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Engine Mods??
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[QUOTE="stevied125, post: 1082631, member: 71084"] I have a 2005 YZ 125. Looking to do some motor work after the first of the year. I have seen people talking about the 144 kit, also Athena offers the Factory WORCS series head and high compression piston. Wondering which I could do to get the best performance and the most reliability. Or should I just stick with a really good port job? [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Engine Mods??
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