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FMF Jet Kit
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FMF Jet Kit

Our price: $34.99$75.99

MSRP: $59.95 - $83.99 - You save up to $24.96 (42% off)

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  • FMF Jet Kits are designed to get maximum horsepower out of your motorcycle or ATV.
  • Comes with step by step instructions, diagrams and procedures to help get your jetting where it needs to be no matter what elevation you ride at.

FMF Jet Kit Reviews

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0 of 0 people found this review helpful.

Worked perfectly

Comments On Feb 18, 2015:Installed jet kit on my yz450f. Bike now runs perfect with my aftermarket exhaust. Came with everything I needed and for a good price.

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0 of 0 people found this review helpful.

Great Product

Comments On Dec 30, 2014:This Jet Kit worked very well and is very reliable.

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0 of 1 people found this review helpful.

great kit, starts good, better power

Comments On Oct 13, 2013:The engine and exhaust are stock. The carb had some jetting problems, old fuel, bad fuel, alcohol. This fixed the problems. Runs great, no starting problems, no hesitation on hard hits, more power. Follow the directions! Especially if you are an accomplished mechanic! The jet sizes are labeled differently from stock and it fits together a little differently than you would expect. Good trouble shooting guide. The only thing that I had to change up was the pilot jet. Moved from stock (I think 32?) to a 50.

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0 of 0 people found this review helpful.

Worked and was e-z instal

Comments On Jun 03, 2013:was easy to do on my yfz450, but what makes a fmf jet kit different from a dyno jet kit is fmf stickers and a few more $ to pay for them. The instruction even say dyno jet lol. Your paying for stickers.

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0 of 0 people found this review helpful.

Good kit for the money

Comments On May 29, 2013:It's a cheap kit. It does the job for basic mods, but it only comes with 1 needle.

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1 of 1 people found this review helpful.

fmf jet kit

Comments On Apr 15, 2013:I bought this kit along with the fmf powerbomb header. It is a good kit, but i wish i would have came with the correct pilot jet. Also, before i bought this i would have been nice to know in the product description the sizes of the jets and everything the kit includes.

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FMF Jet Kit

Comments On Feb 01, 2013:excellent product ! wakes up the quad !

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0 of 0 people found this review helpful.

FMF Power Up Kit for 400EX

Comments On Nov 17, 2012:I bought this to jet my 400EX after installing an FMF Q4 Pipe and K&N filter. Overall it is a nice kit and includes alot of main jets and a different needle in a nice reusable plastic case. One of the down falls is that it does not included a Pilot jet. Anyone who knows anything about jetting knows that the two (main & pilot) do in fact effect each other when a change is made. I had a hard time finding the perfect jetting with this kit. The recomended jetting was way too rich and gave eratic carburation and throttle response. I eventually scrapped the whole project and went with larger sized factory Keihin jets which worked flawlessly. Maybe someone else will have better luck with it than I did. All in all, it's over priced and does not included everything necessary (pilot jets) to do a true re-jet and it be correct.

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Comments On May 30, 2012:Followed the instructions and the bike ran perfect with recommended settings. No fumbling or troubleshooting needed, it 'just worked' for my application.

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Comments On May 12, 2012:worked great easy install....

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