably matched rear spring rates and dampers
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FT18
The product you are viewing cross references to these numbers
Product Information
Sway-A-Way torsion bars are engineered as a direct replacement for the original front torsion bars and are available in a range of rate options from 19 mm through to 24 mm, allowing the suspension setup to be matched to the intended use of the vehicle.SET OF 2, One pair is required per vehicle.
Fits:
Porsche 911: 1965 through 1989
Porsche 912: 1965 through 1969
Porsche 930 (Turbo): 1975 through 1989
Choose from the following torsion-bar rates: 19 mm, 20 mm, 21 mm, 22 mm, 23 mm or 24 mm.
The different rates allow the front suspension setup to be tailored to suit anything from a standard-style road car through to fast-road, autocross and competition applications.
Product Information
High-performance Sway-A-Way tubular front torsion bar set for classic Porsche 911 models. Designed as a direct replacement and performance upgrade for the factory front torsion bars, these bars allow you to select the spring rate that best matches the vehicle's intended use, suspension specification and handling requirements.
Unlike conventional solid torsion bars, the tubular / hollow construction is designed to achieve the required torsional spring rate while reducing unnecessary component weight. This provides an excellent strength-to-weight solution for performance-focused Porsche suspension systems.
Sway-A-Way torsion bars are manufactured from high-strength 4340 alloy steel, a material widely used where excellent fatigue resistance and strength under repeated torsional loading are required.
The bars are precision manufactured, heat treated and finished for durability, helping provide a consistent spring characteristic during demanding road and track use. Sway-A-Way product information specifies centreless-ground alloy-steel construction, heat treatment and protective coating on its Porsche torsion bars.
Choosing the Correct Torsion Bar Rate
The torsion bar acts as the spring in the classic Porsche 911 suspension system.
Increasing the torsion-bar rate increases suspension stiffness.
This can provide:
• Reduced body roll
• Sharper steering response
• Improved control during aggressive cornering
• Reduced suspension movement under load
• Better support for performance tyres
• Improved chassis response on track.
However, increasing torsion-bar stiffness also changes ride quality and the overall balance of the chassis.
19 mm
A softer option suited to cars where road comfort and near-standard suspension behaviour are priorities.
Ideal for:
• Standard or lightly modified cars
• Road use Restoration projects
• Drivers wanting compliant suspension behaviour
20 mm
A mild performance increase that offers a useful step toward sharper handling without moving too far away from road-oriented suspension characteristics.
Ideal for:
• Fast-road cars
• Uprated road suspension
• Weekend sports cars
• Mild performance builds
Installation & Performance Notes:
• Balanced Handling: When upgrading the front bars to 20mm, it is highly recommended to also upgrade the rear torsion bars to maintain the 911’s neutral handling balance. Pairing 20mm front bars with 26mm or 27mm rear bars is a common "sport" configuration.
• Indexing: These bars utilize the factory splined ends. Correct indexing (clocking) during installation is critical to achieving the proper stance. Document your original bar's orientation before removal to simplify the setup of your new ride height.
• Maintenance: Thoroughly clean the female splines in the A-arms and adjustment caps. Apply a high-quality waterproof grease to the splines during assembly to prevent future seizing and "creaking" during cornering.
21 mm
A more noticeable performance upgrade providing increased front-end support and reduced body movement.
Ideal for:
• Fast-road driving
• Autocross
• Dual road/track use
• Performance suspension builds
A 21 mm effective rate represents a substantial increase in stiffness compared with a standard 19 mm front torsion-bar rate.
Performance & Installation Notes:
• System Balance: To prevent excessive understeer, 21mm front bars should generally be paired with upgraded rear torsion bars (typically 27mm or 28mm) to keep the 911’s handling neutral.
• Damping Requirements: Because the spring rate is significantly higher than stock, standard comfort-valved shocks may be overwhelmed. Performance-valved dampers (such as Bilstein B8 or similar) are highly recommended.
• Spline Care: Always clean the female splines in the A-arms and adjustment caps before installation. Use high-quality waterproof grease on the splines to prevent future seizing and ensure quiet operation.
22 mm
A performance-focused option suitable for cars using uprated dampers, tyres and complementary rear suspension upgrades.
Ideal for:
• Aggressive fast-road use
• Track days
• Lightweight builds
Installation & Setup Notes
• Weight Benefit: The tubular design reduces unsprung mass at the front of the vehicle, allowing the suspension to react more quickly to road imperfections compared to a solid bar of the same rate.
• Spline Care: These bars feature factory-style splined ends. Ensure the female splines in the A-arms are clean and lubricated with a high-pressure waterproof grease during assembly to prevent "creaking."
• Indexing: Due to the 22mm diameter, indexing is sensitive. Document your original bar position to ensure you can accurately set your desired ride height (factory or "Euro" spec).
23 mm
A significantly stiffer option intended primarily for serious performance and competition applications.
Ideal for:
• Track cars
• Autocross
• Competition builds
• RSR-style projects
• Cars using competition-spec dampers and rear torsion bars
The 23 mm tubular version is described by X-Sway as a competition-oriented front torsion bar with substantially increased rate over a stock 19 mm setup.
Performance & Installation Notes:
• Balanced Setup: At a 23mm front rate, you must upgrade your rear torsion bars (typically to 30mm or 31mm) to maintain the 911’s handling balance. Using these with stock rear bars will result in severe understeer.
• Damping Requirements: This spring rate requires aggressive damping. We recommend competition-valved struts (such as Bilstein RSR-spec or custom-valved dampers) to prevent the front end from feeling "bouncy."
• Spline Maintenance: Clean and inspect the female splines in your A-arms and adjustment caps. Apply a high-quality waterproof grease to the splines during installation to ensure quiet operation and prevent seizing.
• Indexing: Because these bars are so stiff, indexing is extremely sensitive. A single spline adjustment will move the ride height significantly; document your starting position carefully.
24 mm
The stiffest option in this range, intended for highly developed suspension setups where maximum front spring control is required.
Ideal for:
• Dedicated track cars
• Motorsport applications
• Lightweight competition builds
• Cars with suitably matched rear spring rates and dampers
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FT18
90134310112
90134310114
90134310212
90134310214
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Please select the size
Prices from: £263.59
Shop Securely
12 Month Warranty
Worldwide Delivery
90134310
Product Information
Fits:
Porsche 911/911S 1965-67
Porsche 911 S/TU/L 1968
Porsche 911 T/E/S 1969
Porsche 911 T/S 1970-73
Porsche 911 E 1970-73
Porsche 911 CARRERA 2.7L 1970-73
Porsche 912 1965-69
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 34
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134310
The product you are viewing cross references to these numbers
Product Information
Torsion bar 19mm. Fits:
Porsche 911/911S 1965-67
Porsche 911 S/TU/L 1968
Porsche 911 T/E/S 1969
Porsche 911 T/S 1970-73
Porsche 911 E 1970-73
Porsche 911 CARRERA 2.7L 1970-73
Porsche 912 1965-69
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 34
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134310
90134310112
90134310114
90134310212
90134310214
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Select an option
Prices from: £739.91
Shop Securely
12 Month Warranty
Worldwide Delivery
209202
Product Information
Sold per kit, 1 kit req'd per car.
Fits:
Porsche 911/912/930 1965-89
Porsche 914 1970-76
QuickChange Torsion Bars are Plated & Plugged and include a female threaded end that you can engage with a bolt to use as a handle for easier extraction / insertion.
Use the rears bars in combination with our QuickChange™ Spring Plate products for fast torsion bar swapping and re-indexing. QuickChange™ Torsion Bars can be extracted through the QuickChange™ Spring Plate without removing any bolts. Alignment settings are maintained. You don't even need to remove the wheel from the car. Changing torsion bars is a 5 minute per side operation!
