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JD Jetting Jet Kit
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JD Jetting Jet Kit

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  • "Customer service is priority #1 at Rocky Mountain ATV/MC. We value our customers and strive to be the best shopping experience- when you buy from us, you are buying lifetime service."

    -Dan Thomas, CEO and Founder

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  • 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.
  • 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, 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.

JD Jetting Jet Kit Reviews

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0 of 0 people found this review helpful.

Change main jet first (before needle)

Comments On Aug 05, 2014:Put this on my 2007 crf250x used 160 main, used the 42 it was same as stock but put new one anyway The red needle on 5th from top would only fit once the main jet was changed (stock was 130). did modified air box mod, removed screen on air filter, twin air filter, removed baffle from exhaust pipe. Also boysen quick shot 3. also put quick adjust fuel screw. turned fuel screw 2 1/2 out. took better part of a hot august day to complete. It was well worth the time and money. Took bike out around yard front tire comes up easier, more bottom end power and less bog look forward to a long ride. make sure to read all of instructions as my carb was an alternate instruction

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0 of 0 people found this review helpful.

Ultimate BLOB stopper

Comments On Aug 05, 2014:The cr 125 for 2000/2001 are some of the worst jetted bikes in history from the factory, Im almost sure of it. Ive tried for a long time to get the jetting right, from high altitudes to hot and cold climates... and I could never get it quite right through its entire range. These are notoriously FAT from the get go. The JD Jet kit seems REALLY EXPENSIVE for a couple needles and jets (probably about $28 in parts from sudco... BUT, they nailed the recipe with the taper on the needles and easy tuning instructions for those who need em. Not many times I think something is worth full retail... BUT, this is!

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Comments On Aug 04, 2014:I ordered this part on a Saturday and it came on Monday even though I selected 3 day shipping. I had trouble trying to get the jetting right on my cr125 and I was hesitant buying the jd jet kit because of the price but I ordered it and I don't regret it, the instructions were very simple and straight forward and it ran great after the 25 minutes it took to install. I highly recommend this product if you are having trouble jetting your bike or just want some more power and better throttle response.

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JD Jet kit

Comments On Jul 15, 2014:Like other reviews, this jet kit is top notch. I live in Utah at my elevation is ~4500 feet above sea level. This kit helped out great with jetting issues. However, as others have mentioned this kit is extremely overpriced.
With that said, I would buy it again as it is the best option for quickly setting up your jets,

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Just What I Needed

Comments On Jul 12, 2014:This kit is better than the GYTR kit. The JD kit includes all of what you need to make it work for you and your riding style !!

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2 of 2 people found this review helpful.

Fixes it. . .

Comments On Jun 16, 2014:Thank God for this being in stock.
I bought a new '14 bike that ran aweful off of the floor with the factory jetting.
Rocky Mountain & JD saved the day. I had it running well within 25 minutes with this kit & the included directions.

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felt like it gave my bike fuel injection...

Comments On Jun 12, 2014:This kit is needed to make your wr250f run the way the are supposed to run...felt like the kit made my bike fuel injected!!!! Also i used the AIS removal kit and installed the quickshot3...the instructions were super easy...

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Jetting Kit

Comments On Jun 10, 2014:Great kit, best money I have spent on my bike.

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2 of 2 people found this review helpful.

great product

Comments On Jun 08, 2014:purchased to increase the mpg and go ride in high elevation. Works great if you set it to recommended settings for the temp and feet above sea level. i am very pleased with my purchase and would buy it again. The kit made my bike run perfect way better response and a very crisp feel. It is expensive but well worth the money, it does the guess work for you.

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1 of 1 people found this review helpful.

Great Product!

Comments On May 25, 2014:Don't mess with the jetting chart in your manual only to get mediocre results. Buy one of these kits and take all the fiddling out of the jetting/tuning process.

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