Hi, im new to this site and am looking for advice, just wondering what back sprocket i would need to make my bike come up. anyone got any advice/ideas, let me no.

To make your bike come up????????????

Do you mean come up to do wheelies............or more speed.......or more acceleration?

wheelies

drop 1 tooth off the front or add 3 to the rear and you get about the same result. That said the front will be cheaper and easier to change back and forth if your going on a long trip where you wouldn't want to be reving so high in top gear. You would probably also need an longer chain to fit in a bigger rear