Shimano Bottom Bracket
3 models, 5 verified variants. Only rows checked against Shimano’s own page are listed.
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec. A cell marked not stated is a field the maker does not publish, so nothing here checks it.
| Model | Variants | Shell | Spindle | Price (MSRP) |
|---|---|---|---|---|
| Shimano BB-RS500 | 3 | Fits a bsa-road bottom-bracket shell (on 2 of 3 variants); Fits a bb86 bottom-bracket shell (on 1 of 3 variants) | Takes a 24mm-road crank spindle | $22.00 to $28.00 |
| Shimano SM-BB52 | 1 | Fits a bsa-road bottom-bracket shell | Takes a 24mm-road crank spindle | $35.00 |
| Shimano SM-BB72-41B | 1 | Fits a bb86 bottom-bracket shell | Takes a 24mm-road crank spindle | $30.00 |
Source for every row: Shimano’s own product pages, last checked between 2026-07-21 and 2026-08-15.
The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.