A QuickChange™ Insert is available separately for converting your existing hollow torsion bars.
QuickChange™ Torsion Bars make it easy to dislodge a stuck bar, and thereby offer benefits even when used on the front and with factory spring plates (factory spring do not allow the bars to be extracted without removing the plates).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
209202
The product you are viewing cross references to these numbers
Product Information
QuickChange™ Torsion Bars, FRONTSold per kit, 1 kit req'd per car.
Fits:
Porsche 911/912/930 1965-89
Porsche 914 1970-76
QuickChange Torsion Bars are Plated & Plugged and include a female threaded end that you can engage with a bolt to use as a handle for easier extraction / insertion.
Use the rears bars in combination with our QuickChange™ Spring Plate products for fast torsion bar swapping and re-indexing. QuickChange™ Torsion Bars can be extracted through the QuickChange™ Spring Plate without removing any bolts. Alignment settings are maintained. You don't even need to remove the wheel from the car. Changing torsion bars is a 5 minute per side operation!
A QuickChange™ Insert is available separately for converting your existing hollow torsion bars.
QuickChange™ Torsion Bars make it easy to dislodge a stuck bar, and thereby offer benefits even when used on the front and with factory spring plates (factory spring do not allow the bars to be extracted without removing the plates).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
209202
2061003
90134310112
90134310114
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 914 (1970-1976)
Select an option
Prices from: £575.00
Shop Securely
12 Month Warranty
Worldwide Delivery
FS18
Product Information
SET OF 2, One pair is required per vehicle.
Fits:
Porsche 911: 1965 through 1989
Porsche 912: 1965 through 1969
Porsche 930 (Turbo): 1975 through 1989 (Verify diameter requirement; some Turbos utilized larger bars for track use)
Always confirm the required torsion-bar diameter and vehicle suspension specification before ordering.
Choose from the following torsion-bar rates: 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm 24 mm, 25 mm or 26 mm.
With sizes ranging from the factory-style 19 mm rate through to the competition-focused 26 mm option, this Sway-A-Way range allows the front suspension to be tailored for standard road use, fast-road driving, track days or dedicated motorsport applications.
Product Information
The classic Porsche 911 uses torsion bars as its suspension springs. As the front suspension moves, the torsion bar twists along its axis and provides the resistance necessary to support and control the vehicle.
Increasing the torsion-bar diameter increases the spring rate, providing greater resistance to suspension movement. This can help reduce front-end dive under braking, limit body roll during cornering and provide a more immediate chassis response.
Manufactured using solid high-strength 4340 alloy steel, Sway-A-Way torsion bars are designed to withstand repeated torsional loading while providing consistent spring characteristics.
Choosing the Correct Torsion Bar Rate
19 mm Solid (OEM Standard Diameter)
The 19 mm torsion bar is the factory-style option within the range and is ideal for owners looking to replace tired original torsion bars while maintaining near-standard suspension characteristics. Note: Engineered as a direct-fit replacement for the front independent suspension.
Recommended for:
• Standard road cars
• Original-specification restorations
• Touring use
• Cars where ride comfort is important
• Owners seeking factory-style front suspension behaviour
This is the natural choice where maintaining the classic Porsche road feel is the priority.
Installation & Setup Notes:
• Indexing & Ride Height: These bars utilize the factory splined ends. Correct indexing (clocking) during installation is critical to achieving the proper stance. Small adjustments at the splines result in significant changes at the wheel.
• Grease: Always apply a high-quality Moly-based or waterproof grease to the splines before sliding the bars into the A-arms and adjustment caps to prevent future seizing and "creaking" during cornering.
• Upgrade Path: If you are preparing your 911 for competitive autocross or track days, consider stepping up to a 21mm or 22mm bar. This 19mm bar is specifically optimized for street comfort and original factory handling dynamics.
20 mm Solid (Performance Upgrade)
The 20 mm torsion bar provides a mild increase in front spring rate compared with the standard 19 mm setup. It offers sharper suspension response and reduced front-end movement without moving too far away from road-oriented ride characteristics.
Spring Rate: Higher than OEM (Approximately 23% stiffer than 19mm bars)
Note: A popular choice for Carrera models looking to sharpen front-end response or for early "long-hood" cars being prepared for rally or fast road use.
Recommended for:
• Fast-road cars
• Mild performance upgrades
• Weekend sports cars
• Uprated road suspension
• Cars using performance dampers and tyres
A good choice for owners wanting a noticeable but relatively restrained suspension upgrade.
Installation & Performance Notes:
• Balanced Handling: When increasing the front bar diameter to 20mm, it is highly recommended to also upgrade the rear torsion bars (typically to 26mm or 27mm) to maintain the 911’s neutral handling balance and prevent induced understeer.
• Spline Maintenance: Thoroughly clean the female splines in the A-arms and adjustment caps. Use a high-pressure waterproof grease on the splines during assembly to prevent "popping" noises and ensure easy adjustment in the future.
• Indexing: Because these bars use the factory spline count, small changes in indexing result in significant ride height shifts. We recommend documenting your original bar's orientation before removal.
21 mm Solid (Performance Upgrade)
The 21 mm torsion bar provides a more significant increase in front spring rate and is well suited to performance-oriented road and occasional track cars. Spring Rate: Stiffer than OEM (Approximately 45–50% stiffer than 19mm bars).
Note: This is a common performance upgrade for Carrera 3.2 and SC models to improve front-end bite and overall chassis responsiveness.
Recommended for:
• Fast-road Porsche 911s
• Road and track-day cars
• Autocross Carrera and SC performance builds
• Cars using uprated dampers
• Modern high-grip tyre packages
The increased rate provides stronger resistance to front suspension compression during braking and cornering.
Installation & Performance Notes:
• Chassis Balance: Upgrading to 21mm front bars typically requires a corresponding upgrade to the rear torsion bars (often to 27mm or 28mm) to maintain the 911's intended handling characteristics and prevent excessive understeer.
• Shock Matching: Due to the significantly increased spring rate, factory comfort shocks will likely be under-damped. For best results, pair these with performance-valved shocks (such as Bilstein Clubman or Koni Sport).
• Indexing: Document your factory bar indexing before removal. Because of the high spring rate, even a one-spline difference in "clocking" will result in a dramatic change in ride height.
22 mm Solid
The 22 mm solid torsion bar moves further toward a track-focused suspension setup. It provides increased front-end support and reduced body movement, making it suitable for cars where handling response is prioritised over standard road comfort. Spring Rate: Stock Equivalent. Note: While 22mm is typically a performance diameter, this SKU is specifically manufactured to provide a factory-style ride quality.
Recommended for:
• Aggressive fast-road use
• Frequent track days
• Autocross
• Lightweight performance cars
• Uprated dampers
• Complementary rear torsion-bar upgrades
Installation & Setup Notes:
• Spline Fitment: These bars utilize the factory-style splined ends. Ensure the female splines in your A-arms and adjustment caps are thoroughly cleaned and free of debris before installation.
• Lubrication: Use a high-quality, high-pressure waterproof grease on the splines during assembly to prevent "popping" or "creaking" and to ensure easy removal in the future.
• Indexing: Because small changes in spline "clocking" result in significant ride height shifts, document your original bar's orientation before removal to simplify the setup of your new stance.
23 mm Solid (Competition Grade)
The 23 mm solid torsion bar is a substantial performance upgrade designed for aggressive road, track and competition applications. It provides considerably greater resistance to front-end dive and body roll than the factory-style 19 mm configuration. Spring Rate: Significantly higher than OEM (Approx. 110–120% stiffer than 19mm bars). Note: Ideal for 911s used in competitive track environments, autocross, or for owners who prefer a very firm, communicative chassis.
