I purchased this kit for my 2017 Honda XR650L and it did help with the lag in throttle response when it gets warmed up completely but by no means did it make a significant difference in power range
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I’m embarrassed for everyone that FMF put their name on this. It is worthless. You get a handful of proprietary jets. They don’t even give you real keihin jets, you get a little adapter so their junk can screw into the carb. Horrible design. It’s in the garbage now. Just buy real jets and save money and get better performance. If you’re thinking the proprietary jets are ok, they are not. The adapter has a larger hole than the jet that is screwed into it, creating a big turbulence lip. Main jet should be smooth and uniform.
My Raptor had a fmf titanium 4 pipe with stock jets. It would backfire at 1/4 throttle and not accelerate. After installing the stage 2 jet kit it had power all through every gear. Very satisfied with the kit!
Worked great,came with little screws and big screws. I installed the little screws on the handlebars And the big screws on the swing arm of drz400 and it sure made it faster.
10//10. Would add more screws
Have the larger jets in to tune it for the intake and exhaust. My Raptor 660 runs great now and is tuned properly. Very happy with this kit.
I install FMF Q4 exaust on my honda trx450r , did is jet kit fit ? :)
Great power but stage one is stupid didn’t run good if you got a aftermarket pipe just do stage 2
Installed kit along with header and exhaust. Huge difference on my 2017 XR650L.
My 06 KTM 525 was sleepy in the performance area. With all the mods people were saying to do to the carb I was very hesitant to do anything. After much thought (too much) I popped for the FMF kit. After opening the box the first thing I noticed was the funny looking main jets. The kit I had did not have Keihin jets. It did have an adapter that you have to install first, then use the supplied FMF (dynojet jets.) Word to the wise, a 155 DJ jet is not the same size as a 155 Keihin main jet. There is a conversion chart if you want to compare them. I kept my Keihin main jet in since I had already jetted the bike before buying the FMF kit. Its the FMF needle that powers up the big KTM. It went from the friendly, sleepy power to snappy, power now. I used to struggle to get a 2nd gear wheelie, now it climbs for the sky in 3rd. You wont go wrong with this kit. If you only do 1 mod, this would be the biggest improvement. My bike has a slip on (end cap on) to derestrict the exhaust and the FMF kit.
What main jet from this kit do I use for my 04 DVX 400
- Answered: 61
- Not Yet: 0
Question asked by Jp995
Question:Q: Does this kit only do one carb or both for the raptor 660s??Question asked Over 6 months ago
Question answered by Trevor GearheadUser's contributor status: Top 10Question answered Over 6 months agoAnswer: A: It will include components for both carbs.
Question asked by Steve
Question:Q: What are some recomendable jets for trx450r with fmf slip on with kn air filterQuestion asked Over 6 months ago
Question answered by IsaacUser's contributor status: Top 10Question answered Over 6 months agoAnswer: A: We suggest contacting FMF directly for jetting recommendations.
Question asked by Ccorlew
Question:Q: I have a 03 raptor 660r just installed a yoshimura exhaust and it idles fine but when you give it some gas it wants to die would this kit be a good one to go with ?Question asked Over 7 months ago
Question answered by robertUser's contributor status: Top 10Question answered Over 7 months agoAnswer: A: A full exhaust system will require a jet kit but i can not verify this is causing the issue. If it is cutting out due to a lack of fuel this kit will provide a selection of larger jets to add more air and fuel to the bike.
Question asked by Powerstroke60
Question:Q: I have the dual carb on my 2001 Raptor 660r will it come for one for each carb?Question asked Over 9 months ago
Question answered by CodyGearheadUser's contributor status: Top 25Question answered Over 9 months agoAnswer: A: This jet kit comes with parts for both of your carbs. You only need to purchase a quantity of one jet kit to jet both carbs.
Question asked by Jordon
Question:Q: I have a predtor 500 has stage 2 cam and raceing timeing chain and stage 2 clutch when I got the quad the guy said it needs bigger jets u have to pump the gas to start it was wondering if these where what I needQuestion asked Over 10 months ago
Question answered by Tyler GearheadUser's contributor status: Top 50Question answered Over 10 months agoAnswer: A: These jets will be year, make and model specific. We would need to know the year of your Predator to make a quality recommendation.
Question asked by Jimmy
Question:Q: I just bought a 05 Kfx400 with hmf slip on exhaust and my bike backfire due to much air would this jet kit fix this problemQuestion asked Over 10 months ago
Question answered by PaulUser's contributor status: Top 10Question answered Over 10 months agoAnswer: A: The FMF Power Up Jet Kit comes with a variety of jets and needles to allow you to fine-tune your carburetion for your particular conditions.
Question asked by Josh
Question:Q: I just bought a 2008 Crf250r. It has a mega bomb header and the fmf factory 4.1 dual exhaust and it’s very difficult to start cold and even sometimes hot. It bogs alittle if I give it a fistful of throttle, would this help?Question asked Over 11 months ago
Question answered by MichaelUser's contributor status: Top 10Question answered Over 11 months agoAnswer: A: Yes it will, good idea to keep consistent with your air fuel ratio. You may also want to check your final drive.
Question asked by Hunter
Question:Q: I have a 2007 yfz450 with full yoshimura exhaust and k&n intake there’s a lot of bogging issues and cutting out on start up’s would these be good jets to replace oem with or point me in the right direction of good jets for my unitQuestion asked Over 11 months ago
Question answered by PaulUser's contributor status: Top 10Question answered Over 11 months agoAnswer: A: Yes, the FMF Power Up Jet Kit will do what you need.
All of our jet kits for your 2007 YFZ450 are shown in this link: https://www.motosport.com/atv/jet-kits?mmy=yamaha;yfz450;2007
The JD Jetting Jet Kit and the Moose Dynojet Jet Kits to fit your '07 YFZ450 are on-hand for immediate shipping.
Question asked by Jaybird
Question:Q: What exhaust is this jet kit made for?Question asked 1 year 1 month ago
Question answered by Trevor GearheadUser's contributor status: Top 10Question answered 1 year 1 month agoAnswer: A: Jets are not exhaust specific. These are FMF branded Dynojets. Profile your machine and a package with the appropriate sizes for your machine will be identified.
Question asked by Sig mk25 p226
Question:Q: Hey so I have a 04 banshee with the 396 (I believe ) Athena kit . And I'm having troubles getting fuel , mostly after full throttle. Will these jets work with the 396 ? Also which reeds do you suggest ?Question asked 1 year 2 months ago
Question answered by JamesGearheadUser's contributor status: Top 10Question answered 1 year 2 months agoAnswer: A: For the best jetting or tuning guides, it would be best to check out your owner's manual. These jets will allow you to give your Banshee more fuel as it would need from the kit you put in it. You can also call the Motosport Gearheads at 1-888-676-8853 for technical help as well.