300ex enigne

[Honda TRX250ex]

im rebuilding a TRX 250x
im thinking about getting a 300ex engine for it
what mods can i do to that engine to make it go faster???

[Ripitupfilms]

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[bradley300]

same things as any thing else, first get a good exhaust and header. good air filter, then port it, big bore....

[fastrider450r]

its pretty self explainatory.