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The Shimano Bottom Bracket BSA 118mm/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, urban, trekking, and older mountain bike frames that use this common interface. The 118 mm axle length is well suited to a variety of cranksets, helping you achieve proper chainline and dependable drivetrain performance.
Built with Shimano’s proven bearing quality, this bottom bracket offers durable, low-friction rotation for everyday riding, commuting, or training. The sealed cartridge design helps keep out water and dirt, reducing maintenance needs and extending service life, even in wet or gritty conditions. Whether you are refreshing a worn-out drivetrain or completing a classic build, this BSA bottom bracket provides a straightforward, secure fit and the dependable function riders expect from Shimano. It is an excellent choice for riders seeking a cost-effective, long-lasting solution for square-taper style crank compatibility.
