JD Jetting Jet Kit

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JD Jetting Jet Kit
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JD Jetting Jet Kit

Our Price: $71.99$98.95

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Additional Videos

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Details

    With a jetting selection sampled from the most popular settings and well known riders from all over the world, the JD Jetting Jet Kit is designed to give you pro-level performance without having to be a carburetor expert.

    This jet kit will deliver reliable fueling, but with the inclusion of multi-taper needles, you’ll also get adjustability for low and high altitudes. See the difference in performance you’ll get over stock with a JD Jetting Jet Kit.

    Specs:
  • Expert tuning setup without being an expert
  • Improves throttle response with multi-taper needles
  • Taken from the most popular riders and settings for MX and off road
  • Exceeds performance of popular EMN, DTM, and other standard factory needle options
  • Low and high altitude designed triple taper needles
  • Main jets include spare needle clip
  • Dyno tested for proven gains
  • Developed and tested from sea level to 12000ft elevation
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

JD Jetting Jet Kit Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.7 / 5.0
292 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
245
28
6
5
8
Value
4.5 / 5
Durability
4.8 / 5
Ease of Installation
4.7 / 5
Fitment
4.9 / 5
Performance
4.7 / 5
Recommend it?
Yes (179)
No (5)
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
4 / 5
Recommend it?
Yes
Pretty good
Easy installation and easy instructions to follow. It made my bike run a lot better. 4 stars because it's still a tad rich. But I would recommend because it's a lot cheaper than a lectron and has close to the same results.

-m-2019 HUSQVARNA TE 150--
August 7, 2019
escalante, UT, US
Purchased
2 weeks ago
Value
5 / 5
Durability
4 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great kit
The highest recommended jet kit out there for a reason. JD jet kits have great needles for all areas of riding. Instructions are very well written. I've had great results cleaning up a rich carb with OEM settings. For the price, I was disappointed that the pilot jet wasn't a genuine Mikuni jet. The main jet was a genuine Mikuni part though.

-m-2007 HONDA CR250R--
July 29, 2019
Dover, DE, US
Purchased
over 4 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Awesome
Unbelievable improvement in performance. O run the leaner setting on the needle and I get way better fuel mileage. Went out 70 miles first trip after installing it and had plenty of gas to spare on stock 3 gal tank. Awesome
July 6, 2019
Pinelands, NJ, US
Age: 25-44
Purchased
4 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
150xc
Took the flat spot out of the bottom of my 150xc. Very happy with the kit.

-m-2012 KTM 150 XC--
June 28, 2019
Cleveland , OH, US
Age: 25-44
Purchased
2 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Ease of Installation
4 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
jd jet kit for 2017 KTM 300xc
Although I had my jetting close, still had a bobble off idle. Ordered the JD Jet Kit & followed there instructions. First tried the red needle & seemed to lean. Switched to the blue needle (at there recommended clip position for my altitude) and bike seems to finally be perfect!

-m-2017 KTM 300 XC--
June 18, 2019
Greentown, PA, US
Age: 45-64
Purchased
2 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
JD jet kit for 2019 300XC
Put a JD jet kit in my son’s 250xc & it made a huge difference. Actually ordered this one from Rocky Mtn before I even picked up my 2019 XC 300

-m-2019 KTM 300 XC--
June 11, 2019
Tacoma , WA, US
Age: 45-64
Purchased
3 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Just what my 2018 Beta 300RR needed!
My beta came too rich for the northeast states. The JD kit really straightened things out. Much more crisp and doest 4 stroke anymore. 1/4 to 1/2 throttle gurgle is gone. On the pipe it sounds great and pulls a lot better too. The only thing I altered was the needle clip recommendation that was in the instructions. Other than that everything is spot on.

