Bottom brackets
Shimano Shimano SM-BB80 Bottom Bracket
BSA 83 mm
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
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Catalog trust
Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- 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
- BSA-83
- Supported crank spindles
- 24mm