ROTOR bike U4630 to PF30 Threaded Bottom Bracket
Description
The drivetrain masters are back at it again with their Rotor U4630 to PF30 Threaded Bottom Bracket (Steel Bearings). Compatible with PF30 bottom brackets, the Rotor Universal 4630 eliminates many issues associated with other bottom bracket designs by improving bearing alignment and increasing bearing shell stiffness.
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