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  1. 2009 KFX450r Monster Edition (NOT STARTING)

    General Discussion
    So i bought this kfx from my friend a while ago and was running fine till now I was riding with my friend and i knew I was low on gas but I was going to go refill it so im just riding it and it bogged then just shut off on me so I thought I ran out of gas so I went and got gas and it still...
  2. Intake questions/opinions!!!!

    General Discussion
    Hey everyone I'm running a full dasa exhaust and I recently purchased a weisco fuel controller..I was looking at a velocity intake a cfm intake and a fci and I also run in mostly dry conditions with just tiny ammounts of water splashing here and there,would running with a pre filter with no box...
  3. Kfx 450 2008 efi / cdi problem

    Engine/EFI/Drivetrain
    Hi I have a 2008 kfx 450r efi and I seem to be having some problems with bogging, and lack of power. When I run the quad it will run fine but sometimes when I restart the quad the f.i or overheating light by the bars will randomly turn on and the quad will bog, sputter, stall out, and not want...
  4. Newbie to this got some questions

    Dyno/Tuning Room
    Hello everybody! I am new to this site but have used it in the past to solve other problems but i have a two questions id be grateful for if you guys could help me out! 1.) Whats the best slip on performance wise, im tight on money thats why i cant go full exhaust right now, i will be putting...
  5. Air intake

    General Discussion
    I have a 2009 kfx 450r with a fmf factory 4.1 silencer with ss mid-pipe and a fmf efi power programmer. I am looking for a intake to add some additional power. my main questions are what intakes will work with my setup and I also need one that will work for trail riding, going through mud, water...
  6. New KFX 450r help

    General Discussion
    Hi, i'm new to this forum and need some help with what i should buy for my quad. I just bought a 2009 KFX 450r monster edition. i was looking to upgrade it, maybe a full exhaust, and power commander, maybe an intake too. If i buy anything, what should i buy and where's some place with it at a...
  7. 08 kfc 450r cutting out lower rpm 1st - 5th

    Member Introductions
    i have a 08 kfx 450r with a yoshi comp full exhaust, k&n air filter, and everything else is stalk. a buddy and i went out riding and once the engine got warm i noticed it cutting out, and sputtering. once i got past half throttle it would come out of it and run fine. i stopped and it was still...
  8. 2007 yfz 450 built !!!!

    For Sale / Wanted
    i have a 2007 yfz 450 with a baldwin engine that can run 92 octane has walsh a arms and swingarm and a +2 steering stem ohlin shocks all around pro taper bars bike has about 20hrs on it and also have new dwt rims and tires coming quad has alot more there is $23000 stuck into it and $6000 is...
  9. Kfx turns over but will not start when hot.

    Engine/EFI/Drivetrain
    Hey guys, I am really stumped at what has been going on with my 08 kfx 450r. I have had numerous people look at my quad including a kawi mechanics. My quad starts up great when its cold without any problems, It is not lacking any power and feels great when i ride. When i come off the track and...
  10. 2009 walsh kfx 450 race quad part out cheapp sale!!

    For Sale / Wanted
    Parting out my 09 Walsh Monster Energy motor race bike these are the parts I still have along with like new stock parts im selling also. -Walsh racecraft ported/polished/flow head with Kibblewhite Valves and Springs>>>SOLD -Hotcams stage 3 camshafts>>>SOLD -Transmission complete>>>SOLD...
  11. 08 kfx 450 for sale 4300 obo mahopac, ny

    For Sale / Wanted
    2008 kfx 450r ~ Carbon fiber and diamond plated custom one of a kind plastics, black powder coated rear wheel hubs, pro armor nerf bars, pro armor heel guards, pro armor fat pegs,full aftermarket exhaust with heat wrap, K&N intake, green CV4 coolant hoses, hand guards, full skid plates including...
  12. Hi!

    Member Introductions
    Hi My name is Erick I'm From Costa Rica, I own a Shop with my father were we See all kinds of ATV 4x4 and 4x2 in all the common brands, I have always ride ATVs but until a now I'm starting to get a little serious. Thats why I dicide to take one kfx 450r '08 and start to give it some love...
  13. Power programmer help!

    Engine/EFI/Drivetrain
    I have a 08 with a full system FMF exhaust, FMF power programmer,15T front sprocket and I just put on a velocity intake. When I bought the bike it already had the power programmer on it and the previous owner turned all eight of the modes all the way up, which I know can't be good for the bike...
  14. post your pics, first day to today

    Pictures and Videos
    '08 KFX450r day 1 -FMF Powercore 4 exausht -FMF Power Bomb -FMF power programmer -Nerf bars -Blingstar front bumper Today -New nerfs -Add-on fenders -Pipe wrap -One Industries Masacre graphics -Next to come silver race hood, any other suggestions?
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