Brey Krause R-9247 Passenger Seat Bottom Mount Adapter - BMW E46/E85/E86 1976 This system is aggressive and

This system is aggressive and maximizes power while also removing unnecessary weight from the LEFT side of the car

6/1 pr ratio with less than 1 PSI drop Cubic inch volume mass increase from 258 Stock to 650 cubic inches

Engineered for sprint/rally and high‑down‑force race cars such as the Radical SR3

Although the factory engine packages are fantastic performance machines

63 ft/lbs +21

Brey Krause R-9247 Passenger Seat Bottom Mount Adapter - BMW E46/E85/E86 1976 This system is aggressive andThe Brey Krause R 9247 Seat Mount is an innovative solution that attaches bottom mounting Sparco, Cobra or Recaro seats to the OE factory, power slider mechanisms on BMW E46 (including M Series), and E85 E86 (Z4 Roadster Coupe) cars. The mount maintains the factory power adjustment for both the seat height and front back settings (requires BMW E30 window switches not included, but easily sourced).