Recommended for:
• Track-focused Porsche 911s
• Motorsport-inspired build
• Autocross
• Competition applications
• Cars using performance or competition dampers
• High-grip tyre setup
At this level, the complete front-to-rear suspension balance becomes particularly important.
Installation & Performance Notes:
• Chassis Reinforcement: Because 23mm bars exert significantly more force on the chassis than factory bars, it is highly recommended to inspect—and potentially reinforce—the torsion bar mounting points and A-arm brackets.
• System Balance: To maintain neutral handling, 23mm front bars must be paired with much stiffer rear bars (typically 30mm or 31mm). Failure to balance the rear will result in severe understeer.
• Shock Damping: Standard or even "Sport" street shocks will be insufficient for this spring rate. Competition-valved dampers (such as Bilstein RSR or Custom Valved Koni) are necessary to control the oscillation of a 23mm bar.
• Spline Care: Apply high-pressure waterproof grease to the splines during assembly to prevent "popping" noises and to ensure the bars do not seize in the A-arms.
24 mm Solid
The 24 mm solid front torsion bar provides a high spring rate intended primarily for developed performance and competition suspension packages.
Recommended for:
• Dedicated track cars
• Competition Porsche 911s
• Lightweight race builds
• High-grip tyre applications
• Cars with substantially uprated rear torsion bars
• Competition-valved dampers
This size is most appropriate where chassis control takes priority over road comfort.
25 mm Solid
The 25 mm solid torsion bar is a very high-rate front suspension option aimed at serious motorsport applications.
Recommended for:
• Race-prepared Porsche 911s
• Motorsport builds
• High-downforce or high-grip cars
• Competition suspension systems
• Vehicles with appropriately matched rear spring rates
Professional suspension setup is strongly recommended at this level of spring stiffness.
26 mm Solid
The 26 mm solid torsion bar represents the most aggressive option in this range. Designed for highly developed competition vehicles, it provides extremely high resistance to front suspension movement and should only be used as part of a properly engineered suspension package.
Recommended for:
• Dedicated race cars
• Motorsport applications
• Highly developed track builds
• Very high-grip suspension setups
• Cars using competition-spec dampers
• Vehicles with suitably matched rear torsion-bar rates
For typical road use, one of the smaller sizes will generally provide a more appropriate balance of suspension performance and compliance.
Why Upgrade Front Torsion Bars?
On a classic Porsche 911, the torsion bar performs the same fundamental function as a conventional coil spring. When the suspension moves, the bar twists. The resistance of the bar to this twisting movement determines the effective spring rate.
Increasing the torsion-bar diameter can provide:
• Reduced front-end dive under braking
• Reduced body roll Improved steering response
• Greater suspension control
• More immediate turn-in
• Better support for performance tyres
• Improved chassis response during track driving
• Increased resistance to suspension compression
The larger the solid torsion-bar diameter, the greater the spring rate.
Solid Construction
These torsion bars use a traditional solid construction. Solid torsion bars are an excellent choice for owners who prioritise performance, durability and value over the weight saving provided by tubular alternatives.
Advantages include:
• Proven construction
• High torsional strength
• Consistent spring behaviour
• Excellent durability
• Wide choice of spring rates
• Competitive cost compared with hollow alternatives
• Suitable for road and competition use
For customers primarily focused on achieving a specific spring rate rather than reducing suspension component weight, the solid Sway-A-Way range provides an excellent solution.
4340 Alloy Steel
Sway-A-Way uses high-strength 4340 alloy steel for its Porsche torsion bars. This material is particularly suitable for components subjected to repeated twisting loads because of its combination of strength and fatigue resistance.
The manufacturing process includes:
• High-strength alloy-steel construction
• Precision centreless grinding
• Heat treatment
• Shot peening
• Controlled dimensions
• Protective powder coating
These processes help provide predictable spring characteristics and long-term durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FS18
The product you are viewing cross references to these numbers
Product Information
High-performance Sway-A-Way solid front torsion bars for classic Porsche 911 models. Designed as direct replacements for the original front torsion bars, these performance bars allow you to select the front spring rate that best suits your Porsche, from a factory-style replacement through to a considerably firmer competition suspension setup.SET OF 2, One pair is required per vehicle.
Fits:
Porsche 911: 1965 through 1989
Porsche 912: 1965 through 1969
Porsche 930 (Turbo): 1975 through 1989 (Verify diameter requirement; some Turbos utilized larger bars for track use)
Always confirm the required torsion-bar diameter and vehicle suspension specification before ordering.
Choose from the following torsion-bar rates: 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm 24 mm, 25 mm or 26 mm.
With sizes ranging from the factory-style 19 mm rate through to the competition-focused 26 mm option, this Sway-A-Way range allows the front suspension to be tailored for standard road use, fast-road driving, track days or dedicated motorsport applications.
Product Information
The classic Porsche 911 uses torsion bars as its suspension springs. As the front suspension moves, the torsion bar twists along its axis and provides the resistance necessary to support and control the vehicle.
Increasing the torsion-bar diameter increases the spring rate, providing greater resistance to suspension movement. This can help reduce front-end dive under braking, limit body roll during cornering and provide a more immediate chassis response.
Manufactured using solid high-strength 4340 alloy steel, Sway-A-Way torsion bars are designed to withstand repeated torsional loading while providing consistent spring characteristics.
Choosing the Correct Torsion Bar Rate
19 mm Solid (OEM Standard Diameter)
The 19 mm torsion bar is the factory-style option within the range and is ideal for owners looking to replace tired original torsion bars while maintaining near-standard suspension characteristics. Note: Engineered as a direct-fit replacement for the front independent suspension.
Recommended for:
• Standard road cars
• Original-specification restorations
• Touring use
• Cars where ride comfort is important
• Owners seeking factory-style front suspension behaviour
This is the natural choice where maintaining the classic Porsche road feel is the priority.
Installation & Setup Notes:
• Indexing & Ride Height: These bars utilize the factory splined ends. Correct indexing (clocking) during installation is critical to achieving the proper stance. Small adjustments at the splines result in significant changes at the wheel.
• Grease: Always apply a high-quality Moly-based or waterproof grease to the splines before sliding the bars into the A-arms and adjustment caps to prevent future seizing and "creaking" during cornering.
• Upgrade Path: If you are preparing your 911 for competitive autocross or track days, consider stepping up to a 21mm or 22mm bar. This 19mm bar is specifically optimized for street comfort and original factory handling dynamics.
20 mm Solid (Performance Upgrade)
The 20 mm torsion bar provides a mild increase in front spring rate compared with the standard 19 mm setup. It offers sharper suspension response and reduced front-end movement without moving too far away from road-oriented ride characteristics.
Spring Rate: Higher than OEM (Approximately 23% stiffer than 19mm bars)
Note: A popular choice for Carrera models looking to sharpen front-end response or for early "long-hood" cars being prepared for rally or fast road use.
Recommended for:
• Fast-road cars
• Mild performance upgrades
• Weekend sports cars
• Uprated road suspension
• Cars using performance dampers and tyres
A good choice for owners wanting a noticeable but relatively restrained suspension upgrade.
Installation & Performance Notes:
• Balanced Handling: When increasing the front bar diameter to 20mm, it is highly recommended to also upgrade the rear torsion bars (typically to 26mm or 27mm) to maintain the 911’s neutral handling balance and prevent induced understeer.
• Spline Maintenance: Thoroughly clean the female splines in the A-arms and adjustment caps. Use a high-pressure waterproof grease on the splines during assembly to prevent "popping" noises and ensure easy adjustment in the future.
• Indexing: Because these bars use the factory spline count, small changes in indexing result in significant ride height shifts. We recommend documenting your original bar's orientation before removal.
