2009 Basic 450 Info?

I just rebuilt the crank in a 09 kx450f, never run before while i had it. I rode it around (on street) and it felt kind of funny. Vibrated a little bit, sometimes it felt like the tranny. It kind of hestitated when giving it throttle, and it didnt seem as fast as i thought coming off a kx250f.

Anything i need to know about these or why these problems are occuring, is it normal? TIres are brand new so that could be causing vibration? Any help is much appreciated. Thanks.

Kind of vauge information, but a KX450 is normally smooth as silk, and free of vibration. Riding it on the street will make you think you hear/feel all sorts of things.

Kind of vauge information, but a KX450 is normally smooth as silk, and free of vibration. Riding it on the street will make you think you hear/feel all sorts of things.

What other information do you need? Yeah i need to go to an open field.

ALSO, what is the break in procedure? New piston and crank

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