BBK 2PC SPORT TROPHY,FRT

Front, 6-piston, weight-optimized, balanced, big brake kit for E46 M3. These kits are optimized for exclusive track use, featuring lighter weight and specific design features dictated by extreme track requirements. The ST60R calipers are 20% lighter due to extra machining, and the Aerorotors provide 50% more air airflow with a special mounting system. The kit also includes hard-anodized coating on calipers and rotor hats, forged caliper brackets with mounting studs, brake pads (309 Sport for Trophy Sport, SR33 Race for Trophy Race), and stainless brake lines. 18" wheels are required. Race calipers do not use dust boots and are for racing or track use only. For street use, the Trophy Sport kit is recommended. These kits have been discontinued by Stoptech/Centric.