Powerflex’s PFF5-4021 Engine Mount Inserts are a two-piece kit made using their yellow 70A durometer material, designed to fill the voiding of the OE rubber mount to limit drivetrain movement and sharpen throttle response on standard or mildly tuned vehicles. A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine/transmission and chassis. The harder the material used, the greater the NVH transmitted.

These are a true must for all big power, and/or hard-used M2 Competition, M3 and M4 models with the S55 engine.

Also available in Powerflex’s Black Series for track/race use. Fits BMW part numbers 22112284817 and 22112284818. Priced per pair.