Easton Bottom Brackets have been developed for use in combination with Easton EC90 SL cranksets. Bottom brackets are an essential part of the bicycle that is often overlooked, but Easton saw it as an opportunity for performance gains and improved efficiency. Features: Bearing seals have a very low level of drag while retaining excellent protection qualities and keep contaminants out Low viscosity grease and optimized fill percentage hits the perfect balance between durability and minimal friction Specifications: Frame Interface: BSA/English Threaded Spindle Interface: 30mm (RaceFace/Easton CINCH, 386 EVO, Rotor 3D+, e*Thirteen P3 Connect, Zipp Vuma) Bottom Bracket Shell ID: 1.37 Shell Width: 68mm, 73mm Color: Black Weight: 91g