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Your cart is empty.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. You can't buy this level of performance from the OEM factory or other aftermarket suppliers. JD's testing and research will provide the performance you need. Exceeds the performance of standard 2-stroke and 4-stroke jetting, and other 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 12,000 ft elevation.
Damian Posey
Reviewed in the United States on July 15, 2021
Easy install. Made the bike wake up a little and start much better. Crf150r
Timothy S. Green
Reviewed in the United States on June 7, 2021
This Jetting kit was amazing. My bike took about 60 kicks to cold start it. The bike had engine popping and tons of other problems. This Jetting kit fixed all of that. I could not recommend this anymore. 10/10 would completely recommend👍.
stacy insani
Reviewed in the United States on July 28, 2019
Great product!! I just bought my bike and it wouldn’t run for crap. So I bought this jet kit.. worked just like it’s supposed to. Easy to follow instructions..
Minitwatch
Reviewed in the United States on May 15, 2011
I got a 2009 CRF150RB to use a trail bike. In it's stock form, it is in my opinion, the worst bike you can get to ride trails. It's crazy powerful, has a short wheel base, is extremely loud and is finicky. Starting the bike was always difficult. Once I did get it going, it would shut off. I had to do this process a few times before It would stay on. It was as if it was jetted for 20,000 feet. Deceleration pop was outrageous. The bike would stall out all over the place and usually at the most unfortunate times such as on the side of a steep mountain single track. It also would overheat quite easily in tight woods. There was also a lot of bogging.After researching the issue I purchased a Wurtz AP cover. That helped a little bit but still did not solve anything. I then installed a flywheel weight which helped with starting the bike and stalling but that too did not solve anything. Finally, I got the JD kit. The instructions were easy to read and understand. I had the kit installed in a few minutes. I sent the bike to the shop before I had a chance to test it but I got it back (in one day!) and WOW. What a change. It starts SUPER easily and does not shut off. It just stays on. It idles smoothly and throttle response is tight. There seems to be a lot more power but that may just be my "butt dyno". There is next no more deceleration pop! I've also installed an FMF Q4 exhaust which may have something to do with but probably more so due to the JD kit.In conclusion, The JD kit is an ABSOLUTE MUST. Any future bike that I get will have the JD Jetting kit as it's first mod should it need it. If you are having issues starting your bike, keeping it on, popping, overheating and bogging, get the JD BEFORE you try anything else. You will most likely be amazed.Ride on
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