How fast?

[greenforeman05]

About how fast will my 70 with a Honda ATC90 motor go? It has the high/low transmission also.

[ATCnut]

Depends on what you use for sprockets front and rear, and on what surface (pavement is faster than sand).

It is impossible to say without more information.

[greenforeman05]

Whatever the stock sprocket is of the 90 and a 70 frame and axle. I will be riding on pavement and very short grass.

[AKPolack]

why guess? gps isn't that expensive...or you may have a friend with one that would be willing to spend a day/weekend helpin u with some numbers...