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 globe and the results are impressive.

• Exceeds the performance of the popular EMN, DTM, and other standard factory needle options
• Low and High altitude custom designed triple taper needles
• Main Jets included
• Spare Needle Clip
• Dyno Tested
• Developed and tested from sea level to 12000ft elevation
• You can’t buy this from any OEM factory or aftermarket. It’s JD’s prescription for the headpipe blues.