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Suspension Upgrades

Durometer Selection Guide
PowerFlex Bushings Now Available in Two Ranges

Introducing PowerFlex Black Race Bushings!

PowerFlex Black Series

For 15 years Powerflex  have been the market leader in high performance polyurethane suspension bushes with the widest and fastest growing product range.

Powerflex "street" bushes are developed to offer the best of all worlds

  • Performance
  • Durability
  • Safety

However there are a number of applications where chassis performance is the only consideration. For the ultimate in performance Powerflex introduced The Black Series, a new range of bushes developed for Race, Rally and Circuit use.

PowerFlex Black Series

Designed for the Track - Ready to Race - Engineered to be the best

Powerflex Black Series bushes are manufactured using a 95 Shore A compound to provide maximum control of chassis geometry.  

This compound can be up to 80% more resistant to load than standard rubber and 25% stiffer than PowerFlex purple ("street") performance material.  

If your requirements are purely for the ultimate in handling and chassis performance then Powerflex Black Series are unique, offering the most precise and accurate alignment for your chassis.  

Performance - Developed for ultimate performance using the toughest materials.

Precision - Engineered for the most accurate control of chassis geometry.

Practical - Manufactured to be easily fitted without the need for special tools.

PowerFlex Black Series

How to Choose the Correct Durometer

PowerFlex Street (Purple):
Replacement Performance Susension Bushings

  • Performance
  • Durability
  • Safety

Powerflex Black Series (Race): Ultimate Performance Bushings Offering The Most Precise And Accurate Alignment

  • Designed For The Track
  • Ready To Race

Powerflex polyurethane bushings are designed to decrease the amount of deflection in your car's suspension which improves handling, driver feedback, and tire wear. A premium polyurethane formulation is used, specifically to provide minimal NVH (noise, vibration, harshness) and increased longevity over stock rubber bushings.

Bushings are produced in one of three durometers:

  • yellow (70A): firmer than stock but offering some compliance for NVH
  • purple (80A): firmer than stock with less compliance, balancing NVH and stiffness
  • black (95A): very stiff for maximum preservation of suspension geometry 
Unlike other brands using only one urethane for all applications, Powerflex design engineers choose the correct hardness to allow for the specific movement or rigidity required for each location while minimizing unwanted NVH. 

Urethane hardness is standardized per fitment and location, while select parts are available in an optional stiffer urethane (The Black Series) for track and autocross performance where NVH is less important. Consequently, the "Street" kits will contain mostly Purple bushings, but some of the individual components may be Yellow (e.g. steering shaft ) or Black (e.g. drop links). Likewise, when selecting "Race" kits, most of the bushings will be the harder durometer, but some of the individual components may be Purple (e.g. torsion carrier pivots) or Yellow (e.g. steering shaft).

Powerflex copper-based grease is supplied with every bushing set. We suggest using only a copper based grease for lubrication. Bushings will rarely need re-lubing due to the unique grooves and knurls cast into the material to hold the lubricant. It is not suggested to use an "anti-seize" product for lubrication.

Powerflex is a truly engineered product, not just a copy of the stock part in a different material. Redesigned to address common factory failure parts, Powerflex bushings allow the articulation required to far outlast the stock part it is replacing while maintaining control of the movement for increased performance. Additionally, Powerflex Engineering Line products for some fitments include unique features like polyurethane monoballs and offset geometry to provide ultimate performance without the harshness of a metallic monoball race part. Polyurethane engine/drivetrain mounts and reinforcements are available for some fitments to reduce movement for better throttle response and more power to the wheels.


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