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How Much Power Gain With Big Bore Kit?
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[QUOTE="oldfrt613, post: 996312, member: 62011"] My guess by just looking at the displacement increase is in the neighborhood of 1.5-2 HP, roughly 5%. I believe when we discussed this with Eric his comment was if we did an overbore and port job that 75% of the gain would be due to porting, 25% to displacement increase. The moral, spend your money on porting now and save the overbore for a worn cylinder. [/QUOTE]
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Dirt Bike Brands - Other
How Much Power Gain With Big Bore Kit?
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