e*thirteen BSA Threaded Bottom Bracket - 83mm For 30mm Spindle Black

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