TRP EVO Bottom Bracket High-Quality Smoother pedaling can easily be achieved with an upgraded bottom bracket. The TRP EVO Bottom Bracket is a high-quality threaded bottom bracket that is designed to provide smooth pedaling in the most challenging conditions. It is only compatible with 30mm crank spindles and 68mm English BSA threaded frames. Features Compatible with 30mm crank spindles Designed for frames with 68mm bottom bracket shells Spindle interface type: Race Face/Easton CINCH, 386 EVO, Rotor 3D+, e*Thirteen P3 Connect, Zipp Vuma | Trp | Evo Bottom Bracket | Black | 30Mm