T47A Asymmetrical threaded BB cups for T47A frames and 30mm diameter spindle compatible cranks.
Cups have internal bearings, and can be used in BB shells with widths from 77.5 – 79mm.
Includes sleeve to fit between cups for added protection, and also keeps your internal wires and hoses from rubbing on the crank spindle. Use a quality grease when installing in steel or aluminum BB shells, and an anti-seize compound compatible with titanium BB shells.

T47 external cup on the drive side
T47 internal cup on the non-drive side

Compatibility:
Cervelo T47A 79mm shell width
Factor T47A 77.5mm shell width
Felt T47A 77mm shell width