Bottom brackets

Shimano Shimano SM-BB71-41C Bottom Bracket

Press-fit 104.5 / 107 mm

Compatibility: reviewed

Known specifications can be used by the compatibility engine.

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Technical review: Jul 31, 2026
Compatibility review: Reviewed Jul 31, 2026

Approved technical sources

Shimano HOLLOWTECH II MTB bottom-bracket specificationsManufacturerSource checked Jul 30, 2026Evidence reviewed Jul 31, 2026
Shimano crank and bottom-bracket compatibility C-449ManufacturerSource checked Jul 30, 2026Evidence reviewed Jul 31, 2026
Shimano current MTB component ordering catalogManufacturerSource checked Jul 30, 2026Evidence reviewed Jul 31, 2026

Technical data

Specifications

Supported BB shells: Pf107
Supported crank spindles: 24mm