Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram
Porsche specialists based in the UK
Porsche > 911 & 912 (1965-1989) > 911 1984-1986 3.2L > Suspension Upgrades >

Rear Sub Frame

Rear Sub Frame

Filter by brand
DISPLAYING 1 to 2 (of 2 products)
HD trailing arm bushing kit. Porsche 911/912/930 65-89 - 90133105900 - PR52005P, S52005P, S-52005P
3
HD trailing arm bushing kit. Porsche 911/912/930 65-89
Special Offer
90133105900/2
Product Information
Product Information
HD trailing arm bushing kit.
Comes as a complete kit, (1) per car with bushings for both rear sides. replacement for OE 90133105900

oematch

Fits:
Porsche 911 / 912 / 930 1965-89

High Density trailing arm bushings for the 911 can both eliminate clunks from failing factory units and restore proper suspension geometry in your street or track car. Made from 25% higher durometer than OEM (901.331.050.00) parts, these are the ideal replacement for either failed or simply aging stock rubber units. These bushings locate rear trailing arms better under the sustained loads often experienced on track and in the rigors of everyday driving.

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Related, superseded, cross reference or alternative numbers for comparison.

90133105900
90133105900

The product you are viewing cross references to these numbers
Heavy Duty Rear Trailing Arm Bushings Set. Porsche 911/912/930 65-89 - 90133105900 - PR52005P
3
Heavy Duty Rear Trailing Arm Bushings Set. Porsche 911/912/930 65-89
90133105900/3
Product Information
Product Information
Heavy Duty Rear Trailing Arm Bushings Set.

Upgrade your Porsche’s rear suspension with the Heavy Duty Rear Trailing Arm Bushings Set — designed to deliver sharper handling and long-lasting durability.
These bushings secure the rear trailing arms to the chassis and are critical for maintaining correct wheel alignment and suspension geometry. Over time, original rubber bushings soften or crack, leading to excess flex, vague handling, and uneven tire wear.
The HD bushings are made from a stiffer, high-durometer rubber compound that resists deformation under load. This firmer material minimizes unwanted arm movement during acceleration, braking, and cornering — ensuring your Porsche remains planted, predictable, and precise.
Sold As A Set Of 4
x1 Set Required Per Car.

Fits:

  • 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)

Diagram Ref No 3

What This Product Does:
  • Longitudinal control – they resist fore-aft movement of the trailing arm under acceleration, braking, or road loads.
  • Vibration damping & isolation – they buffer road shock, noise, and vibration from the rear suspension.
  • Suspension geometry stability – they help maintain proper alignment of the rear wheel under load (camber, toe, track).
  • Flex control – heavier-duty bushings reduce unwanted deflection when cornering or under high load.

Symptoms Of Worn Or Failing Trailing Arm Bushings:
  • Rear-end clunks or knocks over bumps or during acceleration / deceleration
  • Loose or vague rear behavior — the rear may feel less planted or drift under load
  • Uneven or accelerated rear tire wear due to shifting alignment or toe changes
  • Poor handling / reduced grip in corners or when the suspension is loaded
  • Vibration or harshness transmitted from rear suspension movements

Why A Heavy Duty Version Matters / Benefits Of Upgrading:
  • Better Handling Feedback & Precision - Less compliance means the rear responds more immediately to inputs — you feel more connection and confidence.
  • Improved Geometry Under Load - During cornering or under dynamic stresses, a stiffer bushing holds alignment (camber, toe) more reliably.
  • Reduced Deflection & Movement - Limits unwanted movement in the rear suspension, especially under acceleration, braking, or high lateral loads.
  • Increased Durability - Heavy-duty compounds resist fatigue, heat, and aging better than soft OEM rubber, especially in performance use.
  • Better Tire Wear Behavior - With more consistent alignment, your rear tires wear more evenly and predictably.
  • Upgraded Feel Without Harshness - While fully rigid mounts can introduce harshness and noise, a quality heavy-duty bushing strikes a better balance: firmer control with acceptable comfort for road use.



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

90133105900
90133105900

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 products)
Also found on these pages
About Rear Sub Frame

Porsche Rear Subframe | Design911 Suspension Upgrade Components for Rigidity, Alignment & Handling Precision

The rear subframe is the structural foundation of your Porsche’s suspension and drivetrain assembly. It supports the suspension arms, differential, and other critical components while maintaining precise geometry under high load. A strong, correctly aligned subframe ensures stability, balance, and predictable handling — particularly during hard acceleration and cornering.

At Design911, we supply a comprehensive selection of rear subframes and upgrade components, engineered for precision, strength, and durability. Manufactured from high-tensile steel or lightweight alloy, these subframes provide improved rigidity and reduced flex, ensuring consistent performance in both road and motorsport environments. Whether you’re performing repairs, chassis restoration, or performance upgrades, our rear subframes deliver the structural integrity your Porsche deserves.

What Does the Rear Subframe Do?

The rear subframe acts as a mounting structure that connects the suspension and drivetrain to the vehicle body.

Core Functions:
• Supports rear suspension arms, differential, and drivetrain mounts.
• Maintains accurate suspension geometry under load.
• Distributes forces from cornering, braking, and acceleration.
• Reduces vibration and road harshness through the chassis.
• Improves rigidity and alignment stability for precise handling.

A properly aligned rear subframe keeps your Porsche balanced and composed, ensuring every component performs as designed.

Why Do Rear Subframes Fail or Degrade?

Despite their strength, rear subframes are exposed to high stresses, corrosion, and impact forces — all of which can lead to fatigue or structural weakening.

Common Causes of Failure Include:
• Corrosion or rust weakening metal integrity.
• Cracks or distortion from high-impact loads or collisions.
• Worn mounting bushes causing excessive movement or noise.
• Metal fatigue from performance or track use.
• Improper alignment or installation after suspension work.

Failure can cause instability, poor alignment, vibration, or uneven tyre wear — all of which compromise your Porsche’s safety and handling.

Why Replace or Upgrade Your Porsche Rear Subframe?

Replacing or upgrading the rear subframe restores suspension alignment and chassis rigidity. Performance subframes improve geometry retention and reduce flex, offering sharper handling and more predictable performance.

Key Benefits:
• Restores correct alignment and rear suspension stability.
• Increases chassis rigidity for improved feedback.
• Eliminates vibration and rear-end instability.
• Available in performance-engineered and corrosion-resistant finishes.
• Fits Porsche 911, 944, 968, Boxster, Cayman, Cayenne, and Macan models.
• Perfect for servicing, restorations, or performance suspension builds.

Design911’s Porsche rear subframes deliver precision, strength, and durability — ensuring your Porsche remains responsive, safe, and dynamically balanced.

Highlights

• Premium Porsche rear subframes and upgrade kits.
• Precision-engineered for structural rigidity and alignment accuracy.
• Constructed from high-tensile steel or lightweight alloy.
• Restores handling precision and reduces unwanted flex.
• Ideal for both road and motorsport applications.
• Suitable for servicing, restoration, or performance upgrades.

You may also like
Popular Models