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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F aftermarket exhaust, decisions?!
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[QUOTE="will pattison, post: 62082, member: 19283"] for whatever it's worth, i raced a yz250f in a texas cross country event this weekend. it has an fmf power core iv s.a. with stock header, and the bike absolutely ripped. the horsepower gain over stock is very noticable. this pipe, like all the fmf power core's for yz's that i have tried, seems to yield a mid-to-top kind of powerband. ------------------ will pattison engineer, racer ignition www.ignitioninc.com [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
YZ250F aftermarket exhaust, decisions?!
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