These Mods Made My KFX450R WAY FASTER! (and louder)

I should have explained this in the video, but because I'm receiving so many comments asking why I converted from EFI to carb, here is a brief explanation. In the KFX450R, especially the early models, the fuel injection system was known to have issues with reliability, specifically with starting and off idle throttle response. There are many well tuned EFI systems that run AMAZING but it is not always the case. The carb conversion was something a lot of guys did and achieved better starting, better performance and reliability as well as ease of tuning. If you're interested in reading more into it, here is a forum thread with good info that convinced me to make the swap - www.kfx450hq.com/threads/green-monster-carb-swap-e…

Honestly one of your best rebuilds in my opinion. This thing went from a basket bike to a bat out of hell! Love the KFX450r and the content you’ve been putting out, keep it up man.

I love when he stands with the microphone and reviews his project😂😂

That KFX450R is pure bad ass and I love how you provide the links to the tools and parts you use in your videos.

Keep coming back to this video every time I wanna rebuild my KFX.

Love the led bars i have a dual row one for night rides and its super bright. Also with it being on the bars when your turning the light follows. Not bad for a kfx mike 🤣🤣

When you port heads you want to smooth out the exhaust side but leave some ruffness to the intake side. You never want to polish intake runners smooth. This is so the gas droplets can bounce off the imperfections and atomize properly before hitting the valves. Especially important for carbed applications. What i was taught by old skool drag racers in my 1/4 mile head porting days.

i hope u know tha whole time i watched this i was so excited over it, i grew up as a huge kawasaki fan, had a lil toy quad since i was 5, not sure what model it was as i’m jus getting back into it, but this made my day

This machine was RIDICULOUSLY fun to ride, especially in the dunes. I know most OEMs focused primarily on SXS which squashed sport ATVs, but I really wish Team Green would of kept this machine in their lineup, like Yamaha still has the 700 and YFZ450

Good to see some KFX 450'S still out there. Been a long time since I've been on mine. It's moded also. Little Sahara Utah is my home playground. I live in the SxS world now. 😄

I had FMF full header exhaust n titanium exhaust muffler. Excellent sounding n great on the track and everyday riding. My buddies riding behind me said they could feel my exhaust 10 feet behind me. Love FMF, never failed me. Won many trophies

This dude is amazing love every one of these videos

Damn Mike, your KFX is slowly turning into Josh Creamer's Factory 2009 KFX! All you need is the Fox Floats, Kick starter conversion, and to paint your frame, wheels, and A-arms black. Glad you're continuing on the KFX, it's low key one of my favorite 4 stroke sport quads. They just have so much potential when you uncork them, and I wish more people recognized that.

Wow dude that pipe is sick....stepped header? ...you can tell it's powerful...

That fit and finish on the exhaust though🙊 they even ground the inside of the header flange

That is the coolest quad ever.

Only sport quad I’ve ever wanted that was four stroke sorry Honda’s lol like you guys to but team green always . She barks 🔥 and looks like she tracks up well in the lower gears high throttle

Man that thing came a long way! Looks great and sounds even better!

Definitely diggin this kfx build! Carb swap is awesome for us that have had nothing but trouble with FI

Hell yeah brother!!!! Way to pay homage to the old polaris....