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- 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)
Sold each - 2 required per car
Fits:
Porsche 911 - 1965 to 1989
Porsche 911 turbo - 1975 to 1989
Diagram ref no 21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134147500
The product you are viewing cross references to these numbers
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Lightweight Hollow Rear Torsion Bar – Porsche 911 G50
Transform the handling of your Porsche 911 G50 with these OE
Match Lightweight Hollow Rear Torsion Bars. Engineered for enthusiasts who
demand sharper handling, improved chassis balance and reduced weight, these
premium torsion bars are manufactured from aircraft-grade 4130 chrome
molybdenum steel and precision heat treated to deliver exceptional
strength, durability and consistent spring rates.
Fits:
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Designed as a direct replacement for the factory rear torsion bars, these lightweight hollow bars provide the same or greater stiffness as comparable solid bars while reducing unsprung weight by up to 3lbs (1.36 kg) per bar. The result is a more responsive suspension, improved traction and greater driver confidence whether you're driving on the road, fast road or circuit.
Available in different diameters, these torsion bars allow you to tailor your Porsche's suspension to suit your driving style and performance goals.
Available Sizes
Choose the torsion bar diameter best suited to your
suspension setup:
- 27mm
- 28mm
- 29mm
- 30mm
- 31mm
- 32mm
Larger diameters increase rear spring rates, improving body control and reducing chassis roll during aggressive driving.
What Do Rear Torsion Bars Do?
Rear torsion bars are the primary springing component of the classic Porsche 911 rear suspension.
They are responsible for:
- Supporting the weight of the rear of the vehicle.
- Controlling suspension movement.
- Maintaining correct ride height.
- Reducing body roll through corners.
- Improving traction and chassis stability.
- Working alongside the dampers to control suspension movement.
- Delivering the balance and handling characteristics the Porsche 911 is renowned for.
Selecting the correct torsion bar size allows the suspension to be tuned for road, fast road or motorsport applications.
Why Upgrade to Lightweight Hollow Torsion Bars?
These OE Match hollow torsion bars offer significant advantages over standard solid bars.
Benefits include:
- Up to 3 lbs (1.36 kg) lighter per bar than equivalent solid torsion bars.
- Reduced unsprung and rotational mass.
- Faster suspension response over uneven road surfaces.
- Improved steering feel and chassis balance.
- Increased cornering stability.
- More consistent suspension performance under high loads.
- Superior fatigue resistance for long service life.
The reduction in suspension weight allows the dampers to control wheel movement more effectively, resulting in greater grip and improved ride quality.
Premium Engineering & Construction
Manufactured using premium materials and precision machining techniques, these are among the highest-quality torsion bars available.
Features include:
- Manufactured from aircraft-quality 4130 chrome molybdenum steel.
- Heat treated for maximum strength and long-term reliability.
- Hollow gun-drilled construction for reduced weight without sacrificing stiffness.
- Centreless ground to ensure consistent diameter and spring rate.
- Precision-machined splined ends for an accurate OE-style fit.
- Zinc-plated finish with plugged ends for outstanding corrosion resistance.
- Precision engineered for consistent performance and durability.
Every component is manufactured to exacting tolerances to ensure exceptional quality and repeatable suspension performance.
When Should Rear Torsion Bars Be Upgraded?
Upgrading is recommended when:
- Improving the handling of your Porsche 911.
- Installing performance dampers.
- Lowering the vehicle.
- Rebuilding the rear suspension.
- Building a fast road or track-focused car.
- Replacing tired or corroded factory torsion bars.
- Increasing grip through wider tyres or suspension upgrades.
- Fine-tuning chassis balance for motorsport applications.
Replacing torsion bars during a suspension rebuild ensures all major wear components are renewed at the same time.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1S166911TR
The product you are viewing cross references to these numbers
- 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)
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134115900
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)
Front Axle Anti Roll Bar Lever
Sold each - 2 required per car
Restore the handling and suspension performance of your
classic Porsche with this OE Match Front Axle Anti Roll Bar Lever. This precision-manufactured suspension component
delivers the correct fit, strength and geometry required for reliable anti-roll
bar operation.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)
Diagram ref no 29
The anti roll bar lever forms a vital part of the front suspension system, transferring movement between the suspension and anti-roll bar to help minimise body roll during cornering. Replacing worn or damaged levers helps restore predictable handling, steering precision and suspension performance.
Ideal for suspension rebuilds, chassis restoration or routine maintenance, this OE Match component provides dependable quality and long service life.
What Does the Front Axle Anti Roll Bar Lever Do?
The anti roll bar lever connects the front suspension to the anti-roll bar system.
Its primary functions include:
- Transferring suspension movement to the anti-roll bar.
- Reducing body roll during cornering.
- Improving vehicle stability.
- Helping maintain balanced handling characteristics.
- Supporting more consistent tyre contact with the road surface.
- Working with the anti-roll bar to improve steering response.
A correctly functioning anti roll bar lever contributes to the precise handling characteristics for which classic Porsche models are renowned.
Why Does the Anti Roll Bar Lever Wear Out?
Over many years of use, suspension components are subjected to continual stress, vibration and environmental exposure.
Common causes of wear include:
- Corrosion from water and road salt.
- Fatigue caused by repeated suspension movement.
- Impact damage from road debris.
- Wear around mounting points.
- Distortion following suspension damage.
- General ageing after decades of service.
A worn or damaged lever can affect suspension geometry, reduce handling precision and place additional stress on surrounding suspension components.
When Should It Be Replaced?
Replacement is recommended when:
- The suspension is being rebuilt.
- The lever is bent, cracked or corroded.
- Excessive wear is visible around mounting points.
- The anti-roll bar system has excessive movement.
- Restoring the vehicle to factory specification.
- Replacing anti-roll bar bushes or related suspension components.
- Completing a concours-quality restoration.
Replacing suspension components together helps maintain correct suspension geometry and restores the handling performance of your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134371301
The product you are viewing cross references to these numbers