Powerflex Transmission Mounting Bush (Track) BMW E8X, F2X, F3X, E36, E46, E9X, E39, E32, E31, E85, E86, E89, G29 inc M models

£89.88 (£74.90 excl. VAT)

Designed with trackdays in mind to replace the tear-prone soft rubber factory transmission mounts, a common cause of knocking, mis-shifting and over-revving. Fits RWD vehicles only. Made using CNC machined Aluminium Caps with captive securing bolts and a Purple 80A Durometer polyurethane body, they increase stiffness over OE by 260% for razor-sharp engine response.They are also the perfect accompaniment to our PFF5-4650Tuneable Engine Mounton E36/E46/E9* models.

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Time to do some sums…

WHY POLYURETHANE SUSPENSION BUSHES?Polyurethanes have been with us since the late 1930s, however, recent advances have now made it possible to engineer very special properties into this exciting material.

Suspension bushes are some of the most highly stressed components fitted to a motor car. They undergo enormous strains and in the most arduous of conditions with no maintenance or lubrication.

The material they are manufactured from is a rubber compound containing natural products that deteriorate with age. It becomes softer and more pliable, resisting the forces placed on it less and less. Therefore allowing more and more movement of suspension components and offering less and less control over the suspension geometry.

This in turn causes accelerated tyre wear, braking instability, and poor handling. This is the single biggest reason you can instantly tell the difference driving a three-year-old car compared to a showroom new one. However, even new cars will benefit from POWERFLEX bushes because of the superior design they offer much more effective control of the suspension components to a much greater extent than normal rubber items.

With the technological advances in this material, it has been possible to overcome the common problem associated with harder bushes which is increased noise. By correctly engineering the polyurethane compound, bushes can be made 25-30% stiffer than new rubber items but with exactly the same noise absorbing properties.

  • POWERFLEX bushes make sense.
  • POWERFLEX for improved performance.
  • POWERFLEX for increased safety.
  • POWERFLEX for prolonged tyre life.


Additional information

Weight 10 kg


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Chassis Version

E31, E32, E36, E39, E46, E8x, E9x, F2X, F3X, G2X, E5X