JD Jetting Jet Kit

JD Jetting Jet Kit
JD Jetting Jet Kit

$65.95 - $98.95

Description See Also: 147 Reviews 77 Questions Fitment
Item #JDJ0004

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147 Reviews
4.8 out of 5 stars
5 Star   133 4 Star   16 3 Star   2 2 Star   3 1 Star   1
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All Reviews
WRGuy Verified Purchaser
Michigan, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Very Good

Recently installed this jet kit in a 03' WR450 after installing an FMF Q4 slip on exhaust. I ended up removing the O ring on the accelerator pump as it gave a bit too much power for trail use. Directions were far better than the ones that came with other big name kits and the performance exceeded my expectations.

Jason Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
ALWAYS PERFECT

Dont even mess with your carb, buy this kit, follow instructions, twist throttle. Expensive for a couple pieces but so worth it. This is the first thing I buy for any of my bikes.

Jones Verified Purchaser
Idaho
Ease of Installation 3/5 Performance 5/5 Power 5/5
Jetting

2011 WR450F Installed an FMF titanium exhaust but it ran lean, backfired and stalled. I fellow rider recommended the JD Jetting. THe power and delivery difference was very noticeable. Spendy, but worth it.

jdad24 Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great product

Motosport is awesome

Odie Verified Purchaser
ipava, il
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
JD Jetting is a must have for two strokes.

I love these kits! I put them in all my bikes and suggest them to friends.

twmotox Verified Purchaser
Winter Haven, FL, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
JD jet kit KTM 450EXC

After installing the jet kit it made a noticeable difference in throttle response and overall power. I contacted JD customer support and gave them my location and they recommended a different setup than what was in the instructions so i went that way and it worked great. Definitely recommend

Mrbojangels Top 1000 Contributor
Springfield
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Best kit on the market

I have used jd kits atleast 8 times and on every occasion they are spot on with their kits.

Keith Verified Purchaser
California, USA
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Power 4/5 Style 5/5
Easy Upgrade

This was an easy performance upgrade. Directions we super easy to follow and the correct jetting was super easy to figure out and get in the ball park. This improved my top end performance dramatically.

Andy Verified Purchaser
West Virginia, USA
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Power 5/5 Style 5/5

Installed on an 09 WR250F made the bike a completely different machine instructions were easy to follow with pictures used the recommended settings and haven't needed to change anything comes with the o-ring mod I used the thinner one incase it breaks I still have a back up the only thing the instructions didn't say was that you have to remove the top motor mounts to roll the carb back and forth which was very easy paired this with the a Dr.D slip on and have power all through out the throttle

Ecmoto413 Top 500 Contributor Verified Purchaser
Mass
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Jd jet kit

Jd jet kit was a perfect upgrade!! Have a few jets to swap out when teps drop or go up!! Tuned the big out of my 08 Ktm 200xc I use on a motorcross track!!

TwistedThrottle Verified Purchaser
Durability 5/5 Ease of Installation 3/5 Performance 5/5 Power 5/5 Style 5/5

Best throttle response ever been much better power throughout the whole range

Billy
Performance 5/5 Power 5/5
Power boost

Bought this along with the procircut t-4 pipe for my kx250f and it gave it a pretty noticeable power boost

MikeR Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
JD jetting is spot on and my KTM 530 runs great!

JD jetting is a must have for KTM 530's

Keith Verified Purchaser
WV
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Easy

The kit works great and is more forgiving than stock needles.
They also have great customer service for any application questions.

ChaseH Verified Purchaser
Illinois, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5
Gold standard jet kit

Worked well with my 3x3 mod and new exhaust. Must buy for the DRZ

RobH Verified Purchaser
Texas
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Great product and easy to install

I read a lot of reviews regarding different jet kits for my 07 CRF 450. JD Jetting Kits had, by far, the best reviews and now I see why. Not only is the packaging and products top notch, but the installation instructions the easiest to read and follow that I have ever seen. I am still trying to get everything dialed in with my bike but I know I will be able to with this kit.

derket485 Verified Purchaser
Dalton, NY, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

super easy install, performance greatly improved!

Hondajetting Verified Purchaser
San Diego, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
Very good instructions

I have installed JD jet kits on a crf150r, crf250x, and crf450x. They have been spot on the first time on all three bikes. Good step by step instruction's

Retread
PA
Ease of Installation 3/5 Performance 4/5 Power 4/5
JD Jet kit for 2013 WR250F Yamaha

The kit comes with a larger idle jet which isnt shown in the pictures. If you are handy with tools, you will have no problems installing the jets. I have found that it improves the starting ability of this bike which can be difficult. It started in lower 30 degree temps after several twists to the throttle. It starts in warm weather easily. Also, it will bog less during warmup. It seems to have better low RPM throttle control also.

BobH Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
2005 KTM 300 exc

Easy directions for installation and to get a baseline. The jet kit really cleaned up the throttle response on my bike.

