Shell Pf30a vs Shell Bb95: specs compared
Updated 05 September 2026.
4
specs differ
Shell Pf30a and Shell Bb95 differ on 4 specs: shell inside diameter, shell width, thread, crank spindles it hosts.
| Spec | Shell Pf30a | Shell Bb95 |
|---|---|---|
| Type | press fit | press fit |
| Shell inside diameter | 46 mm smooth press-fit bore | 37 mm smooth press-fit bore |
| Shell width | 73 mm (asymmetric, for Cannondale Ai offset rear) | 95.5 mm |
| Thread | none, cups press into the 46 mm bore | none, cartridge bearings press straight into moulded carbon seats in the 37 mm bore |
| Crank spindles it hosts | 30 mm native; 24 mm Shimano and 28.99 mm DUB need a reducer | 24 mm Shimano Hollowtech II; the 37 mm bore is too small for a 30 mm spindle |
Questions and answers
How do Shell Pf30a and Shell Bb95 compare?
Shell Pf30a and Shell Bb95 differ on 4 specs: shell inside diameter, shell width, thread, crank spindles it hosts.