Ceramic MTB BSA Bottom Bracket for Shimano 68mm 73mm with Ceramic Bearings
External BSA MTB Ceramic Bottom Bracket with Ceramic Bearings by World Champions ACER Racing. For English threads 1.37″ x 24TPI 68/73mm. Will fit Shimano Hollowtech II Mountainbike Cranksets Please see our full line of bottom brackets with our world famous ceramic bearings in our eBay store under “Bicycle Race Parts”