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Porsche > 911 & 912 (1965-1989) > 911 1975-1977 3.0L Turbo (930) > Suspension Upgrades >

Rear Sub Frame

Rear Sub Frame

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Related, superseded, cross reference or alternative numbers for comparison.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

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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)
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About Rear Sub Frame

Improve Your Porsche Suspension with Performance Suspension Rear Sub-Frame Bushes: Technical Specifications and Benefits

Technical specifications of Performance Suspension Rear Sub-Frame Bushes:

  • Performance suspension rear sub-frame bushes are vital components in the suspension system of a Porsche.
  • They are located at the connection points between the rear sub-frame and the chassis of the vehicle.
  • Performance rear sub-frame bushes are designed to enhance suspension performance, handling, and overall ride quality.
  • They are typically made from high-quality materials such as polyurethane or synthetic elastomers, offering increased durability and resistance to wear.
  • Performance suspension rear sub-frame bushes are available as aftermarket upgrades or standard replacements for Porsche models.

Benefits of upgrading or replacing Performance Suspension Rear Sub-Frame Bushes for your Porsche:

Improved handling and stability: Performance rear sub-frame bushes offer increased stiffness and reduced flex, resulting in improved handling precision and stability during cornering, acceleration, and braking.

Reduced suspension play and improved responsiveness: Upgrading to performance bushes helps minimize play or sloppiness in the suspension system, providing a more direct and responsive connection between the rear sub-frame and the chassis.

Enhanced ride quality: Performance bushes help absorb and isolate vibrations, reducing harshness and noise, and improving overall ride comfort.

Increased durability: Performance rear sub-frame bushes are designed to withstand higher loads and provide increased durability compared to standard bushes, ensuring long-lasting performance even under demanding driving conditions.

Potential for adjustable designs: Some performance bushes offer adjustable features, allowing for fine-tuning of the suspension setup and optimizing alignment for improved tire wear and handling characteristics.

At Design911, we specialize in providing the correct parts and professional advice for your Porsche. We offer a wide range of performance suspension rear sub-frame bushes specifically designed for Porsche models, including both aftermarket upgrades and OEM replacements. Our knowledgeable team can assist you in selecting the appropriate rear sub-frame bushes based on your Porsche model, year, and specific suspension requirements. We understand the importance of achieving optimal suspension performance and handling characteristics, and we can guide you in choosing the best bushes that suit your needs. With our expertise and commitment to customer satisfaction, we can help you enhance your Porsche's suspension precision, stability, and overall driving experience. Contact us today to benefit from our comprehensive support and access high-quality parts tailored to your requirements.

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