Planted Seat Bracket - BMW 3 Series (E21, 1975-1983) - Driver/Left Category_Kart Racing Shoes 5" of forward seat travel

5" of forward seat travel

club track days or restored classics seeking modern braking capability while retaining period‑correct hardware

Includes both the driver and passenger mounts for a complete install

then hand retighten

8L and Spec Miata racers

Planted Seat Bracket - BMW 3 Series (E21, 1975-1983) - Driver/Left Category_Kart Racing Shoes 5" of forward seat travelPlanted Seatbase Adapter Brackets are an easy solution for adapting your aftermarket seat to the floor of your specific vehicle. Planted Seat Brackets are constructed from 3 16" thick steel for superior strength. Able to accept sliders from most major seat manufacturers like Bride, Cobra, OMP, Racetech, Recaro, Sparco, Status and more, allowing for easy installation of aftermarket seats in your vehicle. Extra material is also provided for direct seat