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Porsche > 911 & 912 (1965-1989) > 911 1978-1989 3.3L Turbo (930) > Suspension & Axle >

Spring Plate

Spring Plate

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DISPLAYING 33 to 41 (of 41 products)
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Spring Plate Rubber Bushing Kit, Sport-Harder Rubbers. Porsche 911 1969-89 - 91133300900 - PR52041P
3
Spring Plate Rubber Bushing Kit, Sport-Harder Rubbers. Porsche 911 1969-89
Special Offer
PR52041P
Product Information
Product Information
Spring Plate Rubber Bushing Kit, Sport-Harder Rubbers.
Upgrade your Porsche’s suspension with this Sport Spring Plate Rubber Bushing Kit.
These bushings provide sharper handling and greater durability while still maintaining some compliance for road use. 

1 Set Required Per Car.

Kit Includes:

  • 4x Bushing
  • 4x Abresive Cloth
  • 1x Adhesive

Fits:
  • 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)

What This Product Does:
The Spring Plate Rubber Bushing Kit, Sport-Harder Rubbers is designed as a suspension upgrade for classic Porsche models. Unlike standard bushings, this kit uses harder rubber compounds for improved performance.

Functions Include:
  • Enhanced Suspension Control – Reduces unwanted flex in the spring plates.
  • Sharper Handling – Keeps the suspension geometry more precise during hard driving.
  • Reduced Deflection – harder rubber means less “squish” compared to standard bushings.
  • Durable Construction – longer-lasting than softer standard rubber under performance use.

Symptoms That Indicate You Need Replacement:
  • Rear suspension clunking or knocking under load.
  • Loose or unstable handling, especially in corners.
  • Poor alignment and uneven tyre wear.
  • Excessive body movement when accelerating or braking.
  • Cracked or deteriorated bushings visible on inspection.

Why Choose Sport/Harder Rubber Bushings:
  • For Enthusiasts – Ideal if you want a sportier, more connected feel without going to solid or polyurethane mounts.
  • Balanced Upgrade – Stiffer than standard bushings, but still offers some compliance for road use.
  • Improves Driving Dynamics – Better response during acceleration, braking, and cornering.



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Related, superseded, cross reference or alternative numbers for comparison.

PR52041P
91133300900

The product you are viewing cross references to these numbers
Spring plate rubber bushing kit. Porsche 911 / 930 / 912 - 2290003, 2290004, 64433313100, 90133319500, 90133300301, 90133300309, 91133300900, 91133300905, 91133300902, 91133300906
2
Spring plate rubber bushing kit. Porsche 911 / 930 / 912
PR5204
Product Information
Product Information
Spring plate rubber bushing kit
1 kit required per car

Fits
Porsche 911 SWB - 1965 to 1967
Porsche 911 - 1967 to 1989
Porsche 911 turbo - 1975 to 1989
Porsche 912 - 1966 to 1976

Stock Spec Spring Plate Bushes

A true stock spec bushing replacement for spring plates.
Spring plate bush condition can be accessed by looking at the hole in the spring plate cover. It should be concentric around the spring plate. When the bushings deform, the cover becomes non-concentric around the spring plate and in extreme cases actually contacts the cover plate – metal-to-metal.

More than just bushings, this is a full kit that includes inner and outer bushings (4 pcs), adhesive, instructions, long bolts to press in the bushings, and abrasive cloth to prep the surface.

Rubber is the choice if you want to restore factory ride and performance in a zero-maintenance solution. Check our PolyBronze Bearings for a high-performance solution.

Also see our Bushings Removal Tool to simplify the removal of old bushings.

