The Rotor PF4129 bottom bracket is designed to improve the efficiency of the SRAM DUB crankset and eliminate excessive noise and creaking using high quality steel bearings.
Specifications of the Rotor PF4129 bottom bracket
Pressfit
steel bearing
2 rows of balls in each bearing cup
compatible with SRAM DUB cranks
compatible with BB86 | BB89 | BB92 frames
