Bottom Brackets
5 bottom brackets with verified specifications and live pricing. Each entry lists the drivetrain speeds and freehub standards it is compatible with, so you can check fitment before you buy.
| Component | Speeds | Freehub | From |
|---|---|---|---|
| Shimano BB-UN300 (Square Taper)Square taper cartridge BB, BSA threaded, 68mm, common spindle lengths | — | — | $18.00 |
| Shimano BB-MT501 (BSA)Threaded BSA 68/73mm external bearing BB, 24mm Hollowtech II, alloy cups | — | — | $19.95 |
| Shimano BB-MT500 (BSA)Threaded BSA 68/73mm external bearing BB for 24mm Hollowtech II | — | — | $20.95 |
| SRAM DUB BSA Bottom BracketThreaded BSA 68/73mm BB for DUB 28.99mm spindle cranks | — | — | $35.95 |
| Wheels Manufacturing BSA Threaded BB (24mm)Threaded BSA BB, angular contact bearings, for 24mm Shimano cranks | — | — | $125.95 |
Speed and freehub compatibility comes from each component's recorded specification. A dash means no restriction is recorded for that part, not that it fits everything — check the individual component page.