Shell Bb92 vs Shell Pf30a: specs compared
Updated 05 September 2026.
4
specs differ
Shell Bb92 and Shell Pf30a differ on 4 specs: shell inside diameter, shell width, thread, crank spindles it hosts.
| Spec | Shell Bb92 | Shell Pf30a |
|---|---|---|
| Type | press fit | press fit |
| Shell inside diameter | 41 mm smooth press-fit bore | 46 mm smooth press-fit bore |
| Shell width | 91.5 mm and 92 mm | 73 mm (asymmetric, for Cannondale Ai offset rear) |
| Thread | none, two cartridge bearings in plastic cups press into the 41 mm bore | none, cups press into the 46 mm bore |
| Crank spindles it hosts | 24 mm Shimano Hollowtech II and 24/22 mm SRAM GXP natively; 28.99 mm DUB via a DUB BB92 unit | 30 mm native; 24 mm Shimano and 28.99 mm DUB need a reducer |
Questions and answers
How do Shell Bb92 and Shell Pf30a compare?
Shell Bb92 and Shell Pf30a differ on 4 specs: shell inside diameter, shell width, thread, crank spindles it hosts.