frame size ?

Whats the minimum frame dimension requirements for a 80cc chinese engine. I was going to get one with a slant head. My bike frame says 18". thanks

That will work...you do mean frame size, not wheel size, right?

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yes its an 18" frame size

18" should be fine, but it's kind of hard to say going by frame size. There are a few different ways to measure frame size. If you have about 13" inside the frame from bottom bracket to the top tube you should be ok. It may start getting tight any less then that or depending on the angle of your bottom tube etc.

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