James Dean designed the JDJetting kits so that 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 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....

Getting rid of that BST-CV and going with a 41mm FCR-MX on your LC4 powered KTM?  This is the jetting kit to make it run sharp right out of the shop!