Brey Krause R-9220 Driver Seat Side Mount Adapter - BMW E46/E85/E86, Large Width Color_Flat Black They also are designed to

They also are designed to use the factory BMW switch (when used with power sliders)

perforation zones and Alpinestars’ exclusive rubber compound sole for grip and support

A kid's sized Alpinestars sole is then added

aggressively styled

Brey Krause R-9220 Driver Seat Side Mount Adapter - BMW E46/E85/E86, Large Width Color_Flat Black They also are designed toThe Brey Krause R 9220 Seat Mount is an innovative solution that attaches aftermarket racing seats directly to BMW OEM power or manual seat sliding mechanisms. By using this side mount, the racing seat can be bolted directly to the existing driver side seat slider hardware on any BMW E46 3 Series model (including the M3) or BMW Z4 (E85 E86). Utilizing the factory sliders not only allows for a significantly greater adjustment range, but they are