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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
PW50 porting
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[QUOTE="David Trustrum, post: 154760, member: 21529"] Find a book like Graham Bell’s 2 stroke tuning. It will tell you how to decide yourself as I doubt there will be a bunch of people with razor tuned PW50s on this forum. Seriously this will point you in the right direction for such a basic engine. Gearbox will of course be the limiting factor to how much power or rather power curve vs ratio. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
PW50 porting
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