Notes – 1967 spring plate bushings changed mid-year
The following 1967 chassis numbers transitioned to the late style 1969-89 style bushes.
• 1967 911 from Chassis Number 307 325
• 1967 912 from Chassis Serial 354 938
• 1967 911 S from Chassis Serial 305101 A

All earlier 1967 chassis numbers use the early 1965-67 style bushes



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

PR5204
2290003
2290004
64433313100
90133319500
90133300301
90133300309
91133300900
91133300905
91133300902
91133300906

The product you are viewing cross references to these numbers
Spring plate sports adjustable rear. Porsche 911 1969-86 - 90133300301, 90133300900, 91133300905, 91133300900, 90133300309 - PR08001P
4
Spring plate sports adjustable rear. Porsche 911 1969-86
Special Offer
90133300309/3
Product Information
Product Information
Sports adjustable rear spring plate.
2 Required per car. Price is EACH

Fits:
Porsche 911 1969 to 1986

Sport bushings – 30% harder rubber

Replace the rusty, worn, rear spring plates with this new, adjustable item.
Spring plates and bushes are designed for performance road and track use.

Diagram Ref No. 16

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

90133300309
90133300301
90133300900
91133300905
91133300900
90133300309

The product you are viewing cross references to these numbers
Spring Plate Sports Adjustable, Rear. Porsche 911 1969-86 - 90133300301, 90133300900, 91133300905, 91133300900, 90133300309 - PR08001P
4
Spring Plate Sports Adjustable, Rear. Porsche 911 1969-86
90133300309/6
Product Information
Product Information
Spring Plate Sports Adjustable, Rear.
Upgrade your Porsche’s suspension precision with this Sports Adjustable Rear Spring Plate, designed for fine-tuning ride height and corner balance. A direct replacement, this high-quality component fits classic Porsche 911 models and allows precise adjustment of rear torsion bar preload and camber settings.
Sold Each.
x2 Required Per Car.

Fits:
  • 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)

Diagram Ref No 16

What This Product Does:

  • Holding the torsion bar end and anchoring it to the chassis or suspension structure.
  • Providing a mounting surface for the torsion bar to twist against, effectively managing the rear spring action (torsional stiffness).
  • The adjustable aspect allows you to change preload, camber, or ride height for tuning the rear suspension setup to your desired performance balance (road or track)
  • Helping maintain correct geometry as suspension moves, ensuring better tire contact, handling, and responsiveness.

Symptoms & Signs You May Need Replacement:
  • Rust / corrosion / fatigue: The old plates may be rusty or weakened, especially in classic cars.
  • Sagging or misalignment: Rear ride height may fall, or camber might drift under load.
  • Uneven tire wear: Because geometry is off or not held firmly, the tires may wear more on one edge.
  • Poor rear handling / unpredictable grip: The rear may feel loose under cornering or shift unpredictably under load.
  • Difficulty setting or maintaining geometry: Without adjustability, it’s harder to dial in suspension tweaks, especially for track use or changed setups (wider tires, stiffer suspension, etc.).

Why This Upgrade Matters:
Factory spring plates offer limited adjustment. This RS-style sports version allows quick and accurate tuning of ride height, preload, and camber, giving sharper handling and better tire contact for both road and track.



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

90133300309
90133300301
90133300900
91133300905
91133300900
90133300309

The product you are viewing cross references to these numbers
Spring Plate Wrench Porsche 911 and 914-6 - S-08022, T11
5
Spring Plate Wrench Porsche 911 and 914-6
Special Offer
T11
Product Information
Product Information
Spring Plate Wrench.

rennline

Fits
Porsche 911 1964 - 1989
Porsche 914-6

Combining 24mm and 36mm wrenches, the Rennline Spring Plate Wrench was designed to be slim enough to reach those tough places between the spring plate and the frame.
Manufactured from tool steel, the wrench holds up under heavy use while it's slim size solves a common problem with spring plate installation.
Compatible with Rennline Adjustable Spring Plates.
Spring Plates QuickChange™ Kit. Porsche 911 / 912 / 930 - 2061003, 91133300905, 91133300902, 911333009XX, 90133300309, 90133300307, 90133301302, 90133300300, 90133300301, 91133300900
4
Spring Plates QuickChange™ Kit. Porsche 911 / 912 / 930
Special Offer
208090
Product Information
Product Information
QuickChange™ Spring Plate Kit.
Sold per kit, 1 kit req'd per car.

