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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Rejet 250 ??
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[QUOTE="dirt bike dave, post: 84458, member: 18302"] The fact that your bike has been ported makes it very difficult for anyone to recommend jetting. In the USA, the KDX 250 was jetted too rich; I don't have mine anymore but I know I leaned out the main and the pilot several steps (i think to a 160 main, and a 38 pilot) as well has modified the slide from a #6 to a #7 cutout. With an FMF pipe, aftermarket silencer, KX250 head gasket, Boyesen reeds & rad valve and slightly opened up KIPS valves, the bike ran pretty good. Most guys also run a B8ES plug instead of the stock B9ES. Jetted pretty good for 4,000+- aboe sea level. BTW, the stock dual wall pipe weighs a ton; you can save a lot of weight with an aftermarket pipe. With an FMF pipe and a aftermarket silencer, the power will smooth out and rev higher, and the bike should lose its hard mid rpm hit. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Rejet 250 ??
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