Rotor BSA & ITA30 Thread for 24mm Spindles

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You think that your bike's performance features could be enhanced with components selected á la carte at your local bike shop — and that you should be able to accomplish this despite the spawn of deviant bottom bracket "standards" that have created component compatibility issues. Conventional threaded bottom brackets like your English-threaded BB shell shouldn't foil plans to upgrade your ride. ROTOR conceived its Universal Bottom Bracket (UBB) concept to eliminate the complicated bottom bracket/crank compatibility challenge that has increasingly frustrated the mechanics at your LBS. The BB1 BSA is the "yes" component to "Is this compatible with my English-threaded BB shell with a 24mm axle?" 


BB1 68mm BSA road ceramic black - 91g
BB1 68mm BSA road steel black - 93g 
BB1 68/73mm BSA mtb ceramic black - 97g
BB1 68/73mm BSA mtb steel black - 100g


  • - Designed to work with BSA threaded bottom brackets 
  • - 100% CNC-machined, 7075 aluminum
  • - Labyrinth seals prevent bearing contamination
  • - Designed to work with ROTOR and Shimano 24mm cranksets