21 mm Solid (Performance Upgrade)
The 21 mm torsion bar provides a more significant increase in front spring rate and is well suited to performance-oriented road and occasional track cars. Spring Rate: Stiffer than OEM (Approximately 45–50% stiffer than 19mm bars).
Note: This is a common performance upgrade for Carrera 3.2 and SC models to improve front-end bite and overall chassis responsiveness.
Recommended for:
• Fast-road Porsche 911s
• Road and track-day cars
• Autocross Carrera and SC performance builds
• Cars using uprated dampers
• Modern high-grip tyre packages
The increased rate provides stronger resistance to front suspension compression during braking and cornering.
Installation & Performance Notes:
• Chassis Balance: Upgrading to 21mm front bars typically requires a corresponding upgrade to the rear torsion bars (often to 27mm or 28mm) to maintain the 911's intended handling characteristics and prevent excessive understeer.
• Shock Matching: Due to the significantly increased spring rate, factory comfort shocks will likely be under-damped. For best results, pair these with performance-valved shocks (such as Bilstein Clubman or Koni Sport).
• Indexing: Document your factory bar indexing before removal. Because of the high spring rate, even a one-spline difference in "clocking" will result in a dramatic change in ride height.
22 mm Solid
The 22 mm solid torsion bar moves further toward a track-focused suspension setup. It provides increased front-end support and reduced body movement, making it suitable for cars where handling response is prioritised over standard road comfort. Spring Rate: Stock Equivalent. Note: While 22mm is typically a performance diameter, this SKU is specifically manufactured to provide a factory-style ride quality.
Recommended for:
• Aggressive fast-road use
• Frequent track days
• Autocross
• Lightweight performance cars
• Uprated dampers
• Complementary rear torsion-bar upgrades
Installation & Setup Notes:
• Spline Fitment: These bars utilize the factory-style splined ends. Ensure the female splines in your A-arms and adjustment caps are thoroughly cleaned and free of debris before installation.
• Lubrication: Use a high-quality, high-pressure waterproof grease on the splines during assembly to prevent "popping" or "creaking" and to ensure easy removal in the future.
• Indexing: Because small changes in spline "clocking" result in significant ride height shifts, document your original bar's orientation before removal to simplify the setup of your new stance.
23 mm Solid (Competition Grade)
The 23 mm solid torsion bar is a substantial performance upgrade designed for aggressive road, track and competition applications. It provides considerably greater resistance to front-end dive and body roll than the factory-style 19 mm configuration. Spring Rate: Significantly higher than OEM (Approx. 110–120% stiffer than 19mm bars). Note: Ideal for 911s used in competitive track environments, autocross, or for owners who prefer a very firm, communicative chassis.
Recommended for:
• Track-focused Porsche 911s
• Motorsport-inspired build
• Autocross
• Competition applications
• Cars using performance or competition dampers
• High-grip tyre setup
At this level, the complete front-to-rear suspension balance becomes particularly important.
Installation & Performance Notes:
• Chassis Reinforcement: Because 23mm bars exert significantly more force on the chassis than factory bars, it is highly recommended to inspect—and potentially reinforce—the torsion bar mounting points and A-arm brackets.
• System Balance: To maintain neutral handling, 23mm front bars must be paired with much stiffer rear bars (typically 30mm or 31mm). Failure to balance the rear will result in severe understeer.
• Shock Damping: Standard or even "Sport" street shocks will be insufficient for this spring rate. Competition-valved dampers (such as Bilstein RSR or Custom Valved Koni) are necessary to control the oscillation of a 23mm bar.
• Spline Care: Apply high-pressure waterproof grease to the splines during assembly to prevent "popping" noises and to ensure the bars do not seize in the A-arms.
24 mm Solid
The 24 mm solid front torsion bar provides a high spring rate intended primarily for developed performance and competition suspension packages.
Recommended for:
• Dedicated track cars
• Competition Porsche 911s
• Lightweight race builds
• High-grip tyre applications
• Cars with substantially uprated rear torsion bars
• Competition-valved dampers
This size is most appropriate where chassis control takes priority over road comfort.
25 mm Solid
The 25 mm solid torsion bar is a very high-rate front suspension option aimed at serious motorsport applications.
Recommended for:
• Race-prepared Porsche 911s
• Motorsport builds
• High-downforce or high-grip cars
• Competition suspension systems
• Vehicles with appropriately matched rear spring rates
Professional suspension setup is strongly recommended at this level of spring stiffness.
26 mm Solid
The 26 mm solid torsion bar represents the most aggressive option in this range. Designed for highly developed competition vehicles, it provides extremely high resistance to front suspension movement and should only be used as part of a properly engineered suspension package.
Recommended for:
• Dedicated race cars
• Motorsport applications
• Highly developed track builds
• Very high-grip suspension setups
• Cars using competition-spec dampers
• Vehicles with suitably matched rear torsion-bar rates
For typical road use, one of the smaller sizes will generally provide a more appropriate balance of suspension performance and compliance.
Why Upgrade Front Torsion Bars?
On a classic Porsche 911, the torsion bar performs the same fundamental function as a conventional coil spring. When the suspension moves, the bar twists. The resistance of the bar to this twisting movement determines the effective spring rate.
Increasing the torsion-bar diameter can provide:
• Reduced front-end dive under braking
• Reduced body roll Improved steering response
• Greater suspension control
• More immediate turn-in
• Better support for performance tyres
• Improved chassis response during track driving
• Increased resistance to suspension compression
The larger the solid torsion-bar diameter, the greater the spring rate.
Solid Construction
These torsion bars use a traditional solid construction. Solid torsion bars are an excellent choice for owners who prioritise performance, durability and value over the weight saving provided by tubular alternatives.
Advantages include:
• Proven construction
• High torsional strength
• Consistent spring behaviour
• Excellent durability
• Wide choice of spring rates
• Competitive cost compared with hollow alternatives
• Suitable for road and competition use
For customers primarily focused on achieving a specific spring rate rather than reducing suspension component weight, the solid Sway-A-Way range provides an excellent solution.
4340 Alloy Steel
Sway-A-Way uses high-strength 4340 alloy steel for its Porsche torsion bars. This material is particularly suitable for components subjected to repeated twisting loads because of its combination of strength and fatigue resistance.
The manufacturing process includes:
• High-strength alloy-steel construction
• Precision centreless grinding
• Heat treatment
• Shot peening
• Controlled dimensions
• Protective powder coating
These processes help provide predictable spring characteristics and long-term durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FS18
90134310112
90134310114
90134310212
90134310214
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
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FS19
Product Information
SET OF 2, One pair is required per vehicle.
Fits:
Porsche 914-4: 1970 through 1976
Porsche 914-6: 1970 through 1972
* Note: Always confirm the required torsion-bar diameter and vehicle suspension specification before ordering. Please confirm the front suspension and torsion-bar configuration before ordering for a Porsche 914-6.
The factory Porsche 914 front suspension uses 17.9 mm torsion bars, making the 17.9 mm Sway-A-Way option particularly appropriate where original-style spring characteristics are required. Larger 19 mm through 23 mm bars progressively increase the front spring rate for performance-oriented suspension setups.
As the front suspension moves, each torsion bar twists along its axis. Increasing the bar diameter increases its resistance to twisting, resulting in a higher spring rate.
An appropriately selected larger front torsion bar can help reduce nose-dive under braking, control body roll and provide sharper chassis response during cornering.
Manufactured using solid high-strength 4340 alloy steel, Sway-A-Way torsion bars are designed to withstand repeated torsional loading while providing consistent spring characteristics.