Fits:
Porsche 911/912/930 1965-1986

Available In Three Configurations
• For '65-'68 911/912, Short Wheel Base
• For '69-'86 911/912, '75-'86 930, Long Wheel Base
• For '69-'86 911/912, '75-'86 930, Splined Hub Kit


Change Torsion Bars and Adjust Ride Height

QuickChange spring plates make fast-work of torsion bar re-indexing and replacement. Screw-type adjuster makes corner balancing and ride height adjustment a breeze. Pairs the high quality of the factory design with ease of servicing.

• 5 minute torsion bar changes
• Fast and easy ride-height adjustment
• Accepts standard bushings

Setup is fast and easy

If you've ever re-indexed torsion bars to correct ride height, you can really appreciate the benefits of QuickChange. Used in combination with our QuickChange Torsion Bars and Polybronze bearings, this spring plate allows rapid replacement or re-indexing of torsion bars.

QuickChange Torsion Bar Changeout

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!

Unlike other aftermarket spring plates, QuickChange Spring Plates bolt the plates together. This prevents the plates "halves" from sliding against each other and eliminates failures and metallic clicking noises common with competing products.

Can be used with any torsion bar and bushing that fits factory spring plates – not included – however QuickChange Torsion bars and PolyBronze Bearings are required to use torsion bar extraction features.

Kits for '69-'86 long wheel base cars include a screw type height adjuster. Kits for '65-'68 short wheel base cars use an eccentric bolt height adjuster for improved tire clearance.

To add QuickChange functionality to your existing set of '77-'86 factory adjustable spring plates or ASP, you can order the Splined Hub separately.

Splined Hub Kits

The Splined Hub Kit includes the small plate and adjuster hardware to mate with the large plate from your donor set of factory adjustable spring plates, or the ASP. Order one kit per car.

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

208090
2061003
91133300905
91133300902
911333009XX
90133300309
90133300307
90133301302
90133300300
90133300301
91133300900

The product you are viewing cross references to these numbers
Spring plates rear RSR 935 style set Porsche 911 / 930 Turbo - 91133300905, 91133300902, 911333009XX, 90133300309, 90133300307, 2180000
2
Spring plates rear RSR 935 style set Porsche 911 / 930 Turbo
2180000
Product Information
Product Information
RSR 935 Rear Spring Plate Set For Porsche 911 / 930 Turbo

Fits:
Porsche 911 1966-89 with rear coil overs
Porsche 930 Turbo
Porsche 912's with rear coil overs

Features & Quality
Our coilover-only spring plate system has the added features and thoughtful engineering you expect from Elephant Racing.
Rubber Seals

Rubber seals keep water and contaminate out of the oversized precision rod ends. Seals are critical to extend rod end life for both racers and street cars. Racers have the occasional "agricultural excursion", covering the suspension with grit and dirt that accelerates wear of unsealed rod ends. Street cars have occasional exposure to water when washing or in rain. Rubber seals are key to long life.
Build Quality

Skillful TIG welding and machined radius on the plate. Hard anodize burgundy aluminum parts are tough, attractive and look good on most any color car. Top quality materials throughout.

Hardened alloy steel blades and aircraft grade aluminum to handle even high HP turbos.

Precision, Oversize rod end – For long trouble-free performance.
Ease of adjustment

Drilled hole positively defines plate length ensuring proper thread engagement at double adjuster and rod end, preventing accidental over-extension possible with double-slotted designs.
Two Height Settings

Choose stock height or 1 inch raise for anti-squat geometry (requires matching raise of trailing ar

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

2180000
91133300905
91133300902
911333009XX
90133300309
90133300307
2180000

The product you are viewing cross references to these numbers
Standard rear spring plate. Porsche 911 1987-89 with G50 gearbox - 91133300902, 91133300906, PS8868 - PS8868, PR08024P, 1650250500
2
Standard rear spring plate. Porsche 911 1987-89 with G50 gearbox
Special Offer
91133300906/1
Product Information
Product Information
Standard rear spring plate.
2 Required per car. Price is EACH

Fits:
Porsche 911 1987 to 1989 with G50 Gearbox
Porsche 911 turbo 1989 with G50 Gearbox