See 20 More Reviews
77 Questions
Answered:   77
Not Yet:   0
Mason
Q: Should I get this for my 03 yz125 I installed a pro circuit shorty and vforce reeds on it?
2 months 3 days ago
MotoSportExpert
MotoSport Staff Expert
2 months 2 days ago
A: It depends on how your bike is running with current jetting. These JD Jetting Jet Kits are great though if you do need to rejet. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
HancockMX546
29 days ago Location: Cheyenne, WY, USA
A: I very highly recommend this kit for the 03 yz125. I owned one with v-force reeds and a pro circuit r304 pipe that had some low end bog from the previous owner's jetting, and this kit got rid of it instantly. The JD kit is the best it gets.
Trenteg11
Location: Ohio
Q: 2002 Rm125?
2 months 16 days ago
What size jets would i get for this bike?
MotoSportExpert
Expert MotoSport Staff
2 months 13 days ago
A: JET KIT PARTS LIST-
Mikuni main jet- 370
Mikuni main jet- 390
Mikuni main jet- 410
Mikuni main jet- 430
Mikuni pilot jet - 35
Needle clip
BLUE MARKED NEEDLE (Standard)
RED MARKED NEEDLE (Leaner 0-1/4 throttle)
gk168
Location: Durango Colorado
Q: Will this fit and work on my crf150r?
2 months 17 days ago
I have a 2008 crf150r and it needs to be jetted. We bought it in a way lower elevation. I want it to run good where I live at 6250 ft above sea level.
MotoSportExpert
MotoSport Staff Expert
2 months 16 days ago
A: Yes the JD jetting Jet kit is a great kit and will work great in your 2008 Honda CRF150R. Developed with settings from sea level to 12,000 feet elevation. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct kit for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Gilby492
Location: Owego, NY 13827, USA
Q: 2005 Yamaha Raptor 350SE jetting?
2 months 27 days ago
I have a 2005 Yamaha Raptor 350SE. I am looking to put a full FMF exhaust on along with a GYTR high flow air filter. Would this jet kit give me the right jets for peak performance? I am also at 1000ft above sea level roughly.
MotoSportExpert
Expert MotoSport Staff
2 months 26 days ago
A: Yes, the JD jetting jet kit will come with everything you need to jet your 2005 Yamaha Raptor 350SE. With setting ranging from sea level to 12,000ft. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Wess
Location: Colorado Springs, CO, USA
Q: Does this kit come with a sheet that tells you how to jet your bike for elevation?
Over 5 months ago
I am wondering if this kit tells you what combination of jet, leak jet, and needle to run at specif altitudes. Does it offer these specifications? (I am running a 2007 KTM 250 SX-F)
MotoSportExpert
MotoSport Staff Expert
Over 5 months ago
A: Yes the JD kit comes with detailed instructions.
Brian
Location: Pennsylvania, USA
Q: 2007 honda trx450er?
Over 5 months ago
I recently purchased a full hmf exhaust from you, they recommend a jetting starting point of 165 main and 48 pilot. Will this kit give me this?
Mrbojangels
Over 5 months ago Location: Springfield mo
A: Contact jd jetting directly.
These kits usually only come with a single pilot and multiple mains and needles.
They are spot on with the kits in most cases but if you have an extreme case of multiple mods it may be best to order the kit and a single pilot to finish it off.
Cameron
Location: Evansville
Q: I have a 03 yz 125 with a Athena top end and v force power reeds will this kit work with my set up.?
Over 6 months ago
MotoSportExpert
Expert MotoSport Staff
Over 6 months ago
A: Yes the JD jet kit should work great with your set-up!
go57
Location: new zealand
Q: I have two bikes a 2002 and a 1997 cr125 are there different kits for each one?
Over 7 months ago
MotoSportExpert
MotoSport Staff Expert
Over 6 months ago
A: The JD jet kits would be different for the 1997 and 2002 Honda CR125.

JDH014 - Honda CR125 (85-99)
JDH012 - Honda CR125R (00-08)
Bubs
Q: Would this be applicable to jet my 2003 yz125 with a FMF FATTY SERIES and a FMF SHORT SILENCER?
Over 8 months ago
Since i have put on my FMF Fatty and Shorty Combo i did not jet my bike and it is making the Shorty glow red hot? is it from not jetting it? would jetting it with a 410 main and a 40 pilot resolve the problem?
MotoSportExpert
Expert MotoSport Staff
Over 8 months ago
A: Your silencer should not be glowing. There is not a specific setting I could give you for jetting your bike. It would really depend on your location (altitude/temperature) and current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
Carvajal7
Q: Is this everything I need to fully adjust my carb?
Over 8 months ago
The JD Jetting Jet Kit JDKA01 for your 2007 Kawasaki KX250 would include the following: JET KIT PARTS LIST- Keihin main jet- 170 Keihin main jet- 168 Keihin main jet- 162 Keihin main jet- 160 Keihin Pilot Jet - 45 BLUE MARKED NEEDLE (Richer 0-1/4 throttle) RED MARKED NEEDLE (Leaner 0-1/4 throttle) Keihin Needle clip
MotoSportExpert
MotoSport Staff Expert
Over 8 months ago
A: The JD Jetting Jet Kit comes with everything you need to re-jet your bike.
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