Choosing the Correct Torsion Bar Rate
17.9 mm Solid
The 17.9 mm solid front torsion bar is the closest choice to the original Porsche 914 front torsion-bar diameter.
It is well suited to road cars where maintaining compliant, factory-style suspension characteristics is the priority.
Spring Rate: Significant increase over stock 914/4 and 914/6 rates.
Note: This set is a direct replacement for the front factory bars. It is available in both solid and tubular designs to suit your specific build requirements.
Recommended for:
• Standard road cars
• Original-specification restorations
• Touring use
• Street-driven 914s
• Suspension refresh projects
• Cars where ride quality remains important
This is an excellent choice when replacing aged original bars without substantially increasing the front spring rate.
Installation & Performance Notes
• Balanced Handling: Because 17.9mm front bars are substantially stiffer than stock, you must ensure your rear springs (coil springs on the 914) are matched accordingly. Running these with stock rear springs may induce significant understeer.
• Indexing: The 914 front suspension uses the same spline-indexing system as the 911. Proper "clocking" is essential to achieve your desired ride height. Document the position of your original bars before removal.
• Lubrication: Always apply a high-quality waterproof grease to the splines during installation to prevent "creaking" and ensure the bars do not seize in the A-arms or adjustment caps over time.
19 mm Solid (High-Performance)
The 19 mm solid front torsion bar provides a noticeable increase in front spring rate compared with the standard 17.9 mm configuration.
It offers improved front-end control while remaining a practical choice for performance road and fast-road cars.
Spring Rate: Significant increase over stock 914-4 and 914-6 rates
Note: Engineered as a direct-fit replacement for the factory front torsion bars.
Recommended for:
• Fast-road Porsche 914s
• Performance road builds
• 914-6 conversions
• Uprated dampers
• Modern performance tyres
• Occasional track-day use
The increased stiffness can help reduce body roll and nose-dive while providing a more immediate steering response.
Installation & Performance Notes
• System Balance: Because 19mm front bars are extremely stiff for a lightweight 914, you must upgrade your rear coil springs to maintain a neutral handling balance. Failure to do so will result in significant understeer (pushing) in corners.
• Shock Damping: Standard comfort shocks will likely be insufficient for this spring rate. For the best performance, pair these with sport-valved dampers (such as Bilstein Sport or Koni) to control the increased rebound force.
• Indexing: The 914 uses a spline-indexing system to set ride height. Because the 19mm bar is so stiff, even a single spline of "clocking" will result in a dramatic change in height. Document your original bar position before removal.
• Lubrication: Thoroughly clean the female splines in the A-arms and apply a generous coat of high-pressure waterproof grease during installation to prevent seizing and "creaking" noises.
20 mm Solid (Competition Grade)
The 20 mm solid torsion bar moves further toward a performance-focused suspension setup.
It provides significantly increased resistance to front suspension movement and is suitable for cars with complementary rear spring and damper upgrades.
Spring Rate: Extreme increase over stock (Over 3x the stiffness of original 11mm bars)
Note: Available in both solid and tubular designs to fit your weight-reduction goals.
Recommended for:
• Aggressive fast-road use
• Road / track builds
• Autocross
• 914 GT-style projects
• Higher-powered engine conversions
• Performance dampers
Critical Installation & Setup Notes
• Chassis Stress: A 20mm bar is incredibly stiff. You must inspect your torsion bar mounting points for any signs of fatigue or rust. For racing applications, reinforcing the chassis at the A-arm mounts is highly recommended.
• Mandatory Rear Upgrades: Running 20mm front bars with anything near stock rear springs will result in a car that refuses to turn (extreme understeer). You must pair these with high-rate rear competition coil springs to maintain the 914's signature mid-engine agility.
• Shock Damping: Standard street shocks cannot control this spring rate. Competition-valved dampers (such as Bilstein RSR or custom-valved Koni Racing) are required to prevent the front end from becoming dangerously "bouncy."
• Indexing: Because these bars are so rigid, indexing is hyper-sensitive. A single spline of adjustment will move the car’s ride height significantly.
21 mm Solid (Extreme Competition Grade)
The 21 mm solid front torsion bar is a high-rate option intended primarily for track-focused and highly modified Porsche 914 applications.
It provides substantial resistance to body roll and braking dive and should be used as part of a properly balanced suspension package.
Spring Rate: Maximum stiffness (Approximately 4x the rate of factory 4-cylinder bars)
Note: This is an exceptionally rigid bar. It is designed as a direct-fit replacement for the factory front torsion bars but intended only for highly modified chassis.
Recommended for:
• Track-focused Porsche 914s
• Competition-inspired builds
• High-powered six-cylinder conversions
• Wide-tyre applications
• Autocross
• Competition-valved dampers
Critical Performance & Setup Notes
• Chassis Reinforcement: A 21mm bar transfers immense loads to the chassis. It is mandatory to inspect and likely reinforce the front torsion bar mounting bulkheads and A-arm pivot points to prevent metal fatigue or tearing.
• Matched Rear Springs: To prevent uncontrollable understeer, you must use very high-rate rear coil springs. This bar is generally paired with rear springs in the 250–350 lb/in range, depending on vehicle weight and tire choice.
• Damping: This spring rate requires professional-grade, custom-valved dampers. Standard performance shocks will not have sufficient rebound control, leading to a dangerous "pogo" effect on uneven surfaces.
• Ride Quality: This setup will be extremely harsh on public roads. It is optimized for smooth track surfaces and maximum lateral grip.
22 mm Solid (Extreme Competition / Heavy Conversion Grade)
The 22 mm solid front torsion bar provides a very high front spring rate for serious performance and motorsport applications.
Spring Rate: Maximum performance increase (Approximately 4.5x the rate of factory 4-cylinder bars)
Note: This bar is intended for highly modified vehicles. It provides a massive leap in front-end stiffness compared to the factory 11mm–13mm bars.
Recommended for:
• Dedicated track cars
• Motorsport builds
• High-grip tyre packages
• Lightweight competition cars
• Large-engine conversions
• Cars with suitably matched rear springs
• Competition suspension systems
Road comfort will be considerably reduced compared with the smaller sizes.
Critical Installation & Performance Notes
• Chassis Reinforcement Mandatory: A 22mm bar is rigid enough to potentially damage an unreinforced factory chassis. It is essential to reinforce the front torsion bar mounting points and A-arm bulkheads to prevent metal fatigue or structural failure.
• System Balance: You must utilize very high-rate rear coil springs (typically 300+ lb/in) to balance the vehicle's handling. Using these with standard rear springs will make the car nearly impossible to turn (severe understeer).
• Damping Requirements: Standard or even "Sport" street shocks are insufficient for this rate. Custom-valved racing dampers are required to control the rapid oscillation and prevent a dangerous "pogo" effect.
• Spline Care: Apply a generous layer of high-pressure waterproof grease to the splines during installation to prevent seizing and eliminate the "popping" noises common in high-rate torsion setups.
23 mm Solid (Extreme Competition Grade)
The 23 mm solid torsion bar is the most aggressive option in this range.
Designed for highly developed competition cars, it provides extremely high resistance to front suspension movement and should only be considered as part of a complete motorsport suspension setup.
Spring Rate: Maximum stiffness (Over 5x the rate of factory 4-cylinder bars)
Note: This is a specialized racing component. It is intended for vehicles where the factory front-end geometry must remain absolutely flat under extreme cornering loads or high aerodynamic downforce
Recommended for:
• Dedicated race cars
• Motorsport
• High-horsepower conversions
• Full competition tyre setups
• Professionally developed chassis
• Competition dampers and rear spring rates
Professional suspension setup is strongly recommended at this level of stiffness.
