rubber ring Genuine Porsche part 90133319500

Powerflex PFR57-411 Replacement Spring Plate Bush.
SET OF 4
Fits:
Porsche 911 1965-67
Fits to No. 16 on the diagram.
Powerflex. 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Related, superseded, cross reference or alternative numbers for comparison.

PFR57-411

The product you are viewing cross references to these numbers

Rear spring plate rubber bush.
Fits:
Porsche 911 1965-67
Diagram Ref No. 26

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90133319500

The product you are viewing cross references to these numbers

Rear trailing arm to spring plate eccentric bolt -  M12 x 1,5
Price is each.
Fits:
Porsche 911 1974-89
Porsche 911 (930) Turbo 1975-89
Diagram ref no 25

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90133313306

The product you are viewing cross references to these numbers

High-performance Sway-A-Way tubular rear torsion bars for the Porsche 911 1965-86, designed as a direct replacement and performance upgrade for the original rear torsion bars. Available in seven different diameters from 25 mm through 31 mm, these bars allow the rear suspension spring rate to be tailored to suit anything from a fast-road classic Porsche through to a dedicated track or competition car.
SET OF 2, One pair is required per vehicle.
Fits:
Porsche 911 / 912: 1965 through 1986 
 * Rear axle application using the 24 11/16-inch short torsion-bar configuration
 * These bars Does not fit 1987–1989 Porsche 911 models. The G50-equipped cars require longer torsion bars and have a different spline configuration.
The tubular construction provides the spring characteristics of the corresponding solid torsion-bar size while reducing unnecessary weight. Sway-A-Way specifically engineers the hollow section so the tubular version maintains the intended spring rate rather than simply producing a softer hollow bar.
Compared with an equivalent solid set, Sway-A-Way states that the tubular construction saves approximately 5 lb per pair, making these bars particularly attractive for performance-focused Porsche builds where suspension weight reduction is desirable.
Available Torsion Bar Sizes

  25 mm (Performance/Weight Reduction Upgrade)
The 25 mm tubular bar is the mildest option in this range and is well suited to performance road cars where increased rear support is desired without moving immediately to a very aggressive track-oriented spring rate.
Suitable for:
 •  Road-focused Porsche 911s
 •  Mild suspension upgrades
 •  Touring and fast-road use
 •  Cars retaining relatively compliant front suspension settings
Critical Fitment Exceptions:
Solid vs. Tubular Tuning: While a 25mm tubular bar is designed to mimic the rate of a 25mm solid bar, the reduced mass alters the suspension's harmonic frequency. It is highly recommended to pair these with high-quality, adjustable dampers to take full advantage of the weight savings.
 26 mm (Competition/Weight Reduction Upgrade)
The 26 mm tubular bar provides a noticeable increase in rear suspension stiffness and is a popular step for performance-oriented road cars.
Suitable for:
 •   Fast-road builds
 •   Uprated dampers
 •   Modern performance tyres
 •   Occasional track use Higher-powered road cars
Critical Fitment Exceptions:
Unsprung Mass Advantage: While the spring rate is identical to a solid 26mm bar, the reduced mass of the tubular design improves tire contact over ripples and bumps. To maximize this benefit, use high-quality adjustable shocks with appropriate rebound damping.
 27 mm  (Extreme Performance / Weight Reduction)