-m-2018 BETA 300 RR--
June 6, 2019
19605, PA, US
Age: 25-44
Purchased
4 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
4 / 5
Recommend it?
Yes
Easy to install even for a beginner
Ever since I started riding two strokes I been nervous to fiddle with jetting I always left everything stock. This kit makes it really easy to properly jet your bike. My bike ran pretty good when I wasn't doing single track but I avoided very technical slow tracks because I was afraid I would foul a plug due being a little to rich. off. I was even going to order a Lectron to not have to worry about jetting, but the JD jet kit did the trick and was very easy to install. I rode in my back yard and did some testing and ran much better at small throttle openings. It feels a bit snappier and doesn't stall when I am hard on the rear brake. If you have experience you could most likely get you on seeings right with out this kit but this get makes things very easy just about anyone

-m-2016 YAMAHA YZ250X--
All jetted and ready to ride
All jetted and ready to ride
May 18, 2019
Atlanta, GA, US
Age: 25-44
Purchased
3 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
A Must Have
My son's bike was hard to start and wouldn't idle well until it was warmed up. I bought and installed this jetting kit which was simple to do with the included instructions. After it was installed the bike started on the second kick and idles like a dream. No further tinkering was needed. If you are looking at buying a jetting kit, get this one.

-m-2014 HONDA CRF150R--
May 7, 2019
Manassa, CO, US
Age: 25-44
Purchased
4 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Ease of Installation
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
One of the best mods you can do to improve overall power.
Instead on 2019 ktm 300xc. The bike runs perfect know.

-m-2019 KTM 300 XC--
April 20, 2019
02919, RI, US
Age: 45-64
Purchased
5 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 17 questions Browse 17 questions and 47 answers
What size jets does this kit include? Is it just the stock set or are there options for re jetting?
Robert M on Sep 25, 2016
BEST ANSWER: The kit will include the stock jet sizes and in most kits (depends on the machine) it will usually include one or two jets close to the stock size for re jetting.
Does this kit come with leak Jets and what sizes if it does. I would be purchasing it for a 01 wr250f?
Aaron M on Feb 24, 2018
BEST ANSWER: Suggest you go to the JDJetting webpage for specific contents of a JFY003 kit
Does Rocky offer the JD jet kit for a 2017 Beta Xtrainer?
A shopper on Jul 24, 2017
BEST ANSWER: Unfortunately, we are not carrying the JD Jetting kits for this machine. However, I will send your suggestion to our purchasing department for consideration.
I have an aftermarket pipe, how do I account for that in the kit?
kelly C on Feb 6, 2017
BEST ANSWER: There are multiple variations allowed with the kit. Follow the instructions for altitude etc., they should be close. You might have to do some testing to fine tune your jetting but it won't take long. I have an aftermarket pipe and am at altitude (Wyoming). I followed the instructions but had to fine tune (lean out) my jetting as the recommended settings were a little rich.
Will this work with a keihin carburetor on my 2004 YZ250?
A shopper on Feb 23, 2017
BEST ANSWER: I can say for a fact that it will work on almost all the CR series carburetors that are found on all of the 450s of that time frame (some mods need to be completed on the California carbs). It will possibly work on yours as well, but it is a smaller carb. I would suspect that the jet selection in the 450 kit would be a bit on the large size, and I'd be particularly concerned about the needle profiles contained. They may also fit, but may be too long, or not have the right shape. That is assuming that you are talking about the YZF250 (4 stroke). If you actually have a YZ 250 (2 stroke), that is a totally different carb than the kit you are referring to. I bought one for a 2007 CRF450X from Rocky Mountain ATV/MC, which is why this question was directed to me. In short, I would say NO. This is not the right kit for you. I would get on line, and look up JDJetting dot com, tech at jdjetting dot com, or call them at the number on their website. (I am not allowed to include email addys. or phone #s in this reply) They will direct you to the correct product from their line, which is most likely also available from Rocky Mountain ATV/MC. I hope this helps. Good Luck!
Hanging idle issue. I have an 2018 KTM 300 XC-W with a JD kit installed. Red needle, 3rd clip position, 420 main, 1 1/2 turns out on the air screw. VForce Reed kit installed and FMF turbine core 2 pipe. The issue I'm having is with a hanging idle. Any thoughts? I'm thinking I may need to richen up the mixture a bit ( possibly move the clip position down one ) and retry.
ANDRE M on Mar 31, 2018
BEST ANSWER: It could be throttle tube, or cables binding; check that eveything is lubed, & moving freely. It may also be your slide sticking inside the carb, due to build up, dirt, or wear. Some slides even have a rubber vacuum seal on them; check that. See if you can close the throttle by hand by turning the grip all the way forward. If the linkage is all the way bottomed on the idle adjustment screw, and it still is at a high rpm, you may have a lean condition, or an intake air leak.
What difference is there with buying this kit vs. just jetting my bike myself? Are the needles that much better than oem? 06 Yz250.
RANDY H on Sep 11, 2017
BEST ANSWER: I used it on a 07 Honda crf450r and it popped. After contacting the company, they offered no more guidance than was listed in the instructions. I took it to a Honda mechanic and he jetted it. It ran pretty good with the kit in, but it popped and it annoyed me. The needle was not much different than stock.
I have a 01 KTM 125sx. How much power increase can I expect from this kit?
cris n on Mar 21, 2017
BEST ANSWER: I wouldn't expect a power increase (although it can give you that) - what you're looking for with a jet kit is to make the engine respond correctly to all (most) throttle positions at any RPM range. To say it another way, you typically won't be able to discern the power difference by riding, but it should run better if done correctly.
How to I get another set of instructions? I lost the ones that came with the jet kit. Thank you.
John D on Jul 28, 2019
BEST ANSWER: It’s actually easier to email their tech they have incredible customer service and will email you back the specs
Hey folks I have a 2016 yz 250x has anybody tried a Lectron carb on the same or similar bike? I've read cool stuff online I'm tempted to snag one. This is my first bike so i'm a total amateur, I hear they are really easy to adjust which is half the reason I wanna get one. Would people recommend this over getting a JD jet kit?
ryan s on Oct 22, 2018
JD Jetting Jet Kit
JD Jetting Jet Kit
Lectron Adjustable Power Jet Carburetor Kit
Lectron Adjustable Power Jet Carburetor Kit
BEST ANSWER: I purchased a lectron when I first started riding several years ago and still have it on my husqvarna wr250. But honestly a have a regular carb on my 300xc and once its jetted I leave it from spring to fall once you tare into a carb a few times you'll catch on quick. The only reason I'd say a lectron would be nice is if you live were your ride from sea level to 10000ft in one day it would shine then. That's just my opinion tho.
What's included in the box?
Levi S on Oct 23, 2017
BEST ANSWER: JD kit has two needles (hot and cold weather), one needle clip and 5 main jets, and instructions, problem list and suggestions..

