ACT Perf Street Rigid Disc - 3000311 BMW 135 AR1-SPSS kit features a Sport

AR1-SPSS kit features a Sport pressure plate for a nice upgrade

- Fits most EFI applications including turbo and supercharged

it's important to note many of them are manufactured using inferior materials for construction

Engraved Logo near base

and EFI systems that use feedback control to auto-tune

ACT Perf Street Rigid Disc - 3000311 BMW 135 AR1-SPSS kit features a Sport3000311 is a street rigid disc featuring premium organic materials with high copper content for better heat transfer and steel backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome moly hub is heat treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. Lightweight, solid hub design