This asymmetric bottom bracket is found on 2022 and older Cannondale carbon frames. It fits a Sram DUB crank sets on a PF30A frame. PF30A is an asymmetric bottom bracket found on Cannondale carbon frames: SuperSix Evo, SystemSix and Slice. To install a Cannondale crank on any of these bikes, choose a standard PF30 bottom bracket. Choose road bearings for road bikes, cross bearings for off road use or if you frequently ride on wet roads.