Torsion Bar

Foam seal front torsion bar adjuster. 



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

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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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Chrome Moly Light Weight Hollow Front Torsion Bar (SET OF 2)
- 21mm
- 22mm

Tighten up your suspension with these high precision, light weight, hollow torsion bars.

Fabricated from aircraft quality 4130 chrome moly steel, and heat treated for high strength and reliability.

Zinc plated with plugged ends for superior corrosion resistance.

Precision machined splined ends for a perfect fit.

Center less ground and gun drilled for a consistent spring rate.

Lighter weight compared to solid bars with an equivalent stiffness. Up to 3 lbs lighter per bar!

These are the highest quality bars on the market.

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1S166911F

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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.

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1S166911TR

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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:
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).

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21021

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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

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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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