Torsion Bars

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

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QuickChange™ Torsion Bars, FRONT
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

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QuickChange™ Torsion Bars, REAR
Sold per kit, 1 kit req'd per car.



Fits:
for G50 Transmission
Porsche 911 / 930 1987-89

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.

21021

The product you are viewing cross references to these numbers

QuickChange™ Torsion Bars, REAR
Sold per kit, 1 kit req'd per car.



Fits:
Porsche 911/912/930/914 '65-'86
Porsche 356 A/B '48-'65 (Pre-A, C and CS Read Notes),
Porsche 944/968/924 '76-'95 w/ QuickChange Spring Plates

PLEASE NOTE: sizes 34mm and 36mm are not applicable for 944, 968 and 924 models)

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.

21020

The product you are viewing cross references to these numbers

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

The product you are viewing cross references to these numbers