Critical Performance & Setup Notes
• Chassis Reinforcement MANDATORY: A 23mm bar transfers immense loads to the chassis. It is essential to reinforce the front torsion bar mounting bulkheads and A-arm pivot points. Failure to do so can result in metal fatigue or the mounting points literally tearing away from the factory sheet metal.
• Matched Rear Springs: To prevent uncontrollable understeer, you must use extremely high-rate rear coil springs. This bar is typically paired with rear springs in the 350–450 lb/in range, depending on vehicle weight and tire choice.
• Damping: This spring rate requires professional-grade, custom-valved racing dampers. Standard performance shocks will not have sufficient rebound control, which could lead to a dangerous "pogo" effect on track surfaces.
• Ride Quality: This setup is not recommended for street use. The 23mm solid bar is so rigid that it will transmit nearly all road imperfections directly into the chassis.
Why Upgrade the Front Torsion Bars?
The torsion bars act as the front springs in the Porsche 914 suspension system.
Increasing their diameter raises the spring rate and can provide:
• Reduced nose-dive under braking
• Reduced body roll
• Sharper steering response
• Improved front suspension control
• Greater stability during aggressive cornering
• Better support for high-grip tyres
More predictable behaviour during track use However, increasing front spring rate also affects the overall handling balance of the mid-engined Porsche 914.
Solid Construction
These Sway-A-Way torsion bars use solid alloy-steel construction.
Solid bars provide:
• Proven suspension technology
• High torsional strength
• Excellent durability
• Predictable spring characteristics
• Wide range of spring-rate choices
• Competitive pricing compared with hollow alternatives
• Suitability for both road and competition use
They are an excellent choice where suspension performance and durability are more important than the weight reduction offered by tubular torsion bars.
Precision Manufacturing
Sway-A-Way torsion bars are manufactured using performance-focused processes designed to produce consistent spring characteristics.
Construction includes:
• High-strength alloy steel
• Heat treatment
• Shot peening
• Precision centreless grinding
• Controlled outside diameter
• Protective powder coating
These processes help provide high fatigue resistance and consistent behaviour between the left and right bars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FS19
The product you are viewing cross references to these numbers
Product Information
High-performance Sway-A-Way solid front torsion bars for Porsche 914 suspension applications. Designed as direct replacements for the original front torsion bars, these bars provide a simple and effective way to restore or increase front suspension spring rate while retaining the Porsche 914's original torsion-bar suspension design.SET OF 2, One pair is required per vehicle.
Fits:
Porsche 914-4: 1970 through 1976
Porsche 914-6: 1970 through 1972
* Note: Always confirm the required torsion-bar diameter and vehicle suspension specification before ordering. Please confirm the front suspension and torsion-bar configuration before ordering for a Porsche 914-6.
The factory Porsche 914 front suspension uses 17.9 mm torsion bars, making the 17.9 mm Sway-A-Way option particularly appropriate where original-style spring characteristics are required. Larger 19 mm through 23 mm bars progressively increase the front spring rate for performance-oriented suspension setups.
As the front suspension moves, each torsion bar twists along its axis. Increasing the bar diameter increases its resistance to twisting, resulting in a higher spring rate.
An appropriately selected larger front torsion bar can help reduce nose-dive under braking, control body roll and provide sharper chassis response during cornering.
Manufactured using solid high-strength 4340 alloy steel, Sway-A-Way torsion bars are designed to withstand repeated torsional loading while providing consistent spring characteristics.
Choosing the Correct Torsion Bar Rate
17.9 mm Solid
The 17.9 mm solid front torsion bar is the closest choice to the original Porsche 914 front torsion-bar diameter.
It is well suited to road cars where maintaining compliant, factory-style suspension characteristics is the priority.
Spring Rate: Significant increase over stock 914/4 and 914/6 rates.
Note: This set is a direct replacement for the front factory bars. It is available in both solid and tubular designs to suit your specific build requirements.
Recommended for:
• Standard road cars
• Original-specification restorations
• Touring use
• Street-driven 914s
• Suspension refresh projects
• Cars where ride quality remains important
This is an excellent choice when replacing aged original bars without substantially increasing the front spring rate.
Installation & Performance Notes
• Balanced Handling: Because 17.9mm front bars are substantially stiffer than stock, you must ensure your rear springs (coil springs on the 914) are matched accordingly. Running these with stock rear springs may induce significant understeer.
• Indexing: The 914 front suspension uses the same spline-indexing system as the 911. Proper "clocking" is essential to achieve your desired ride height. Document the position of your original bars before removal.
• Lubrication: Always apply a high-quality waterproof grease to the splines during installation to prevent "creaking" and ensure the bars do not seize in the A-arms or adjustment caps over time.
19 mm Solid (High-Performance)
The 19 mm solid front torsion bar provides a noticeable increase in front spring rate compared with the standard 17.9 mm configuration.
It offers improved front-end control while remaining a practical choice for performance road and fast-road cars.
Spring Rate: Significant increase over stock 914-4 and 914-6 rates
Note: Engineered as a direct-fit replacement for the factory front torsion bars.
Recommended for:
• Fast-road Porsche 914s
• Performance road builds
• 914-6 conversions
• Uprated dampers
• Modern performance tyres
• Occasional track-day use
The increased stiffness can help reduce body roll and nose-dive while providing a more immediate steering response.
Installation & Performance Notes
• System Balance: Because 19mm front bars are extremely stiff for a lightweight 914, you must upgrade your rear coil springs to maintain a neutral handling balance. Failure to do so will result in significant understeer (pushing) in corners.
• Shock Damping: Standard comfort shocks will likely be insufficient for this spring rate. For the best performance, pair these with sport-valved dampers (such as Bilstein Sport or Koni) to control the increased rebound force.
• Indexing: The 914 uses a spline-indexing system to set ride height. Because the 19mm bar is so stiff, even a single spline of "clocking" will result in a dramatic change in height. Document your original bar position before removal.
• Lubrication: Thoroughly clean the female splines in the A-arms and apply a generous coat of high-pressure waterproof grease during installation to prevent seizing and "creaking" noises.
20 mm Solid (Competition Grade)
The 20 mm solid torsion bar moves further toward a performance-focused suspension setup.
It provides significantly increased resistance to front suspension movement and is suitable for cars with complementary rear spring and damper upgrades.
Spring Rate: Extreme increase over stock (Over 3x the stiffness of original 11mm bars)
Note: Available in both solid and tubular designs to fit your weight-reduction goals.
Recommended for:
• Aggressive fast-road use
• Road / track builds
• Autocross
• 914 GT-style projects
• Higher-powered engine conversions
• Performance dampers
Critical Installation & Setup Notes
• Chassis Stress: A 20mm bar is incredibly stiff. You must inspect your torsion bar mounting points for any signs of fatigue or rust. For racing applications, reinforcing the chassis at the A-arm mounts is highly recommended.
• Mandatory Rear Upgrades: Running 20mm front bars with anything near stock rear springs will result in a car that refuses to turn (extreme understeer). You must pair these with high-rate rear competition coil springs to maintain the 914's signature mid-engine agility.
• Shock Damping: Standard street shocks cannot control this spring rate. Competition-valved dampers (such as Bilstein RSR or custom-valved Koni Racing) are required to prevent the front end from becoming dangerously "bouncy."
• Indexing: Because these bars are so rigid, indexing is hyper-sensitive. A single spline of adjustment will move the car’s ride height significantly.
21 mm Solid (Extreme Competition Grade)
The 21 mm solid front torsion bar is a high-rate option intended primarily for track-focused and highly modified Porsche 914 applications.
It provides substantial resistance to body roll and braking dive and should be used as part of a properly balanced suspension package.
