Rotor Universal Bottom Brackets are designed to provide an easy yes to the question – is this bottom bracket compatible with my frame and crank? UBB PF4130 bottom brackets are designed to work with 30mm spindled cranks and 41mm pressfit inner diameter bottom brackets.

• Rotor Universal Bottom Brackets are designed to provide an easy yes to the question – is this bottom bracket compatible with my frame and crank? UBB PF4130 bottom brackets are designed to work with 30mm spindled cranks and 41mm pressfit inner diameter bottom brackets.
• Press fit bearings for 41mm shells such as BB86, BB89 and BB92