Bottom Bracket Standards
Use this reference to identify shell type and spindle interface requirements before selecting a crank and BB combo.
| Standard | Type | Typical Width |
|---|---|---|
| BSA | Threaded | 68/73mm |
| T47 | Threaded | 68/86mm |
| PF30 | Press-Fit | 68/73mm |
| BB86 | Press-Fit | 86.5mm |