150

155

158

160

165
I’ve tried to get info from JD about temperature settings. They told me that they are set or referenced at 50 to 70°. I wrote back and haven’t heard anything. I live in Wyoming, my riding temperatures can go from 10 to 90 within the year. Any info?
Paul F on Feb 28, 2019
BEST ANSWER: Another factor to consider is elevation. What is your elevation there?

The main jet will survive a huge swing in temps as will the pilot jet:::: But the fuel screw (air fuel mixture) will need adjusting along those big swings.
I can’t see what bike you are putting all of this on but if they offer an external adjustable air screw then I would also get that so it’s easier to adjust each day.
I hope this helps you some.
I have a 95 yz250 and ride at 8000 feet elevation and do a lot of free riding and jumps and my bike is running really rich and fouls plugs what kit do I need?
Earl B on Feb 21, 2018
BEST ANSWER: If you buy the JD kit then you'll get all the parts you need (pilot jet, main jets, needles, etc) and instructions to help get you in the right ballpark in terms of jetting for your altitude and riding conditions. Then if you're still having issues you'll have access to their support to help you adjust it from there. I can't speak for your YZ250 specifically, but I've used these kits in a few bikes with good success just using their recommended settings at whatever altitude I'm at (between 5-12k).
Can I get replacement directions?
robert l on Feb 11, 2018
BEST ANSWER: JD jet kits usually have instructions with them. If they do not, just go to their website and download a .pdf. If you need to, give them a call, their customer service is awesome.
I have already purchesed a kit but need a replacment needle due to dirt getting in my carb and damaging it, where can i get one?
konner p on Jan 22, 2018
BEST ANSWER: I would contact JD Jetting. We do not sell just the needle for this kit.
Do you stock the JD jetting kit for the DR-Z400E? (2017)
A shopper on Dec 20, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2018 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
What one will work for klx250?
A shopper on Dec 2, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2018 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
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