Brey Krause R-9246 Driver Seat Bottom Mount Adapter - BMW E46/E85/E86 Category_Fuel Cells They allow you to remove

They allow you to remove and install belts in seconds and will not interfere with the factory seat belt

but don't have a compatible vehicle

Fabricated from Type 304

The mount maintains the factory power adjustment for both the seat height and front/back settings (requires BMW E30 window switches - not included

Bell 276 Replacement Shields fits many previous generation Bell helmets

Brey Krause R-9246 Driver Seat Bottom Mount Adapter - BMW E46/E85/E86 Category_Fuel Cells They allow you to removeThe Brey Krause R 9246 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).