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Spring Plate

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DISPLAYING 1 to 4 (of 4 products)
Special Offer
91133300900BHD
Product Information
Product Information
Bushings set with instructions:  
Includes 4x Heavy Duty rubber softness spring plate bushings  (w/ 80-85 shore A)

Outer dia: 75mm
Inner dia: 48mm
Thicknes: 42mm

Fits:
Porsche 911 1968-89
Porsche 912 1968-69
Porsche 912 1976
Porsche 930 1978-79

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Related, superseded, cross reference or alternative numbers for comparison.

91133300900BHD
91133300900BHD
91133300900
1652251110

The product you are viewing cross references to these numbers
Special Offer
91133300900B
Product Information
Product Information
Bushings set with instructions:  
Includes 4x Standard rubber softness spring plate bushings  (w/ 55-60 shore A)

oematch

Outer dia: 75mm
Inner dia: 48mm
Thicknes: 42mm

Fits:
Porsche 911 1968-89
Porsche 912 1968-69
Porsche 912 1976
Porsche 930 1978-79

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Related, superseded, cross reference or alternative numbers for comparison.

91133300900B
91133300900B
91133300900
1652251110

The product you are viewing cross references to these numbers
2061501
Product Information
Product Information
Spring plate PolyBronze bearings
For Porsche 911, 912, 930 1968-1989 Spring Plate SAW

elephantracing

PolyBronze bearings are superior to plastic bushing alternatives, here's why:

Suspension mounts are coarse sheet metal pressings. They tend to be out-of-round and have irregularities that deform ordinary polyurethane bushings, pinching and binding the friction surface. Polyurethane is "grippy" with an inherently high coefficient of friction and combined with pinching polyurethane bushings create a lot of friction. The result is a harsh ride and reduced tire adhesion.

PolyBronze have a rigid bronze bearing core that does not deform. The polyurethane jacket absorbs mount irregularities while the bronze inner bearing remains true, providing a free-moving machined-fit that rides on a precision race. Provided grease fittings make re-lubrication a breeze and a figure 8 groove keeps grease in place.

The combination delivers zero squeaks and friction-free suspension movement. Well suited to street or track, ride quality.

PolyBronze is a precision bronze bearing encased in a polyurethane jacket. The combination delivers a smooth-ride with the extreme performance of a metal bearing.

✔ No squeaks or binding
✔ Extremely smooth ride quality
✔ Easier to install than rubber bushings
✔ Integrated grease fittings and grooves

Note – 1967 spring plate bushings changed mid-year. The following '67 chassis numbers transitioned to the late style '69-'89 style bushes.

• '67 911 from Chassis Serial Number 307 325
• '67 912 from Chassis Serial Number 354 938
• '67 911 S from Chassis Serial Number 305 101 A

All earlier '67 chassis numbers use the early '65-'66 style bushes.

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

2061501
2061501
91133300900
91133300905
90133300301
90133300309

The product you are viewing cross references to these numbers
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
DISPLAYING 1 to 4 (of 4 products)
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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