01 yz80 top end?

[J.perez 70]

I have a bigger rear sprocket on my 80 and bored out the pistons,it runs like a champ and that thing will grab a gear and get sum gone but i dont have a very high top end speed. any suggestionson how to get that top end speed?

 

[flyingfuzzball]

by changing the sproket you are reducing the top speed for more acceleration. switching to stock will probably give you the best spread.