James Dean designed the JDJetting kits so that you don’t have to be an expert to get professional high performance results!!
The James Dean custom jetting kit is designed to improve throttle response throughout the range by using specially made multi-taper needles.
Exceeds the performance of other standard factory needle options and technical support is provided.
Low and High altitude custom designed triple taper needles
Extra genuine Keihin main jets and needle clip included
Accelerator pump orings included for better off idle response
Includes main jets, custom multi-taper needles and needle clip.
ONLY fits Keihin FCR MX 39mm carb
