Gain huge throttle response, awesome grunt and great power with our new billet head kit for the 2007-08 600 CFI and Carb motor. Fits all 2007-08 600 exhaust valve motors and works with premium pump gas. This kit replaces the stock head with a billet head cover for better cooling and uses interchangable domes. You will notice an instant improvement in how fast the motor revs and responds. 4-5 horsepower gains though out the power band for flat landers and 6-8 horsepower gains for high altitude applications. Easy bolt on performance!! Please choose high or low elevation below when ordering