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who knows how to make these yz450f really fly I drag race one?/

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I was wondering if there is someone or a bussiness or company or who ever that knows how to make these yz450f fly I have the head ported and stage 2 hot cams which i did not see any change and not happy with... je 12:8 piston It should have picked up a lot but didn't I know because I drag race it .....dirt drags 500ft and times only changed a little and mph only went up about 3 or 4 mph should have been a lot more.. and the 3 or 4 mph gain was piston and port work then put the cams in and no change...

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4 mph is substantial

Since your time didn't change your just spinning your tire.

Drag racing is all about traction and reaction time if you have power.

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