Rotor Universal Bottom Brackets are designed to provide an easy yes to the question - is this bottom bracket compatible with my frame and crank? BB1 bottom brackets are designed to work with straight 24mm spindled cranks and BSA threaded bottom brackets.

• For all 24mm straight spindled (RaceFace, Shimano, FSA, etc) cranks with BSA threaded BBs
• Labyrinth seals prevent bearing contamination
• Spindle Interface Type: Shimano Hollowtech II , FSA MegaExo , FSA MegaExo Light , RaceFace EXI
• BB Shell Width (mm): 68 , 73
• Bottom Bracket Shell I.D.: 1.37
• BB/Frame Interface: English