Shimano Deore Bottom Bracket – BB-MT501 (Hollowtech)

Shimano BB-RS501 bottom bracket

The Shimano Deore BB-MT501 is a high-quality threaded bottom bracket built for Hollowtech II cranksets. Designed to withstand the rigors of trail, XC, and all-mountain riding, it features durable sealed cartridge bearings, steel cups, and improved seals for long-lasting performance in wet and muddy conditions. Ideal for bikes with 68/73 mm BSA threaded bottom bracket shells, it ensures smooth, efficient pedaling and easy installation.

• Compatible with Shimano Hollowtech II cranksets

• Fits 24 mm spindle road and MTB cranksets

• Threaded BSA (1.37" x 24T) bottom bracket shell

• Shell width compatibility: 68 mm and 73 mm (with spacers)

• Compatible with most Shimano Deore / SLX / XT / XTR MTB cranksets

• Also works with other brands using 24 mm Hollowtech II interface (e.g. FSA MegaExo, Race Face X-Type with adapter)

• Not compatible with Press-Fit (BB92, BB86) bottom bracket shells

• Sealed cartridge bearings for smooth performance

• Designed for MTB, XC, Trail, and All-Mountain use

• Enhanced sealing for mud and water resistance

• Approx. 93 grams, includes spacers for shell width adjustment