Launched in 2003, ‘xDrive‘ is the brand name of BMW‘s modern all-wheel-drive system.
Initially more common in Europe and North America, this move to include more AWD vehicles to keep pace with competing brands proved popular, and today, most BMW car and SUV models include an xDrive variant of some kind in all global regions.
And it’s pretty darn good too, with newer systems electronically controlling the torque split ratio between the front and rear axles to provide BMW‘s famed ‘Ultimate Driving Machine’ experience, but with the benefit of increased grip and stability when cornering.
So what’s the downside? Well, for many owners, it’s the transfer-case-housed voided rubber bush which wears, allowing excessive movement and twist of the transmission at the centre of the vehicle and the associated on-off throttle drive-train ‘clunk’!
This week, for E46, E6x, E9x, X1 E84 & X3 E83 models, we are pleased to introduce an easy-to-fit bush insert solution designed to fill the voiding in the OE rubber bush to restrict overall movement and prolong bush life.
PFF5-4628 Transmission Case Bush Insert (Standard) is made from our Yellow 70A durometer material, providing an excellent balance of strength and compliance for improved performance on standard Petrol/Diesel vehicles whilst limiting NVH transmission into the cabin.
PFF5-4628P Transmission Case Bush Insert (Tuned/Track) is made from our signature Purple 80A material to restrict movement further for Tuned Petrol/Tuned Diesel vehicles and occasional track use.
PFF5-4628BLK Transmission Case Bush Insert (Motorsport) is made from our stiffest 95A Black Series material for Motorsport use, providing a no-compromise performance option for track-focused builds.
An increase in NVH should be expected when stiffening the connecting mount between the transmission and chassis. The harder the material, the greater the NVH transmitted.
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