Spring Rate: Maximum stiffness (Approximately 4x the rate of factory 4-cylinder bars)
Note: This is an exceptionally rigid bar. It is designed as a direct-fit replacement for the factory front torsion bars but intended only for highly modified chassis.
Recommended for:
• Track-focused Porsche 914s
• Competition-inspired builds
• High-powered six-cylinder conversions
• Wide-tyre applications
• Autocross
• Competition-valved dampers
Critical Performance & Setup Notes
• Chassis Reinforcement: A 21mm bar transfers immense loads to the chassis. It is mandatory to inspect and likely reinforce the front torsion bar mounting bulkheads and A-arm pivot points to prevent metal fatigue or tearing.
• Matched Rear Springs: To prevent uncontrollable understeer, you must use very high-rate rear coil springs. This bar is generally paired with rear springs in the 250–350 lb/in range, depending on vehicle weight and tire choice.
• Damping: This spring rate requires professional-grade, custom-valved dampers. Standard performance shocks will not have sufficient rebound control, leading to a dangerous "pogo" effect on uneven surfaces.
• Ride Quality: This setup will be extremely harsh on public roads. It is optimized for smooth track surfaces and maximum lateral grip.
22 mm Solid (Extreme Competition / Heavy Conversion Grade)
The 22 mm solid front torsion bar provides a very high front spring rate for serious performance and motorsport applications.
Spring Rate: Maximum performance increase (Approximately 4.5x the rate of factory 4-cylinder bars)
Note: This bar is intended for highly modified vehicles. It provides a massive leap in front-end stiffness compared to the factory 11mm–13mm bars.
Recommended for:
• Dedicated track cars
• Motorsport builds
• High-grip tyre packages
• Lightweight competition cars
• Large-engine conversions
• Cars with suitably matched rear springs
• Competition suspension systems
Road comfort will be considerably reduced compared with the smaller sizes.
Critical Installation & Performance Notes
• Chassis Reinforcement Mandatory: A 22mm bar is rigid enough to potentially damage an unreinforced factory chassis. It is essential to reinforce the front torsion bar mounting points and A-arm bulkheads to prevent metal fatigue or structural failure.
• System Balance: You must utilize very high-rate rear coil springs (typically 300+ lb/in) to balance the vehicle's handling. Using these with standard rear springs will make the car nearly impossible to turn (severe understeer).
• Damping Requirements: Standard or even "Sport" street shocks are insufficient for this rate. Custom-valved racing dampers are required to control the rapid oscillation and prevent a dangerous "pogo" effect.
• Spline Care: Apply a generous layer of high-pressure waterproof grease to the splines during installation to prevent seizing and eliminate the "popping" noises common in high-rate torsion setups.
23 mm Solid (Extreme Competition Grade)
The 23 mm solid torsion bar is the most aggressive option in this range.
Designed for highly developed competition cars, it provides extremely high resistance to front suspension movement and should only be considered as part of a complete motorsport suspension setup.
Spring Rate: Maximum stiffness (Over 5x the rate of factory 4-cylinder bars)
Note: This is a specialized racing component. It is intended for vehicles where the factory front-end geometry must remain absolutely flat under extreme cornering loads or high aerodynamic downforce
Recommended for:
• Dedicated race cars
• Motorsport
• High-horsepower conversions
• Full competition tyre setups
• Professionally developed chassis
• Competition dampers and rear spring rates
Professional suspension setup is strongly recommended at this level of stiffness.
Critical Performance & Setup Notes
• Chassis Reinforcement MANDATORY: A 23mm bar transfers immense loads to the chassis. It is essential to reinforce the front torsion bar mounting bulkheads and A-arm pivot points. Failure to do so can result in metal fatigue or the mounting points literally tearing away from the factory sheet metal.
• Matched Rear Springs: To prevent uncontrollable understeer, you must use extremely high-rate rear coil springs. This bar is typically paired with rear springs in the 350–450 lb/in range, depending on vehicle weight and tire choice.
• Damping: This spring rate requires professional-grade, custom-valved racing dampers. Standard performance shocks will not have sufficient rebound control, which could lead to a dangerous "pogo" effect on track surfaces.
• Ride Quality: This setup is not recommended for street use. The 23mm solid bar is so rigid that it will transmit nearly all road imperfections directly into the chassis.
Why Upgrade the Front Torsion Bars?
The torsion bars act as the front springs in the Porsche 914 suspension system.
Increasing their diameter raises the spring rate and can provide:
• Reduced nose-dive under braking
• Reduced body roll
• Sharper steering response
• Improved front suspension control
• Greater stability during aggressive cornering
• Better support for high-grip tyres
More predictable behaviour during track use However, increasing front spring rate also affects the overall handling balance of the mid-engined Porsche 914.
Solid Construction
These Sway-A-Way torsion bars use solid alloy-steel construction.
Solid bars provide:
• Proven suspension technology
• High torsional strength
• Excellent durability
• Predictable spring characteristics
• Wide range of spring-rate choices
• Competitive pricing compared with hollow alternatives
• Suitability for both road and competition use
They are an excellent choice where suspension performance and durability are more important than the weight reduction offered by tubular torsion bars.
Precision Manufacturing
Sway-A-Way torsion bars are manufactured using performance-focused processes designed to produce consistent spring characteristics.
Construction includes:
• High-strength alloy steel
• Heat treatment
• Shot peening
• Precision centreless grinding
• Controlled outside diameter
• Protective powder coating
These processes help provide high fatigue resistance and consistent behaviour between the left and right bars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FS19
91434310100
91434310200
90134310112
90134310212
90134310114
90134310214
91434310700
91434310800
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 914 (1970-1976)
Please select the size
Prices from: £367.10
Shop Securely
12 Month Warranty
Worldwide Delivery
FS19
Product Information
SET OF 2, One pair is required per vehicle.
Fits:
Porsche 914-4: 1970 through 1976
Porsche 914-6: 1970 through 1972
* Note: Always confirm the existing front suspension and torsion-bar specification before ordering, particularly on cars that have previously been converted to 911-type front suspension components.
The tubular construction is engineered to provide the spring characteristics associated with the stated solid torsion-bar rate while removing unnecessary material from the centre of the bar.
This reduces weight without giving up the intended suspension rate, making the tubular range particularly attractive for lightweight road cars, track-day builds and competition Porsche 914s.
As the front suspension moves, the torsion bar twists along its axis. Increasing the torsion-bar rate increases resistance to this twisting movement, helping control front suspension compression, braking dive and body roll.
The result is a more responsive front end and greater suspension control when the torsion bars are correctly matched with the rest of the chassis setup.
Choosing the Correct Torsion Bar Rate
20 mm Tubular (Competition Grade)
The 20 mm tubular front torsion bar is the mildest option in this particular hollow performance range. It provides a substantial performance-oriented front spring rate while retaining the weight advantage of tubular construction.
Spring Rate: Extreme increase over stock (Over 3x the stiffness of original 11mm bars)
Note: Designed to provide the same effective spring rate as a 20mm solid bar but with a significant weight advantage.
Recommended for:
• Performance road cars
• Fast-road Porsche 914 builds
• Occasional track days
• Autocross
• Six-cylinder conversions
• Cars using uprated dampers and rear springs
Critical Installation & Setup Notes
• Mandatory Rear Upgrades: Running 20mm front bars with stock rear springs will result in extreme understeer. To maintain the 914's signature mid-engine agility, you must pair these with high-rate rear competition coil springs.
• Shock Damping: Standard street shocks cannot control this spring rate. Competition-valved dampers (such as Bilstein RSR or custom-valved Koni Racing) are required to prevent the front end from becoming dangerously "bouncy."
• Chassis Stress: A 20mm bar is incredibly rigid. Inspect your torsion bar mounting points and A-arm brackets for any signs of fatigue or rust. Reinforcing these areas is highly recommended for racing applications.
