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Dirt Bike Brands - Other
XR motor in a CRF/CR frame?
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[QUOTE="Matt Fisher, post: 1168867, member: 30255"] I think Yamaha is the only one with most of the pieces still in production. WR250 chassis, TTR250 motor with a larger crank and cylinder to make around 350-400cc's; use the WR's FCR carb. Add an oil cooler to one side of the tank, enlarge the tank on the other side for more capacity. There's an air cooled medium+ displacement bike with good suspension, easy to build, maintain, and it'd still have 6 gears. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
XR motor in a CRF/CR frame?
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