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The Shimano Bottom Bracket BSA 122.5/68mm 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 and a 68 mm shell width, it is compatible with many road, trekking, hybrid, and mountain bike frames that use square-taper or compatible cranksets. Shimano’s proven bearing quality helps reduce friction and improve durability, so your cranks spin freely and consistently, ride after ride.
This bottom bracket is an excellent choice for refreshing an older bike, completing a drivetrain overhaul, or building up a dependable everyday commuter. The 122.5 mm axle length is a common specification that works with many triple and double cranksets, helping you achieve proper chainline and shifting performance. Easy to install with standard tools and straightforward to maintain, it offers a cost-effective upgrade that restores stiffness and responsiveness to your pedaling. Whether you are replacing a worn-out unit or finishing a custom build, the Shimano Bottom Bracket BSA 122.5/68mm delivers the dependable performance and longevity riders expect from Shimano components.
