StopTech 08-13 BMW M3/11-12 1M Coupe Front BBK w/ ST-60 Trophy Calipers Slotted 380x35mm RotorsThe ultimate street braking system; with naturally anodized lightweight components adapted from our racing program. They use the same STR calipers; AeroRotors(R) and AeroHats(R) as the Trophy Race BBKs; but add silicone dust boots to extend service intervals and anti rattle rotor mounting hardware for quieter street operation. They also include StopTech(R) Street Performance brake pads for high performance street and occasional track use; and StopTech