e*thirteen BSA Theaded Bottom Bracket - 83mm For all e*thirteen Base Cranks with 24mm Spindle Black. e*thirteen Threaded Bottom Brackets

Bearings feature high performance seals and custom grease specification for top-notch durability and smooth spinning

e*thirteen threaded BBs cannot be used to retrofit a BB30 crankset onto a BSA threaded frame

Large custom sealed 6806 bearings are replaceable and serviceable