This bottom bracket will fit a Shimano crank on a Cervelo frame. No adapters, just press the cups, plug in the cranks and go play. 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.