BB30A-24 for Rotor 24mm cranks Bearing Type:Ceramic Bearings This design also emphasizes gravel

This design also emphasizes gravel worthiness and chain retention

this oversized derailleur cage system gives you the edge where it counts—whether you’re racing

We can make it fit on 11 speed and on mechanical derailleurs with some additional parts

Select cross bearings for best durability and off road use

BB30A-24 for Rotor 24mm cranks Bearing Type:Ceramic Bearings This design also emphasizes gravelThis bottom bracket fits any Rotor 24mm crank on a BB30A frame. BB30A is an asymmetric bottom bracket found on older Cannondale frames: Synapse and CAAD12. To install a Cannondale crank on any of these bikes, choose a standard BB30 bearing set. Choose road bearings for road bikes, cross bearings off road use or if you frequently ride on wet roads.