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  1. 2012 KFX450R bogging/backfiring in 4th and 5th gear

    Kawasaki KFX450/KFX400
    Hi all I have a 2012 KFX450R, it runs good til it gets to 4th and 5th gear. It just starts bogging down and backfiring. It runs good in 1st 2nd and 3rd gear. The only thing aftermarket on it is a Yoshi pipe. I have been trying to figure this problem out for the past 2 months. I have put a new...
  2. kfx 700 antifreeze in oil

    Kawasaki KFX700 V-Force
    Okay got 2 04 700 both needed motor work one is perfect now and runs as it should, the other needed a head swap due to the previous owner cracking it either from over torc or heat not sure but replaced everything and its running like it should. I went to top off radiator and it filed the case...
  3. KFX 700 Transmission issues

    Kawasaki KFX700 V-Force
    Hey guys, im new here. I started getting issues with kfx 700 transmission after trying to pull my friend with polaris out of mud. I was pulling him when tranny just spited out the gear. Now when i put it in drive (it engages perfectly) and try to drive it, it spits out to neutral. What coulv ve...
  4. Kawasaki KFX 400 Idles fine Backfires when you try to give it gas.

    Kawasaki KFX450/KFX400
    I have a KFX 400 that will start and idle, but when you give it gas it starts back firing badly. I have put a big bore kit in. Put new valves and shims in the head. Replaced the carburetor. Triple checked the timing. I replaced the generator, voltage regulator, and a new AGM battery. I am unsure...
  5. 2009 KFX450 Monster Energy edition

    For Sale
    I'm selling my 09 KFX450 just don't ride it enough anymore. If I did get something else it would be a 4x4. Its in great shape run good. It has a Procom controller, Fuel Customs intake and Dasa exhaust. Anyone in the Baltimore/Washington DC area are welcome to come take a look at it. I really...
  6. Its Something that i missed? Engine Problem? kfx400

    Kawasaki KFX450/KFX400
    Hi people mi name is steve im new in the forum, and i speak spanish so i will do my best todo tell you my problem, i got a kfx 400 2004, and i rebuild the engine like 3 months ago, i buy need cylinder new top head valves chrankshaft everything haha i destroyed the motor hahaha, but the engine...
  7. 2005 kfx80 Cold Start

    Everything Else
    I have a 2005 kfx80 that hard to cold start. After it starts it runs fine. When its cold it wont crank sitting on all four tires. I have to lean it over on two wheels and it will crank right up. After it warms up it cranks fine the rest of the day. I cant figure it out. Ive checked compression...
  8. 2003 kfx 80cc. Not getting spark. Need help

    Everything Else
    Ok so bought this 2003 Kawasaki kfx 80cc. I test drove it. I got it home an battery was weak. I put a jump box on it it turned over I was choking it then it stop. I noticed it popped the little red button by bumper pushed it back in couldn't get to to start. Pulled the plug no fire. Took a test...
  9. New clutch spring in my V

    Kawasaki KFX700 V-Force
    I was contemplating putting a new primary spring in my V. If I bought a pink spring or a dalton blue would that be all I needed? Just install the new spring and get the gains without further modification? If so what do I exactly get out of it in terms of power? Thanks for the help!
  10. kfx 400 low power

    Kawasaki KFX450/KFX400
    Hey everyone, first time posting but I need some help, u have a 2006 kfx 400. The headgasket was blown so I replaced it yesterday using the Manuel and following all the proper torque Specs. After everything was put back together I started it up and it fired right up and ran smooths as can be. I...
  11. ITP dune tires

    For Sale
    Hi, I've got a rear set of ITP dune tires that are brand new. The tires have never been on the four wheeler. They come with the rims. The rims are ITP rims and the tires are ITP sandstars. The size of the tire is 20x11-10. Very nice tires and like I said these tires are NEW. Will answer any...
  12. Should the fan turn on right when you start the fourwheeler?

    New Member Introductions
    I just got a kfx 450r and I'm not sure if the fan kicks in when it starts to get hot or should it turn on right when you turn the key? Help
  13. A little KFX400 help please

    Kawasaki KFX450/KFX400
    I have a 2007 KFX400. I've replaced the battery, spark plug, and cleaned the carb. Problem is, it won't start with the starter. Sometimes , if I pump the throttle for a while, I can get it to go, but it acts like it's not getting fuel. If I push start it, it will start without exception, as soon...
  14. 2003 KFX 400 gas problems

    Kawasaki KFX450/KFX400
    I have an 03 kfx 400 ran fine until last weekend just stalled and hasn't started since I replaced the plug cleaned the carb jets work fine the carb is just flooding out and not going to the motor it actually seems like it's pushing it into the intake box and not the motor any advice would be...
  15. kfx 400 hand guards

    Kawasaki KFX450/KFX400
    hey, im lookin for some handguards for my bike just wonderin one some good ones would be?? also any metal mulish monster or just monster graphics kit? thankks!!
  16. 2008 kawi KFX 700 red marble in PA

    For Sale
    Name: tom z Location: wilkes-barre, pa 18706 Contact Info: 570-885-3566 Year: 2008 Make: kawasaki Model: kfx 700 Color: red marble Mileage: 100 hours Transmission: Automatic Price: 3500 obo Description: I have a 2008 kfx 700 red marble with dual HMF exhaust, jetted, full under body skid...
  17. Newbie from Boston ny. Need help!! 04 kfx 700

    New Member Introductions
    Hey guys I'm new to the site I'm looking for some help I have a 2004 kfx 700 I got on a trade deal needless to say the "broke" throttle cable concealed the fact the thing runs like crap.. So from what I can gather I have a stock sealed air cleaner with a k&n filter, dual pro circuit exhaust...
  18. first ride on my kfx700

    Member Pictures & Movies
    So I got a 04 kfx700.. im usually a 450 rider but my wife was needing a quad and i found this guy in phx that works for intel that had this kfx and its completely modded.. carbon fiber fenders (i want the green ones), dmc afterburner exhaust,epi clutch kit,billet everywhere,led taillight,full...
  19. 2004 kfx 400

    Kawasaki KFX450/KFX400
    My cam chain/timing chain is ticking. It still has the stock tensioner. Would cleaning the tensioner do anything or is it time for a new hotcams kit? :D
  20. KFX700 Battery Box

    Keep Cracking my Battery Box In need of one will pay today for a crack free box via PAYPAL HELLLPPP Please