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- 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)
Sold as a pair
OEM Part Number: 90134379202
Fits:
Porsche 911S 1965-67
Porsche 911S 1968 USA
Porsche 911S 1969
Porsche 911S / Carrera 2.7L / 911T/E / 911T-K 1970-73
Porsche 914 1970-76
Note: Please check bar diameter before ordering.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 4.
Powerflex Black Series - Designed for the Track - Ready to Race - Engineered to be the best.
Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry. This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than our purple performance material.
If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.
Replacing your car rubber suspension bushes with Polyurethane Suspension Bushes will give you:
- Better road holding
- Constant steering geometry
- Increased tyre life
- More responsive steering
- Longer service life of suspension components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PFF57-1403-13BLK
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)
- Porsche 914 (1970-1976)
- 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1S166911F
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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 65-86 Rear
Available in 7 sizes:
- 25mm
- 26mm
- 27mm
- 28mm
- 29mm
- 31mm
- 33mm
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.
Centre 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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1S166911R
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