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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Who has a Gorr KX265?
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[QUOTE="motometal, post: 1214478, member: 24727"] I did the mo better porting but not the overbore FWIW, bike ran decent with same jetting but I was able to lean it a bit after the port work. Remember guys, 265 is only 6% more displacement and it's going through the same carb and exhaust etc. A 15cc overbore is great if your cylinder needs replating anyway, but I wouldn't do it to a "good" cylinder just for the moderate increase in displacement. I think a lot of folks get both port work and overbore done at the same time, and assume that a lot of the power increase is from the overbore when it's really mostly the porting. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Who has a Gorr KX265?
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