James Dean designed JDJetting kits so you don't have to be an expert to get professional high performance results. Even better, technical support is provided. The James Dean custom jetting kit is designed to improve throttle response throughout the range by using specially made multi-taper needles. These are based on the most popular settings used by new generation MX and off-road riders around the world and the results are impressive. Key Features Outperforms standard 2-stroke and 4-stroke jets. Includes main jets, custom multi-taper needles and needle clip.