Keihin CV Carb jet kit for Sportster/Big TwinKeihin CV Carb jet kit for Sportster Big Twin Eliminate that annoying spit that is normally associated with the Keihin Constant Velocity (CV) carburetor. The CV is a good performing carburetor when tuned in to your custom exhaust, high performance ignition, high flow air filter or when you raise the compression ratio. This tuners kit includes 5 main jets, sizes 150, 160, 170, 180 & 190 and features an adjustable mid range needle. Instructions are