8112 Thunderslide CV kit, US models. Stage 1

The Dynojet Thunderslide kit for US Stage 1 applications is a significant upgrade over standard jetting. By replacing the factory slide with a custom-profiled Thunderslide, this kit allows for much more precise control over the carburetor's slide movement. This creates a stronger vacuum signal, which improves fuel atomization for a more efficient burn. You will feel the difference in throttle response and see it in the power gains and improved fuel economy. This kit is sold as a kit and is specifically designed to fit 1998 to 2003 XL1200S Sportster models. It is a professional-grade solution for riders who want their CV carburetor to perform at its absolute peak.