Rotor Bottom Bracket BSA
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UBB System for BSA frames
Encompassing all Bottom Brackets Standards
The UBB is simple: It fits everything. BB1 BSA and SABB BSA for 24 mm. spindle. And BSA 30 for 30 mm. axle.
The UBB is a concept that encompasses and works with ALL BB standards, forever eliminating complicated BB/Crank compatibility problems. There is always a UBB crank to fit your bike irrespective of its BB type. What’s more, there is almost always an unexpected UBB30 upgrade solution for non 30mm frames!
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