BSA Bottom Bracket

Wolf Tooth BSA Bottom Brackets are built for smooth, durable, and low-drag performance in all conditions. Featuring custom bearings, seals, and bushings, they prevent creaks and balance excellent weather sealing with optimized alignment and preload. The hardened chrome steel bearings with ACOSUR ZNA coating offer greater durability and corrosion resistance than stainless, while minimizing noise and drag. Compatible with 24mm Shimano, 29mm DUB, and 30mm spindles, and available in four colors to match your Wolf Tooth setup. Compatible with 24, 29 DUB, and 30mm spindle cranksets Adjustable-width sleeve fits 68mm - 73mm BSA bottom bracket shells Best-in-class weather sealing protects bearings from water, mud, and debris Custom polymer spindle bushings eliminate creaking Installation and removal with standard 44-16 (24mm) and 46-12 (29mm DUB, 30mm) spline tools Engineered, machined, and assembled at Wolf Tooth HQ in Minnesota, USA Replacement parts and service guides are available via Wolf