KDXRIDER.NET

any opinions on the fatty pipe on a 200? much difference in the gnarly desert, and the fatty? just wondering.

I run a FMF Grarly Desert Piple with a Boysen Rad Valve. It does wheelies in 3rd gear with no problems.

i wonder how the fatty performs?

I run a fatty on mine. Bike pulls like a 4t in that I can lug it down low without stalling and has great midrange power. BTW, it still has plenty of topend for what I ride, desert single track and fire roads. I'm very happy with it.

i have thought about a fatty for my kdx......... i have one on my ktm 300, and like it, but wasnt to sure about running one on my kdx. did the fatty seem to hurt the bottom any? over the stock pipe?

Thought you were talkin' about something else....

After clicking on this thread, I was horribly dissapointed as to content.

This site is great.

guess ill try to word it differnt next time ............i about fell out of my seat laughing when i read inda's post

dont want to start another post....... if i buy a fatty pipe.... sould i run vforce 3, or boyesen rad valve?

anyone?

A few guys had a fatty near my bike and they seemed to like it. I had a fatty on my 95 KDX 200 and I was happy with it. That was the bike that "you should have never sold" but did. About six years of good riding and I had to change the back tire and the oil a few times.

kdxmaniac wrote:dont want to start another post....... if i buy a fatty pipe.... sould i run vforce 3, or boyesen rad valve?

From everything I have read the Vforce is the way to go. I haven't done it yet but plan to down the road.

has, or does anyone run the rad valve? how does it work on the 200?

Several people have tried and the concensus is that it olny provides a slight increase in throttle response. The 607's provide a much better bang for the buck and outperformed the RAD valve....

why did I think this thread was gonna at least have some Cypress Hill lyrics?

I had a RAD valve and an FMF "woods" pipe on my '96 KDX200. The RAD valve gives a definate improvement in throttle response and mid range hit. I also currently have a V-Force cage in my '04 KDX200, but I do not have a pipe yet, so any comparison would be apples to oranges at this point. My early analysis is that the RAD and the V-Force offer very similar performance gains. The RAD valve costs about $20 more, though. Either cage assembly will give you much more performance improvement than just the 607 reeds, IMO (I have ridden a 2000 KDX200 with 607's installed).

You guys w/ the aftermarket reed cages:

are you compensating for the efficiency gains by changing your jetting?
I have read about needing to drop down in jet sizes for aftermarket reeds.

my vforce reeds stated that I should leave the working jetting alone. I didn't because it was stock when I installed the reed cage and needed to be jetted badly anyway.

how did the 607's out perform the rad valve? aint the rad valve the whole valve setup, with a aluminum intake? and the 607's are just replacement reeds? correct me if im wrong...


i have the rad valve in my ktm 380 and my 300..... loved the power or {hit} it gave me, but wasnt sure about how it would do on a small cc motor. havnt ever tried v force, and thats why i was wondering.