Bottom bracket Shimano SM-BB71 MTB 83 mm

This bicycle bottom bracket is designed for riders looking for a reliable and smooth-running heart of their drivetrain. Built for Hollowtech-style axles, it delivers efficient power transfer with every pedal stroke and keeps your cranks spinning freely mile after mile.

With a BSA threaded interface and an 83 mm frame width, it offers a secure, well-matched fit for compatible frames. The sturdy construction is made to withstand daily riding and demanding conditions, making it a dependable choice for maintaining or upgrading your bike.

• Compatible with Hollowtech axle cranksets
• BSA threaded installation for a secure fit
• 83 mm frame width
• Smooth, efficient rotation for reliable power transfer