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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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Comments On Feb 01, 2013:excellent product ! wakes up the quad !
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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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Comments On Mar 22, 2012:I bought this not knowing much about carbs....you get buy in peices for ALOT less.
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Comments On Dec 21, 2011:i got this kit to rejett my blaster and it didnt even have the right jett i needed,just go to a shop and buy the one you need.
TECH NOTE: The FMF jet kit uses their own numbering system and it is not the same as a standard Keihin or Mikuni numbering system. Follow the instructions included with the kit.
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Comments On Dec 12, 2011:this kit is for a bone stock bike with a fmf silencer. it does not have even close to the right jets to tune a slightly built motor. Waist of money. had to go buy more jets.
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Comments On Sep 15, 2011:Installed this on a 2004 Yamaha Grizzly 660 after installing an FMF PowerLine exhaust. The exhaust alone made a slight improvement, but with this jet kit the improvement was very noticeable. Instructions were very clear and detailed. I was disappointed that this is just a Dynojet kit with FMF packaging, I basically paid extra for some FMF stickers. Also, the price seems steep for a slide spring, jet needle, and several main jets.
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Comments On Jun 10, 2011:FMF box, FMF instructions, DYNOJET jets...expected more out of this. The instructions were clear enough but i have a major low-end bog. Mid to high end power are amazing. I hit the rev-limiter in 5th and was only moving at maybe 45-50 mph (tires spinning). Just wish that i would have known that it was basically a DYNOJET kit. I am running a modified air box and stock exhaust without baffle though, will be getting quick-shot 3 and full FMF exhaust next. Instructions say that on the trx450 it works best with FMF exhaust and the airbox snorkle removed. We'll see...
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