Powerflex Black Series Rear Trailing Arm Bush – Set of Four

The Powerflex Black Series rear trailing arm bushes represent a significant upgrade for vehicles primarily used in track day, racing, or demanding rally applications. These aren’t simply enhanced road-going components; they are meticulously engineered for uncompromising performance and precise chassis control. Powerflex has established itself as the leading manufacturer of high-performance polyurethane suspension bushes, and the Black Series embodies their commitment to pushing the boundaries of what's achievable in vehicle handling.

Unlike standard rubber bushings which degrade over time, impacting alignment and responsiveness, or even the firmer Purple series offered by Powerflex, the Black Series utilises a highly specialised 95 Shore hardness polyurethane compound. This material selection is critical. It delivers substantially increased resistance to deformation under load – up to 80% greater than conventional rubber bushes – and approximately 25% stiffer characteristics compared to Powerflex’s already renowned Purple performance bushes.

The rear trailing arm plays a vital role in maintaining wheel alignment and controlling suspension movement during cornering and acceleration. Excessive bushing deflection leads to imprecise handling, reduced tyre contact patch, and ultimately, compromised performance. The Black Series bushes virtually eliminate this deflection, providing a more direct connection between the chassis and suspension components.

Key Features & Benefits:

• Material Composition: Manufactured from 95 Shore hardness polyurethane for maximum stiffness and load resistance.
• Enhanced Control: Delivers superior control of chassis geometry under extreme conditions.
• Durability: Significantly outlasts standard rubber bushings, resisting wear, tear, and degradation.
• Precise Alignment: Enables more accurate and stable wheel alignment for optimised handling characteristics.
• Application Focus: Specifically designed for dedicated track, race, or rally use – not intended as a direct replacement for road vehicles prioritising comfort.
• Complete Set: This kit contains four bushes - sufficient to address both rear trailing arms.

The 95 Shore compound isn’t merely about stiffness; it's about predictability. While offering minimal compliance, the material maintains a consistent response throughout its operational range. This translates into repeatable lap times and enhanced driver confidence, knowing precisely how the vehicle will react to inputs.

It is important to understand that these bushes introduce a noticeable increase in NVH (Noise, Vibration, and Harshness). The reduced compliance means more road feel and vibration will be transmitted to the chassis. This is an inherent trade-off for the level of performance gained – a characteristic accepted and even desired by drivers focused on ultimate handling.

Technical Considerations:

• Shore Hardness Explained: Shore hardness is a measure of material resistance to indentation. A higher number indicates a harder, less flexible material.
• Installation: Professional installation is strongly recommended. Correct fitting procedures are essential to ensure optimal performance and longevity. The existing rubber bushes will require removal, often requiring specialist tools.
• Compatibility: This kit is designed as a direct replacement for the original rear trailing arm bushes on compatible vehicle models. Please consult Powerflex’s product catalogue or website to confirm suitability for your specific car.

For drivers committed to extracting every ounce of performance from their vehicles, and who prioritise handling precision above all else, the Powerflex Black Series Rear Trailing Arm Bush offers a substantial upgrade. They represent a focused solution for those demanding the ultimate in chassis control – a true ‘ready-to-race’ component.

This product is a high-quality replacement part available from Eurocarparts.com with options for convenient home delivery or collection from our nationwide network of stores.