The Shimano Bottom Bracket BSA 68mm/126mm is a reliable, threaded bottom bracket designed for classic BSA (English) frames. With a 68 mm shell width and a 126 mm axle length, it is ideal for many older road, trekking, and city bikes that use square-taper cranksets. Shimano is known for smooth-running bearings and long-lasting performance, making this bottom bracket a solid choice for refreshing a worn drivetrain or completing a restoration project.
This unit is built to handle everyday riding, from commuting to weekend tours, offering consistent support for your crankset and efficient power transfer. The BSA threaded standard is widely used and easy to service, which means installation and future maintenance are straightforward for most home mechanics and bike shops. Whether you are upgrading tired components or bringing a vintage frame back to life, the Shimano Bottom Bracket BSA 68mm/126mm delivers dependable function, compatibility with many square-taper cranks, and the trusted quality associated with Shimano drivetrain parts.