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jturnbull329

best power gain for a 03 yz450f

7 posts in this topic

Port the head. Done by someone who knows what they are doing will benefit more than a pipe or big bore.

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Port the head. Done by someone who knows what they are doing will benefit more than a pipe or big bore.

Careful. Done by someone who doesn't know what he's doing it can cost you more than just money.

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Is it down on power since you bought it? Maybe its times to split the cases for a new crank and then put a new piston in it.

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no its got a tonn of power, and i dont think ive lost any but i just want more power. I think im gonna put a new topend in it this winter and maybe port it

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