Maintenance & Technical > KX250 / KX125
woods conversion
chap:
I have an 07 kx250 and am converting it too a woods bike,not that it needs much,i am lovin it.I owned an 02ktm400exc before.it was good but it was heavy and i wanted to ride another two stroke off the fourstroke bandwagon for now anyway.I am curious as to what mods you kx guys use to improve this bike for the bush,i would greatlly appreciate the imput.CHUCK
chap:
I ride mostly tight single track with some fast sections in there.Lots of rocks,roots,hills,mud dust,we have her all up here.
The only thing i have done so far is install a 11 ounce flywheel weight,other that she is bone stock.
kx666:
your on the right track... i have yet to ride the 07 250, how do you like it? it looks like a great handling bike
gearing is the first thing you should do, try to gear so you almost top the bike out as a general rule,
also the ferther away your timing is BTDC the more low end power you can pull
i have been a fan of increasing compresstion, it gives you a ton more low end power as well as power through the rpm range. the down side is it is more dificult ro start and it will create more heat (this is when 83-1010 is great! it can lower temp. up to 50deg.)
enjoy your new bike!!
~steve
kx666:
--- Quote from: kx666 on January 08, 2007, 04:37:56 PM ---
is when 83-1010 is great! it can lower temp. up to 50deg.)
--- End quote ---
oops....i hate it when i talk/ type in part numbers... BTW that is WPS # for "Engine Ice" i just get soo excited about bikes...sometimes i even forget about the MRS...
eprovenzano:
Two things I think can really make the KX woods friendly. The 1st, I think most here would agree, the best change you can make is to add a flywheel weight. It really tames the "hit" and gives you a better spread of power (I have an 11 oz weight). The 2nd in my opinion, it to adjust gearing. (I dropped a tooth on the front sprocket, and went up one in the rear.)
I ride with a lot of quads. Its usually slow going, 1st-2nd gear most of the time. To make it easier on me, The bike is like a tractor. It can be lugged through the tight technical trails, but also is a blast to go hill climbing, it just keeps on going... Due to the gearing changes, I wish it had a 6 speed tranny, as I've lost some top speed, but I'll take the power at the bottom vs. top speed. I don't need to go 100 mph anymore, I'm to d**n old, and it takes a lot longer to heal when something goes wrong...
My son likes the changes so much, he's taken over my 250. :cry:
Another thought... Guys correct me if I'm wrong, (like that's never happened before) but I believe the FMF fatty pipe will also add to the bottom end.
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