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Iit depends on what kind i have a 125 dirt bike it is pritty fast

A number of variables must be considered, Gearing would be one, also how rough the track is, the rougher the track the slower you go, your weight would be another, your ability is the determining factor. all bikes go fast enough to hurt you, motorized or not.

I have a rm 125 it screems i can scare me sometimes but it is all tricked out i have v-Force 3 reeds pro taper contour bars and fmf gold series rev pipe and a titanium 2 slip on silencer and a ton of othe crap the only thing stock is the frame so u can make them faster

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13y ago

What else can I help you with?