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The Shimano Bottom Bracket BSA 68mm/73mm is a reliable, threaded bottom bracket designed for smooth, efficient power transfer on a wide range of bikes. Using the classic BSA (English) thread standard, it fits most modern MTB and many road or hybrid frames with 68mm or 73mm bottom bracket shells. Shimano’s proven bearing quality and sealing help keep out water and dirt, reducing friction and extending service life, even in demanding riding conditions.
This bottom bracket is ideal for riders upgrading a worn-out unit or completing a new build with a compatible Shimano crankset. The threaded design makes installation and maintenance straightforward for home mechanics and professionals alike, while the robust construction ensures consistent performance over many seasons. Whether you ride cross-country trails, commute year-round, or enjoy weekend road loops, the Shimano Bottom Bracket BSA 68mm/73mm delivers dependable support for your drivetrain, helping you pedal more smoothly and confidently every time you get on the bike.
