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Torsion Bars
By OE Match
- 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
OEMatch Torsion Bars — Fit, Function, Confidence
OEMatch torsion bars for Porsche models support the suspension in controlling ride height and load while helping to maintain chassis balance. They sit at the core of many classic Porsche suspension layouts, making correct specification important when refreshing or tuning the vehicle.
- Torsion bars for Porsche suspension refurbishment and tuning
- Options to support different road and track applications
- Components made to original-spec dimensions for consistent performance
Understanding OEMatch Torsion Bars
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original torsion bars. OE (Original Equipment) refers to parts matching original specifications for the torsion bars and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM torsion bars engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. On many Porsche vehicles the torsion bar functions as the main spring element, twisting along its length to support the weight of the car. Diameter, length and spline configuration are critical to how it fits the suspension carrier and how it influences wheel rate. OEMatch torsion bars are made to original-spec dimensions for consistent performance and are engineered to match the original form, fit and function, so they fit original mounting points and clearances and remain compatible with factory systems and sensors where used. Many owners search for genuine or OEM torsion bars; these are direct-fit alternatives designed to match the original form, fit and function.
Benefits Include
- Supports correct ride height adjustment within the suspension’s factory range
- Helps restore predictable handling when refreshing a tired suspension
- Made to original-spec dimensions for consistent performance across the axle
- Can complement other chassis upgrades such as dampers and bushes
- Helps maintain stability when the car is loaded or driven enthusiastically
Why Torsion Bars Wear and Fail
- Corrosion over time, especially on exposed sections of the bar or splines
- Metal fatigue from repeated high load cycles on older Porsche vehicles
- Improper adjustment or over-lowering, placing excess stress on the bar
- Contamination from road debris and moisture where protective coatings are damaged
- Previous impact damage or incorrect handling during suspension work
The Importance of Replacing with OEMatch Torsion Bars
On Porsche models that use torsion bars, their condition has a direct influence on vehicle stance, corner balance and how the suspension responds to bumps and steering input. Replacing worn or damaged items with torsion bars made to original-spec dimensions for consistent performance helps the chassis operate as intended and supports even load sharing side to side. OEMatch torsion bars are compatible with factory systems and sensors where used and are designed as direct-fit replacements engineered to match original dimensions and tolerances, so they integrate with existing suspension hardware without the need for modification.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Fits original mounting points and clearances within the suspension assembly
- Compatible with factory systems and sensors where fitted
- Suitable for both routine refurbishment and performance-oriented projects
- Supported by OEMatch focus on Porsche components and applications
Support & Advice
Fitting can appear straightforward but may require specific procedures such as torque settings, alignment, balancing or recalibration. If you lack the correct tools or experience, we recommend professional installation. Recheck fasteners after initial mileage.