Sprockets??

[rh250r]

Thinking of changing my sporkets, I've heard of some dropping 1 on the front and some of adding 1 on the front.
I ride mostly MX, any suggestions?
What improvements have you seen with this change?

[asjr39]

All depends on the size of the track. I carry 13,14 and a 15. I mainly run a 13 but like I said it differes from track to track. 13 reves a little higher but your mainly using 2,3,4 gears. with 14 your using 1-4. I run 13 50%