This bottom bracket will fit a 386EVO or Rotor 30mm crank on a Cervelo frame. No adapters, just press the cups, plug in the cranks and go play. For Rotor crank sets, please note that Rotor makes custom crank sets for Cervelo that are specific to BBRight. This bottom bracket is only for after market Rotor crank sets. If your crank set came on a complete bike, you need our PF30 bottom bracket . If your Rotor was bought separately from the frame, you came to the right spot. If your Cervelo is a model year 2023 or later, your frame might have a threaded version of BBRight. You will find these bottom brackets under T47Asymmetric in the dropdown. Choose road bearings for road bikes, cross bearings for gravel and cyclocross or if you frequently ride your road bike on wet roads.