Replace the rusty, worn, rear spring plates with this new item.
Spring plates and bushes are designed for standard road use

Click 'Zoom in' for large parts diagram.
Diagram Ref No. 16

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

91133300906
91133300902
91133300906
PS8868

The product you are viewing cross references to these numbers
Uprated rear spring plate. Porsche 911 1987-89 with G50 gearbox - 91133300906/2, 91133300902, 91133300906 - PR08008P
2
Uprated rear spring plate. Porsche 911 1987-89 with G50 gearbox
Special Offer
91133300906/2
Product Information
Product Information
Uprated rear spring plate.
2 Required per car. Price is EACH

oematch

Fits:
Porsche 911 1987 to 1989 with G50 Gearbox
Porsche 911 turbo 1989 with G50 Gearbox

Replace the rusty, worn, rear spring plates with this new item.
Spring plates have harder bushes, designed for fast road, performance use.

Click 'Zoom in' for large parts diagram.
Diagram Ref No. 16

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

91133300906
91133300906
91133300902
91133300906

The product you are viewing cross references to these numbers
DISPLAYING 33 to 41 (of 41 products)
1 2 3
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About Spring Plate

Porsche Spring Plates | Design911 Suspension Components for Ride Height, Alignment & Stability

Spring plates are a critical part of your Porsche’s rear suspension system, connecting the torsion bars to the trailing arms and helping manage suspension travel and ride height. They act as pivot points that absorb energy during acceleration, braking, and cornering — ensuring smooth movement and maintaining chassis balance. Properly functioning spring plates preserve suspension geometry, enhance grip, and provide the responsive handling Porsche is known for.

At Design911, we supply a complete range of spring plates and components, engineered for precision, strength, and long-lasting performance. Manufactured from high-quality steel or performance-grade alloys, our spring plates deliver exact fitment and reliable operation under all driving conditions. Ideal for servicing, classic restorations, or performance tuning, they help maintain stability, comfort, and control across your Porsche’s suspension system.

What Do Spring Plates Do?

Spring plates play a vital role in controlling the movement and alignment of the rear suspension, ensuring even weight distribution and consistent handling.

Core Functions:
• Connect torsion bars to trailing arms for proper suspension movement.
• Regulate ride height and suspension travel.
• Maintain consistent rear wheel alignment under load.
• Absorb road impact to enhance ride comfort and grip.
• Provide smooth suspension articulation for balanced handling.

In perfect condition, spring plates ensure your Porsche remains stable, comfortable, and responsive — on both the road and track.

Why Do Spring Plates Fail or Degrade?

Due to constant movement, load stress, and environmental exposure, spring plates are subject to wear and corrosion over time.

Common Causes of Failure Include:
• Corrosion or rust weakening the plate material.
• Worn bushes or mounts causing excess play and vibration.
• Fatigue cracks from continuous torsional stress.
• Impact damage from potholes or aggressive driving.
• Incorrect alignment or ride height adjustments.

When spring plates fail, you may notice uneven ride height, poor alignment, or rear-end instability — clear signs that replacement is needed to restore balance and safety.

Why Replace or Upgrade Your Porsche Spring Plates?

Replacing worn or damaged spring plates restores suspension geometry, alignment accuracy, and overall handling performance. Upgraded plates offer improved adjustability and durability — ideal for performance builds or track preparation.

Key Benefits:
• Restores correct suspension geometry and rear alignment.
• Improves ride height consistency and handling stability.
• Reduces vibration, noise, and rear-end movement.
• Available in adjustable or fixed designs for various Porsche models.
• Fits Porsche 911, 912, 914, 944, and classic air-cooled models.
• Perfect for restoration, servicing, or motorsport applications.

Design911’s Porsche spring plates combine precision engineering and long-lasting performance — ensuring your Porsche handles with the strength and stability it was designed for.

Highlights

• Premium Porsche spring plates and related suspension components.
• High-strength steel or performance alloy construction.
• Restores alignment, ride height, and suspension balance.
• Available in adjustable and performance variants.
• Suitable for both classic and modern Porsche models.
• Perfect for servicing, performance tuning, or full restoration projects.

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