e*thirteen BSA Theaded Bottom Bracket - 68/73mm For all e*thirteen Base Cranks 24mm Spindle BLK

e*thirteen Threaded Bottom BracketsBearings feature high performance seals and custom grease specification for top-notch durability and smooth spinninge*thirteen threaded BBs cannot be used to retrofit a BB30 crankset onto a BSA threaded frameLarge custom sealed 6806 bearings are replaceable and serviceable