Stock rubber lower shock mounts fail prematurely, especially in racing conditions. We have tested a variety of rear shock mounts, and decided to design our own version. This is a low profile mount CNC machined from aluminum with a smooth mono-ball bearing that eliminates deflection. Low profile design maximizes rear damper travel. Mono-ball rear lower shock mount mitigates unwanted deflection, optimizing shock efficiency and performance. Metal hard coating for maximum durability Enables maximum shock body articulation for low-friction movement, diminishing side loading, and improving shock performance. Engineered to be compatible with the factory non-M taper seat stud style shocks (not eyelet mount found on the M3), Preserves the OE shock position. Fitment:E82, E88 E90, E92, E93 *Includes 2 Rear shock mounts & hardware.