• Indexing: Because these bars are so stiff, ride height adjustment is hyper-sensitive. A single spline of "clocking" adjustment will move the car’s height significantly.
21 mm Tubular (Tubular construction for weight savings)
Enhance your Porsche 914’s suspension with this 21mm tubular torsion bar set, designed for improved handling and reduced weight. A direct replacement for stock bars, these provide consistent performance and durability.
Recommended for:
• Track-focused Porsche 914s
• 914 GT-style builds
• High-performance engine conversions
• Autocross
• Wide-tyre applications
• Performance-valved dampers
22 mm Tubular (Tubular construction for weight reduction)
The 22 mm tubular front torsion bar is a high-rate performance option aimed principally at serious track and competition use.
Upgrade your Porsche 914’s suspension with this 22mm tubular torsion bar set, designed for enhanced handling and weight savings. A direct replacement for stock bars, these offer reliable performance while reducing unsprung weight.
Recommended for:
• Dedicated track cars
• Motorsport-inspired builds
• High-grip tyres
• Lightweight race cars
• High-output engine conversions
• Competition dampers
• Appropriately uprated rear spring rates
23 mm Tubular (Extreme Competition Grade)
The ultimate "weight-optimized" front suspension solution for competition-level Porsche 914s. These 23mm tubular torsion bars provide the maximum spring rate available for the 914 chassis while utilizing a hollow core to significantly reduce unsprung weight. Engineered for high-horsepower conversions (V8 or 3.6L swaps) and dedicated GT-class racing, these bars deliver extreme roll resistance and front-end stability without the heavy mass of a solid 23mm bar.
Spring Rate: Maximum performance increase (Over 5x the stiffness of original factory bars)
Note: The "T" designation indicates a tubular design. This bar provides the exact same spring rate as a 23mm solid bar but with superior suspension recovery speeds due to the lower weight.
Recommended for:
• Dedicated race cars
• Motorsport applications
• GT-style competition builds
• High-horsepower conversions
• Racing slicks or very high-grip tyres
• Competition-valved dampers
• Fully developed suspension packages
Why Upgrade the Front Torsion Bars?
The torsion bars act as the front springs in the Porsche 914 suspension.
Increasing their effective rate can provide:
• Reduced nose-dive under braking
• Reduced body roll
• Sharper steering response
• Improved suspension control
• More consistent chassis behaviour under load
• Better support for modern performance tyres
• Improved track performance
The higher the torsion-bar rate, the more important it becomes to ensure that the rest of the suspension is correctly matched.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FS19
The product you are viewing cross references to these numbers
Product Information
High-performance Sway-A-Way tubular front torsion bars for the Porsche 914.
Designed as a lightweight alternative to equivalent solid torsion bars, these hollow bars provide increased front suspension control while retaining the original torsion-bar suspension architecture. Available from 20 mm through to 23 mm.SET OF 2, One pair is required per vehicle.
Fits:
Porsche 914-4: 1970 through 1976
Porsche 914-6: 1970 through 1972
* Note: Always confirm the existing front suspension and torsion-bar specification before ordering, particularly on cars that have previously been converted to 911-type front suspension components.
The tubular construction is engineered to provide the spring characteristics associated with the stated solid torsion-bar rate while removing unnecessary material from the centre of the bar.
This reduces weight without giving up the intended suspension rate, making the tubular range particularly attractive for lightweight road cars, track-day builds and competition Porsche 914s.
As the front suspension moves, the torsion bar twists along its axis. Increasing the torsion-bar rate increases resistance to this twisting movement, helping control front suspension compression, braking dive and body roll.
The result is a more responsive front end and greater suspension control when the torsion bars are correctly matched with the rest of the chassis setup.
Choosing the Correct Torsion Bar Rate
20 mm Tubular (Competition Grade)
The 20 mm tubular front torsion bar is the mildest option in this particular hollow performance range. It provides a substantial performance-oriented front spring rate while retaining the weight advantage of tubular construction.
Spring Rate: Extreme increase over stock (Over 3x the stiffness of original 11mm bars)
Note: Designed to provide the same effective spring rate as a 20mm solid bar but with a significant weight advantage.
Recommended for:
• Performance road cars
• Fast-road Porsche 914 builds
• Occasional track days
• Autocross
• Six-cylinder conversions
• Cars using uprated dampers and rear springs
Critical Installation & Setup Notes
• Mandatory Rear Upgrades: Running 20mm front bars with stock rear springs will result in extreme understeer. To maintain the 914's signature mid-engine agility, you must pair these with high-rate rear competition coil springs.
• Shock Damping: Standard street shocks cannot control this spring rate. Competition-valved dampers (such as Bilstein RSR or custom-valved Koni Racing) are required to prevent the front end from becoming dangerously "bouncy."
• Chassis Stress: A 20mm bar is incredibly rigid. Inspect your torsion bar mounting points and A-arm brackets for any signs of fatigue or rust. Reinforcing these areas is highly recommended for racing applications.
• Indexing: Because these bars are so stiff, ride height adjustment is hyper-sensitive. A single spline of "clocking" adjustment will move the car’s height significantly.
21 mm Tubular (Tubular construction for weight savings)
Enhance your Porsche 914’s suspension with this 21mm tubular torsion bar set, designed for improved handling and reduced weight. A direct replacement for stock bars, these provide consistent performance and durability.
Recommended for:
• Track-focused Porsche 914s
• 914 GT-style builds
• High-performance engine conversions
• Autocross
• Wide-tyre applications
• Performance-valved dampers
22 mm Tubular (Tubular construction for weight reduction)
The 22 mm tubular front torsion bar is a high-rate performance option aimed principally at serious track and competition use.
Upgrade your Porsche 914’s suspension with this 22mm tubular torsion bar set, designed for enhanced handling and weight savings. A direct replacement for stock bars, these offer reliable performance while reducing unsprung weight.
Recommended for:
• Dedicated track cars
• Motorsport-inspired builds
• High-grip tyres
• Lightweight race cars
• High-output engine conversions
• Competition dampers
• Appropriately uprated rear spring rates
23 mm Tubular (Extreme Competition Grade)
The ultimate "weight-optimized" front suspension solution for competition-level Porsche 914s. These 23mm tubular torsion bars provide the maximum spring rate available for the 914 chassis while utilizing a hollow core to significantly reduce unsprung weight. Engineered for high-horsepower conversions (V8 or 3.6L swaps) and dedicated GT-class racing, these bars deliver extreme roll resistance and front-end stability without the heavy mass of a solid 23mm bar.
Spring Rate: Maximum performance increase (Over 5x the stiffness of original factory bars)
Note: The "T" designation indicates a tubular design. This bar provides the exact same spring rate as a 23mm solid bar but with superior suspension recovery speeds due to the lower weight.
Recommended for:
• Dedicated race cars
• Motorsport applications
• GT-style competition builds
• High-horsepower conversions
• Racing slicks or very high-grip tyres
• Competition-valved dampers
• Fully developed suspension packages
Why Upgrade the Front Torsion Bars?
The torsion bars act as the front springs in the Porsche 914 suspension.
Increasing their effective rate can provide:
• Reduced nose-dive under braking
• Reduced body roll
• Sharper steering response
• Improved suspension control
• More consistent chassis behaviour under load
• Better support for modern performance tyres
• Improved track performance
The higher the torsion-bar rate, the more important it becomes to ensure that the rest of the suspension is correctly matched.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FS19
91434310100
91434310200
90134310112
90134310212
90134310114
90134310214
91434310700
91434310800
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 914 (1970-1976)
Please select the size
Prices from: £428.40
Shop Securely
12 Month Warranty
Worldwide Delivery
Call us
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