The standard kit comes with 40-42-44mm cams which you can switch between. We made a short production of larger cams for the ADR race team but it is exclusively used on the AMA bikes currently. A good thing about our kits is that we sell additional throttle tubes separately. Also, it comes with additional cables so should anything happen to them you can still put your stock ones back on, or get additional cables later on. A few of the CVMA 250 racers are using the CP throttle since NKB Motorcycles is sponsoring the CVMA 250 class and offering them up at a larger discount.