Maintenance & Technical > KX250 / KX125
FMF OR PRO CIRCUIT ???
dcollins4328:
I am going to buy a new pipe for my project kx 500 soon. I want the bike to have an explosive midrange, with good toprange. I don't care about lowend power because I will not use it very often. What pipe should I get? I have heard that the gnarly pipe gives you great low end but kills your toprange, and that the gnarly desert gives good low end and top end,but is not explosive in the midrange. I have never tried anything procircuit before?
don46:
I've used both PC and FMF, on the 250 the pro circuit is best, irregardless which fmf pipe you use. Bill's makes a good pipe as well. If you want more power get another head, have it modified to use the Wiseco flat top piston, you won't believe the power increase, more than any porting job I've had done.
kx_rider53:
Generally I like PC. Nothing bad about FMF, you would probably be happy with either. However, i have heard bad things about the SST.
gowen:
--- Quote from: kx_rider53 on February 05, 2007, 12:33:17 PM ---Generally I like PC. Nothing bad about FMF, you would probably be happy with either. However, i have heard bad things about the SST.
--- End quote ---
I am aware of them saying it burns up the top-end because of the small chamber. But, I have of yet experienced it..
As for the PC vs. FMF.. It's an argument that could go on forever. Go with what you think will suit you best and your budget. I piped my KX250 and in the end it was just that.. a 250. I was no faster on the track or the drag. It's all about the "bling" and moving power from 1 place to another... Any overall power improvements are slight.
FuriouSly:
Dah Bling :-D
Sly
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