Wheels Manufacturing T47A to 24mm Bottom Bracket w/ABEC-3 Bearings

The Wheels Manufacturing T47A to 24mm Bottom Bracket is built for frames that use the T47 threaded shell standard — specifically those with the narrower T47A shell found on certain road frames from Cervelo, Felt, and Factor. Machined aluminum cups thread directly into the shell using a familiar BSA-style interface: left-hand thread on the drive side, right-hand thread on the non-drive side. That threading convention means installation is straightforward, and there's no press fit to worry about.

Inside each cup, ABEC-3 rated bearings are designed to be serviced or swapped out without replacing the whole unit — a practical advantage over integrated designs that treat the bottom bracket as a disposable part. A sleeve sits between the cups to close the gap against cable and hose contact and to keep dirt and grime out of the bearing interface. The result is a bottom bracket that fits 24mm spindle cranks and holds up to regular use without demanding much attention.

Wheels Manufacturing T47A to 24mm Specs at a Glance

• Shell standard: T47A (threaded)
• Spindle compatibility: 24mm
• Cup material: Machined aluminum
• Bearing grade: ABEC-3, serviceable
• Threading: BSA-style — left-hand drive side, right-hand non-drive side