Brey Krause R-9247 Passenger Seat Bottom Mount Adapter - BMW E46/E85/E86 1976 6/1 pr ratio with less

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

while an elastic wrist stop ensures a secure fit

We were the first to manufacture exhaust components for the MP4-12C in 2012

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

Brey Krause R-9247 Passenger Seat Bottom Mount Adapter - BMW E46/E85/E86 1976 6/1 pr ratio with lessThe 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).