T47 threaded BB cups for T47 frames and 30mm diameter spindle cranks
Cups have internal bearings, and can be used in BB shells with widths from 68mm to 132mm
Machined aluminum cups thread together directly into a T47 BB shell
Bearings are easily serviced or replaced
Includes sleeve to fit between cups for added protection from dirt and grime, and also keeps your internal wires and hoses from rubbing on the crank spindle