Rotor BSA 30 MTB

SHORT DESCRIPTION
Versions: BSA30 68-73mm ceramic red - 96g BSA30 68-73mm steel black - 89g
Material: aluminum alloy 7075 100% CNC-machined. Silicone seals
Compatibility: Designed to work with BSA threaded bottom brackets and 30mm axle ROTOR cranksets. 
Discipline: MTB

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 BSA 30 is the "yes" component to "Is this compatible with my English-threaded BB shell for a 30mm axle?"

https://rotorbike.com/catalog/default/rotor/road/bottom-brackets/bsa/bsa-30-steel.h