The James Dean custom
jetting kit is designed to improve throttle response
throughout the range by using specially made
multi-taper needles. These are more highly developed
and fine-tuned than stock jetting parts. Low and
High altitude custom designed triple taper needles.
Main Jets included, Spare Needle Clip, and 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.