Torsion Bar

Foam seal front torsion bar adjuster. 



Fits:
Porsche 911 - 1965 to 1989
Porsche 911 turbo - 1975 to 1989

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

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90134147500

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Foam seal front torsion bar adjuster. 
Sold each - 2 required per car

Fits:
Porsche 911 - 1965 to 1989
Porsche 911 turbo - 1975 to 1989

Diagram ref no 21

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90134147500

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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




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FT18

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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).

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209202

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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).

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21020

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Rear torsion bar cover with gasket, bracket and nut. 

Sold individually; x2 required per vehicle. 

Fits:
Porsche 911 1965-86
Porsche 911 (930) Turbo 1975-86

Porsche 912 1966-69
Porsche 912E 1976

Diagram ref. 33.

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90150407900

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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.

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FS18

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Spring plate covers normally rust, replacing them will give you a better ride.

Fits:
Porsche 911 1965-89
Porsche 930 1975-77

Diagram Ref No. 29

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90133315300

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Spring plate covers normally rust, replacing them will give you a better ride.

Fits:
Porsche 911 1965-89
Porsche 930 1975-77

Diagram Ref No. 29

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90133315300

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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

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90134310

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Torsion bar clamp, LEFT.

Fits:
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-89

Diagram ref no 16

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91134103702

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Torsion bar clamp, LEFT.

Fits:
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-89

Diagram ref no 16

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91134103702

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Torsion bar protective clamp.

Fits:
Porsche 911 1965-73 Left or Right Side
Porsche 911 1974>> Right Side only
Porsche 911 (930) Turbo 1975-89 Right Side only

Diagram ref no 16

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90134115900

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Torsion Bar Protective Clamp 
Sold each

Maintain the integrity of your classic Porsche suspension with this OE Match Torsion Bar Protective Clamp. Manufactured to the original factory specification, this is designed to securely retain and protect the torsion bar assembly, ensuring reliable operation and long-term durability.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)  Left or Right Side
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)  Left or Right Side
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera  Right Side only
• Porsche 911 1978-1983 3.0L / SC  Right Side only
• Porsche 911 1984-1986 3.2L  Right Side only
• Porsche 911 1987-1989 3.2L G50  Right Side only
• Porsche 911 1975-1977 3.0L Turbo (930)  Right Side only
• Porsche 911 1978-1989 3.3L Turbo (930)  Right Side only

Diagram ref no 16

Although small, the torsion bar protective clamp is an important suspension component that helps keep the torsion bar correctly positioned while protecting surrounding components from movement and damage. Whether you're carrying out a complete suspension rebuild or replacing corroded original hardware, this OE Match replacement delivers factory-style fit and dependable performance.

What Does the Torsion Bar Protective Clamp Do?

The torsion bar protective clamp forms part of the rear suspension assembly.

Its primary functions include:

• Securing and protecting the torsion bar assembly.
• Helping retain the torsion bar in its correct position.
• Supporting correct alignment of suspension components.
• Reducing unwanted movement within the suspension assembly.
• Protecting adjacent components from wear caused by vibration.
• Contributing to the long-term reliability of the torsion bar system.

Using the correct clamp helps ensure the suspension functions as Porsche originally intended.

Why Does the Torsion Bar Protective Clamp Need Replacing?

After decades beneath the vehicle, the original clamp is exposed to harsh environmental conditions.

Common causes of deterioration include:

• Corrosion from road salt and moisture.
• Surface rust weakening the metal.
• Damage during suspension disassembly.
• Distortion caused by previous removal.
• Fatigue from years of vibration and road use.
• General ageing of original hardware.

A damaged or corroded clamp may no longer provide the correct support for the torsion bar assembly during suspension servicing or restoration.

When Should It Be Replaced?

Replacement is recommended when:

• Carrying out a torsion bar replacement.
• Rebuilding the rear suspension.
• The original clamp is corroded or damaged.
• Suspension components have been removed for servicing.
• Restoring the vehicle to factory specification.
• Completing a concours-quality restoration.
• Replacing worn or ageing suspension hardware.

Replacing original suspension hardware during a rebuild helps ensure reliable fitment and long-term durability.

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90134115900

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Torsion bar,  26 mm.



Fits:
Porsche 911 Turbo 1975-88

Click 'Zoom in' for large parts diagram.
Diagram ref no 28

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