The Thunderlide CV carburetor new calibration kit for Harley Davidson Dyna [1999-1999] offers a comprehensive solution to optimize engine power. The kit includes an innovative, lightweight slide that improves the reaction time of the gas train and lowers fuel consumption. Different main nozzles, a equal pressure membrane, a needle, a injection nozzle, a accelerator pump ball, a mixed pipe, drill for adjustments and safety clips are included. An assembly kit and detailed instructions for the installation and fine adjustment of the carburetor are also included.