Torsion Bar
Fits:
Porsche 911/911 S 1965-67
Porsche 911 S/TU/L 1968
Porsche 911 T/E/S 1969
Porsche 912 1965-69
Porsche 911 S / Carrera 2.7 / 911 T/E 1970-73
Porsche 914 1970-76
Diagram ref no 29
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134371301
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)
Fits:
Porsche 911/911 S 1965-67
Porsche 911 S/TU/L 1968
Porsche 911 T/E/S 1969
Porsche 912 1965-69
Porsche 911 S / Carrera 2.7 / 911 T/E 1970-73
Porsche 914 1970-76
Diagram ref no 29
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134371301
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)
- 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Related, superseded, cross reference or alternative numbers for comparison.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 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)
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).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
209202
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)
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).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
21021
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)
- Porsche 914 (1970-1976)
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).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
21020
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)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
Grommet for stabiliser bar, front, Ø13mm
(need 2 per car).

Fits:
Porsche 911/912 1965-67
Porsche 911/912 1968 USA
Click 'Zoom in' to display fitment diagram - Ref No 36
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134379201
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
Grommet for stabiliser bar, front, Ø13mm
(need 2 per car).

Fits:
Porsche 911/912 1965-67
Porsche 911/912 1968 USA
Click 'Zoom in' to display fitment diagram.
Diagram ref no 36
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134379201
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)
Sold each, (need 2 per car).
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
Diagram ref no 23
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134379202
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)
Sold individually (two are required, one for each side).
OE Match replacement — engineered to the same specifications as the original Porsche part. This rubber mount (or bushing) supports the front torsion (stabiliser) bar by clamping around it and anchoring it to the chassis.
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
Diagram Ref No 23
Torsion bar rubber mount isolates the torsion bar from direct metal-to-metal contact, reducing vibration, noise, and wear. The mount allows controlled movement of the bar while ensuring the suspension geometry and roll control forces are correctly applied. It helps maintain proper chassis stiffness and ensures smooth, consistent handling.
Why replacement matters:
• Over time, the rubber in the mount degrades due to heat, age, compression, and dynamic loads. Cracks, flattening, or deterioration of material is common in older cars.
• A worn mount allows excessive play, leading to clunks, squeaks, imperfect roll control, or erratic handling.
• It can transmit unwanted vibration into the chassis or cabin when the torsion bar flexes under loads.
Replacing with a high-quality OE-Match part restores the original precision, reducing noise and restoring proper suspension behaviour.
• Because these mounts support the torsion bar’s leverage on the chassis, a failure or poorly fitting mount can compromise handling stability.
Be sure to confirm the bar diameter to match the correct mount size.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90134379202
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)
Porsche Torsion Bars | Design911 Suspension Components for Ride Height, Balance & Handling Precision
Torsion bars are an integral part of Porsche’s classic suspension design, providing spring resistance that supports the vehicle’s weight and absorbs road irregularities. Acting as the main spring element, they twist under load to control suspension movement and maintain ride height. Properly functioning torsion bars ensure balanced handling, consistent alignment, and the smooth, composed driving feel that defines Porsche engineering.
At Design911, we offer a wide range of torsion bars for both front and rear suspension setups. Each component is precision-engineered from high-tensile spring steel or performance-grade materials to provide durability, accuracy, and consistent performance. Whether for restoration, suspension servicing, or performance tuning, our torsion bars help restore and enhance your Porsche’s suspension dynamics.
What Do Torsion Bars Do?
Torsion bars act as load-bearing springs within the suspension system. When the wheels move up and down, the bars twist along their axis to absorb impact and maintain control.
Core Functions:
• Provide spring resistance to support vehicle weight.
• Maintain correct ride height and chassis balance.
• Control suspension compression and rebound during driving.
• Distribute load evenly for predictable handling.
• Enable fine-tuning of suspension stiffness and ride comfort.
With well-calibrated torsion bars, your Porsche delivers improved grip, stability, and cornering precision — both on the road and track.
Why Do Torsion Bars Fail or Degrade?
Over time, torsion bars endure extreme twisting forces, environmental exposure, and wear, which can reduce their effectiveness and strength.
Common Causes of Failure Include:
• Metal fatigue from repeated flexing and torsional stress.
• Corrosion or pitting weakening the bar’s surface.
• Cracks developing from overloading or impact.
• Incorrect ride height adjustments causing uneven stress.
• Aging bushings and mounts reducing alignment accuracy.
When torsion bars wear or crack, symptoms include uneven ride height, unstable handling, and unpredictable suspension response — all clear signs replacement is required.
Why Replace or Upgrade Your Porsche Torsion Bars?
Replacing tired or damaged torsion bars restores suspension strength, ride height accuracy, and overall handling precision. Performance torsion bars can also improve chassis stiffness for track use or spirited driving.
Key Benefits:
• Restores proper suspension balance and ride height.
• Improves cornering stability and handling predictability.
• Reduces body roll and uneven weight distribution.
• Available in standard and performance-rated diameters.
• Fits Porsche 911, 912, 914, 924, 944, and classic models.
• Perfect for restorations, tuning, or performance upgrades.
Design911’s Porsche torsion bars combine superior material quality with exact fitment — ensuring your suspension remains stable, balanced, and ready for precision driving.
Highlights
• Premium Porsche torsion bars and suspension components.
• Precision-machined from high-tensile spring steel.
• Restores suspension stiffness, balance, and ride height.
• Available in road, sport, or track specifications.
• Compatible with classic and performance Porsche models.
• Ideal for restoration, maintenance, or suspension tuning.