8109 Thunderslide cv kit

The Dynojet Thunderslide kit is a benchmark in carburetor tuning, specifically designed for US Stage 1 applications. Unlike standard jet kits, the Thunderslide includes a custom-made throttle slide with a unique profile that allows for precise control over the slide's movement. This creates a much stronger signal at the needle, which significantly improves fuel atomization. The result is a cleaner burn, more power, crisper throttle response, and even improved fuel economy. This kit is sold as a kit and is intended for 1989 to 2003 XL1200 Sportster models, though it excludes the 1200S. It is the professional's choice for getting the most out of a stock CV carburetor setup.