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Porsche > 911 & 912 (1965-1989) > Suspension Upgrades >

Spring plates

Spring plates

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DISPLAYING 33 to 34 (of 34 products)
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Uprated Rear Spring Plate, With G50 Gearbox. Porsche 911 1987-89 - 91133300906/2, 91133300902, 91133300906 - PR08008P
5
Uprated Rear Spring Plate, With G50 Gearbox. Porsche 911 1987-89
91133300906/3
Product Information
Product Information
Uprated Rear Spring Plate, With G50 Gearbox.
Upgrade your Porsche’s suspension precision with this Uprated Rear Spring Plate, designed specifically for G50 gearbox-equipped Porsche 911 models (1987–1989). This enhanced spring plate replaces the factory unit with a stronger, stiffer design that improves rear suspension control and geometry accuracy.
Sold Each.
x2 Required Per Car.

Fits:
  • Porsche 911 1987-1989 3.2L G50

Diagram Ref No 6

What This Product Does:

  • The uprated rear spring plate connects your Porsche’s torsion bar to the rear suspension arm, transferring spring tension into the chassis. It controls ride height, rear camber, and toe, and ensures the suspension geometry remains stable under load.
  • The “uprated” design improves on the original factory plate by using stronger materials and stiffer rubber bushes, reducing unwanted flex and maintaining alignment during hard cornering, acceleration, and braking.
  • For Porsche 911 models equipped with the G50 gearbox (1987–1989), this version ensures perfect fitment with the later rear suspension layout and provides a more precise, performance-focused response.

Symptoms Of A Worn Or Failing Spring Plate:
  • Uneven or Unstable Rear Ride Height – The car may sit lower on one side or show inconsistent ride height after bumps.
  • Poor Handling or “Rear-End Float” – The rear feels loose or unpredictable when cornering, braking, or accelerating.
  • Excessive Noise or Clunking – You may hear knocks or creaks from the rear suspension as the bushes wear or the plate moves.
  • Excessive Tire Wear – Incorrect geometry from worn plates can cause uneven rear tire wear, especially on the inside edge.
  • Vibration or Instability at Speed – Worn bushes can allow unwanted movement in the rear suspension, affecting high-speed stability.

Why Replacement With Uprated G50 Versions Matter:
  • Restores Geometry Precision: Keeps torsion bar alignment correct, maintaining stable camber and toe under load.
  • Improves Handling: Firmer bushings and stiffer construction minimize flex, improving cornering response and balance.
  • Eliminates Rear-End Slop: Reduces play and movement in the suspension for a tighter, more connected driving feel.
  • Enhances Durability: Modern uprated materials resist corrosion, fatigue, and aging better than the originals.
  • Essential for Restorations & Performance Builds: Ensures suspension performs at its best when upgrading shocks, torsion bars, or ride height.



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
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
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 34 (of 34 products)
1 2 3
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About Spring plates

Porsche Spring plates

At Design911, we supply a wide range of spring plates for Porsche models, from OE-type replacements to performance-adjustable setups for classic and later cars.

Our product range includes

Why do Porsche Spring plates matter?

Spring plates sit between the torsion bars or springs and the rear suspension on many Porsche models, and play a key role in how the rear of the car moves, feels and can be adjusted. Over time the plates and especially their bushes can wear or corrode, which affects how smoothly the suspension articulates and how accurately ride height and geometry can be set. Renewing tired components helps the rear suspension work freely again and supports precise setup for road or track use.

  • Keep the rear of your Porsche feeling consistent and controlled
  • Support accurate ride height and geometry adjustment during setup
  • Reduce unwanted noises from worn bushes and sticking movement
  • Help maintain long-term enjoyment and potential resale appeal of classic Porsche models

Common options & kits

Individual replacement parts Specific items to address a particular area or issue without changing everything at once.

  • Ideal for targeted repairs
  • Lets you replace only what is needed
  • Helps keep initial costs under control

Matched sets or pairs Components supplied together so both sides or related items are renewed at the same time.

  • Consistent feel and behaviour from left to right
  • Helps avoid uneven wear or response
  • A sensible choice for routine suspension refurbishment

Complete kits Grouped parts designed to refresh a whole area of the suspension in one go, useful for upgrades and restorations.

  • Everything specified in a single package
  • Saves time compared with sourcing parts individually
  • Ideal when upgrading or restoring your Porsche

Brands available in this category

For this category we stock a wide choice of trusted brands for Porsche models. You can also browse and filter by brand on this page to focus on your preferred manufacturers.

When should you review or replace your Porsche spring plates?

Checking spring plates and their bushes during suspension work helps you spot wear, damage or age-related deterioration before it affects comfort, refinement or leads to more expensive repairs later on.

  • Existing parts are worn, cracked, noisy, corroded or seized
  • You notice knocking, squeaking, binding, inconsistent ride height or harshness over bumps
  • Rear alignment or ride-height adjustment has become difficult or unstable
  • You are carrying out a wider suspension refresh, geometry setup or restoration

If any of these apply, it is a good time to review your spring plates and replace anything that is past its best so your Porsche stays dependable and enjoyable to drive.

Explore Porsche spring plates with Design911

Browse spring plates for Porsche at Design911 — from individual components to complete kits — and find options to suit everyday maintenance, performance upgrades and full classic restorations.

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