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JD Jetting Jet Kit
JD Jetting Jet Kit

$65.95 - $98.95
Rating: 4.7 out of 5 stars

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      Item #JDJ0004

      231 Reviews

      4.7 out of 5 stars
      •   193 reviews
      •   25 reviews
      •   2 reviews
      •   6 reviews
      •   5 reviews

      All Reviews

      Rich

      Verified Purchaser
      12 days ago Lubbock, TX
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Takes out the guesswork.

      I've jetted alot of bikes by trial and error, but this makes it alot easier and faster by the chart, jets and needles provided. Seems a little pricey but worth it if you are crunched for time.

      Ready to ride

      Verified Purchaser
      1 month 18 days ago Oregon
      4 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Fixed bike

      Rebuilt carb on 2002 cr250 and the bike still would not run correctly. Finally broke down and bought the jd jet kit and it runs great now.

      Gradowski

      Verified Purchaser
      1 month 21 days ago
      5 out of 5 stars
      Ease of Installation
      4/5
      Performance
      5/5
      Power
      5/5
      Great kit, woke the bike up!

      Added to CRF250X. MUCH BETTER!

      Nealser

      Verified Purchaser
      2 months 8 days ago Peoria, AZ
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      4/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Huge improvement!

      I saw a HUGE increase in fuel economy and it just runs cleaner and crisper.

      Chava

      Verified Purchaser
      3 months ago Imperial, CA
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      This device improved my motorcycle to a perfection

      I ordered the jetting kit , it arrived on time installing was easy and rode the bike a day. The results were amazing.

      1967junk

      Verified Purchaser
      Over 5 months ago
      5 out of 5 stars
      Worked perfectly

      Bought the kit for my drz400 after doing the 3x3 mod, based the jetting off the chart/instructions with the kit, it was spot on.

      Scotty P

      Verified Purchaser
      Over 5 months ago Maple Valley, WA
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      4/5
      Performance
      5/5
      Power
      5/5
      Style
      3/5
      Easiest way to jet a bike ever!

      I have been working with my jetting for months trying to get the bike to both have tons of power up top and also have snappy response off the bottom. I installed the JD needle, and ran the jet that the manual spec'd for my altitude and instant fix. The bike hits way harder and just feels all around better. The kit comes with the install manual/jetting guide.

      VetRacer408

      Over 6 months ago
      2 out of 5 stars
      Know what jets are in the kit before you buy

      I purchased this for my 2019 Husky TC125. The included Jets are all LEANER than stock, with their own proprietary needles that they don't give any info on. You would think a jet kit would include jets for both sides of the stock jetting. You're better of sourcing the individual jets and needles you need, than buying a mystery kit that may not have anything useful in it.

      Orange86

      Verified Purchaser
      Over 6 months ago Savoy, MA
      5 out of 5 stars
      Ease of Installation
      4/5
      Performance
      5/5
      Power
      5/5
      Great Performance Upgrade

      Our 2005 KTM 450 EXC was rather hard starting, very cold blooded, and often suffered from symptoms stemming from overly lean jetting. After recommendations from other riders as well as from reviews online and in print, we decided to try a JD Jetting kit. Installation of the kit was pretty easy, as it was just changing the main jet, needle, and adding an o-ring to the accelerator pump actuator that causes it to open further. The most difficult part was getting the carb itself on and off the bike, as it is located very snugly in a very tight location and requires some effort to get in and out.

      Once installed and jetted according to the specifications given in the kit's really well written and easy to follow instructions, the improved running quality and performance were immediately evident. The bike started much more readily, it was less cold blooded, throttle response has become much more instantaneous, and the lean pops and hesitations the bike once had were cleaned up. Very impressive.

      The only negative about this kit is the price, at $80+ it is quite expensive for some jets, a needle, and some o-rings. The altitude and temperature range the individual jets are for on this bike are very broad so when riding in our normal riding conditions there will be no need to further re-jet. The other jets included with the kit are pretty much not required. But at least the performance upgrade was worth the high price.

      AVance13

      Verified Purchaser
      Over 6 months ago Culloden, WV
      5 out of 5 stars
      Durability
      5/5
      Ease of Installation
      5/5
      Performance
      5/5
      Power
      5/5
      Style
      5/5
      Works amazing

      I installed the jet kit in my 2016 YZ250. After riding it made a huge difference in power, performance, and throttle response. Instructions were easy to follow and took all the guess work out of tuning a carb. Would recommend this to anyone needing to tune a carb.

      124 Questions

      • Answered:   115
      • Not Yet:   9

      Question asked by Anthony

      Question: 05 YZ125, what jet come in this kit? I do not see if the description. If you cannot tell me or won't provide the information (like past questions) then me and many other have zero interest in this kit. I would just buy jets individually.
      Question asked 19 days ago

      Question asked by Adam2687

      Question:  Will these jackets work in my sons Ktm 50 sx It has all of the original jets in it now it runs very rich
      Question asked Over 7 months ago
      Question answered by Paul
      User's contributor status: Top 1
      Question answered Over 7 months ago
      Answer: Sorry, no. The JD Jetting Jet Kit is not available for the 50cc KTM models.
      To help us to find KTM-Delorto jets for your KTM, we will need to know the exact model year.