The 27 mm tubular bar moves further toward a dedicated performance suspension setup. It provides increased resistance to rear suspension compression, helping control squat during acceleration and body movement during hard cornering.
Suitable for:
 •   Fast-road / track-day cars
 •   Autocross
 •   Lightweight performance builds
 •   Cars using uprated front torsion bars and dampers
Critical Fitment Exceptions:
Competition Stiffness Warning: A 27mm spring rate is roughly 125% stiffer than a factory 22mm bar. While the tubular design reduces weight, the ride will be extremely rigid. This setup is highly recommended for track-dedicated vehicles or high-horsepower competition builds only
 28 mm  (Extreme Competition / Weight Reduction)
The 28 mm tubular bar offers a substantial increase in rear spring rate and is aimed at cars with a more developed performance suspension setup.
Suitable for:
 •   Track-day Porsche 911s
 •   Competition-inspired builds
 •   High-grip tyres
 •   Uprated dampers
 •   Higher-powered engines
Critical Fitment Exceptions:
Extreme Stiffness Warning: A 28mm spring rate is over 160% stiffer than a factory 22mm bar. Even with the weight savings of a tubular design, the ride will be incredibly rigid. This setup is strictly recommended for track-dedicated vehicles, high-horsepower competition builds, or professional autocross setups.
  29 mm  (Extreme Competition / Weight Reduction)
The 29 mm tubular bar is a serious performance option designed for cars where chassis response and rear roll control take priority over road comfort.
Suitable for:
 •   Track-focused builds
 •   Autocross
 •   Motorsport applications
 •   Lightweight competition cars
 •   Cars running suitably matched front torsion bars and dampers
Critical Fitment Exceptions
Race-Only Stiffness Warning: A 29mm spring rate is over 200% stiffer than a factory 22mm bar. Even with the weight savings of a tubular design, the ride will be incredibly rigid. This setup is strictly recommended for track-dedicated vehicles, high-horsepower competition builds, or professional autocross setups.
 30 mm  (Extreme-Duty / Race Only)
The 30 mm tubular rear torsion bar is a high-rate competition-focused option offering substantial resistance to rear body movement and acceleration squat.
Suitable for:
 •   Dedicated track cars
 •   High-horsepower applications
 •   Motorsport builds
 •   Aggressive suspension setups
 •   Cars with competition dampers and complementary front spring rates
Critical Fitment Exceptions:
Maximum Stiffness Warning: A 30mm spring rate is over 250% stiffer than a factory 22mm bar. This results in an incredibly rigid ride that is not suitable for daily street use.
Chassis Reinforcement Required: Due to the massive torque these bars exert, we highly recommend using reinforced spring plates and checking your torsion housing for structural integrity.
  31 mm  (Professional Race / Weight Reduction)
The 31 mm tubular bar is the stiffest option in this range and is intended primarily for highly developed competition suspension systems.
Suitable for:
 •   Dedicated race cars
 •   Motorsport applications
 •   High-downforce or high-grip builds
 •   Lightweight competition
 •   Porsche 911s Suspension packages using appropriately matched front spring rates and dampers
Critical Fitment Exceptions:
Maximum Rigidity Warning: A 31mm spring rate is over 290% stiffer than a factory 22mm bar. This setup is strictly for dedicated track vehicles, heavy V8-conversion sand rails, or professional-grade drag racing.
Advanced Damping Required: You must use high-end, race-valved adjustable shocks to control the energy of a 31mm bar; standard street shocks will fail to manage the rebound speed, resulting in dangerous handling.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

RT11

The product you are viewing cross references to these numbers

Rear trailing arm to spring plate eccentric bolt.
Fits:
Porsche 911/912 1965-73
Diagram ref no 27

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90133313310

The product you are viewing cross references to these numbers

Rear trailing arm to spring plate eccentric bolt.
Price is each.
Fits:
Porsche 911/912 1965-89
Porsche 911 (930) 1975-89
Diagram ref no 28

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90133313305

The product you are viewing cross references to these numbers

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

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90133315300

The product you are viewing cross references to these numbers

QuickChange™ Torsion Bars, REAR
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

Plated & Plugged Hollow Torsion Bars. - REAR
Plated/Plugged 27mm, PAIR
Fits:
Porsche 911/912/930 1965-86
Porsche 356 A / 356 B / 356 Pre-A, C And CS Read Notes* (1948-65)
Our Plated & Plugged Hollow torsion bars are the best available. The ends are plugged to prevent moisture entry that rots ordinary hollow bars from the inside out. The entire bar is zinc plated for superior protection.
Excellent quality control means proper spline fit and spring-rate consistency bar-to-bar. Inferior quality competing bars fail on all counts.
• Hollow, light weight
• Plated & Plugged
• Consistent spring rate
• Great spline fit
Upgrade Hollow bars provide a nice weight savings over equivalent spring rate solid bars, especially true of the heavier rear bars. This is a great way to trim extra pounds from the back of your car.
* The size given is a solid-bar-equivalent. Actual hollow bar measures about. 5mm larger.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

1-PP911R27

The product you are viewing cross references to these numbers