ACT 2001 BMW M3 4 Pad Rigid Race Disc Forced Induction>Boost Controller Accessories The GNX4 caliper with its

The GNX4 caliper with its unyielding strength and superior piston design generates positive pedal response and high clamping efficiency with a substantial weight savings over original calipers

Brembo 09-16 Panamera/S/4S/Turbo Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Drilled-Red

the Stage 3 Boost Cooler® controller is designed to mount on the steering column or the dash so no additional gauge pods need to be purchased and functions as a boost gauge

the rumors are true - they don't matter once you remove the backpressure issues of the stock configuration (and you can't open the valve yourself anyway)

ACT 2001 BMW M3 4 Pad Rigid Race Disc Forced Induction>Boost Controller Accessories The GNX4 caliper with its4240029 is a 4 pad rigid race disc made with high quality, ceramic friction materials. The disc engagement is harsher, but shifting is faster. The race disc features top grade rivets to securely fasten the part together. The rivet design and materials are carefully selected for maximum strength. The 4 pad rigid race disc is well suited for the smaller disc sizes in smaller engines. Installation Instructions Warranty