      Question asked by Killinallday76

      Question: I have a 2006 Yamaha YFZ450 and wondering If the JD jet kit come with instructions on the jet size and needle to use? I live at sea level and highest would be 2000ft.
      Question asked Over 7 months ago
      Question answered by Chowe
      User's contributor status: Top 25
      Question answered Over 7 months ago
      Answer: Yes this kit will come with instructions and jetting suggestions. If you have any questions give us a call at 1-888-676-8853.

      Question asked by kdeleyer

      Question: I have a 2017 ktm 125sx and bored it out to a 144 should i go with these or the 150 jets
      Question asked Over 7 months ago
      Question answered by Michael
      User's contributor status: Top 10
      Question answered Over 7 months ago
      Answer: this is the set up that will work for your bike as an exact fit for your carb.

      Question asked by Tommy

      Question: I have a 2006 Honda cr250 and ride at an altitude between 7-10000ft. Will these work for my bike?
      Question asked Over 8 months ago

      Question asked by chris

      Question: I got the jd kit for my cr 125 installed it to the recommendation's in the settings 1/4 throttle is responsive my 1/2 throttle bogs and full throttle is responsive. I have checked the float and it is at 15 mm like it is supposed to be. what the deal
      Question asked Over 9 months ago
      Question answered by DaveGearhead
      User's contributor status: Top 10
      Question answered Over 9 months ago
      Answer: Jetting is specific to the region and altitude you are riding in. I would suggest contacting JD Jetting for more specific instructions for your area. 360-350-0557

      Question asked by Ethan

      Question: I have a 2007 yz450f with aftermarket pro circuit exhaust.. they recomend a 165 main, 42 pilot and 55 leak. can you confirm this is in the kit for my bike?
      Question asked Over 9 months ago
      Question answered by Michael
      User's contributor status: Top 10
      Question answered Over 9 months ago
      Answer: This is the correct jet kit for your bike. Just ensure that you have your bike profiled in the site before ordering.
      JDJ0004-X001-Y035 is your part #
      Question answered by CodyGearhead
      User's contributor status: Top 25
      Question answered Over 9 months ago
      Answer: JD Jetting doesn't release which jets come with each bike fitment. Each kit comes with a variety of jets that allow proper tuning for most setups from sea level to 12,000 feet elevation.

      Question asked by chico

      Question: Sizes of jets?
      Question asked Over 10 months ago
      Question answered by Trevor Gearhead
      User's contributor status: Top 10
      Question answered Over 10 months ago
      Answer: The sizes of jets vary my year, make and model.

      Question asked by Benjamin

      Question: I have a 2000 KTM 380 MXC and ride from 6000ft to 9000ft. Would this kit work for my elevation? I am currently running 50:1 but after a ride today it bogged down and i think i should go to 40:1. I know the jets are set for like 4000ft so i need new ones
      Question asked Over 10 months ago
      Question answered by Trevor Gearhead
      User's contributor status: Top 10
      Question answered Over 10 months ago
      Answer: This should cover that range, no problem.

      Question asked by Johnzy

      Question: Does this kit have a 38 70 needle in it
      Question asked Over 10 months ago
      Question answered by Michael
      User's contributor status: Top 10
      Question answered Over 10 months ago
      Answer: This kit will vary as depending on which vehicle you are wanting to install this on. In essence, it is vehicle specific, if you want a more specific answer give us a call or chat online with your Make, Model, Year vehicle and let us see if we can't find you what you are looking for.
      1 - 10 of 124

      Fitment

      See all bikes that this part fits...

      # Part Numbers

      Product Variant Manufacturer Part #
      For Bored Carburetor JDK022
      For SX Head JDK021
      JD Jetting Jet Kit JDH012, JDH013, JDH005, JDK011, JDK008, JDK006, JDK005, JDK009, JDK014, JDK001, JDK002, JDK013, JDK015, JDK012, JDK016, JDK020, JDKA01, JDS002, JDKA04, JDKA02, JDS004, JDS007, JDS003, JDY011, JDY002, JDY005, JDY004, JDY003, JDY009, JDY015, JDY006, JDY001, JDH009, JDH002, JDH011, JDH003, JDH001, JDH008, JDH006, JDS001, JDS005, JDKA05, JDKH01, JDH018, JDH014, JDH015, JDH016, JDH017, JDH007, JDK023, JDK025, JDK018, JDHQ13, JDHQ14, JDHQ11, JDHQ07, JDHQ12, JDHQ10, JDHQ06, JDHQ04, JDHQ03, JDHQ05, JDKA16, JDKA07, JDKA10, JDKA13, JDKA14, JDKA03, JDKA15, JDKA08, JDKA09, JDS006, JDKA11, JDKA12, JDKA06, JDS008, JDS011, JDS012, JDS013, JDY017, JDY008, JDY014, JDY013, JDY012, JDY007, JDY016, JDP001, JDHB01, JDHB02, JDK026, JDK027, JDK028, JDK029, JDK030, JDHQ15, JDHQ17, JDHQ18, JDK037, JDK038, JDKH06, JDB001, JDB005, JDB004, JDB002, JDB003, JDHQ20, JDHQ19, JDHQ16, JDHQ28, JDB006, JDHQ25, JDK040