ORIGIN 8 REVOLVR BB90/95 TO SHIMANO THREAD TOGETHER SB BLACKReplaces standard BB90 95 press in bearings commonly found on Trek bicycles with a solid, unified thread together bottom bracket interface Thread together bottom brackets provide a secure and stable shell interface for smoother operation and extended bearing life Low friction dual seals protect the bearings from harmful contaminants Sealed premium bearings are serviceable Models available for both Shimano HTII 24mm and SRAM GXP 22 24mm spindles