This has probably been discussed at length before so sorry if this is redundant. I have a 2011 KX 250f and I ride primarily at one track. The bike came with 50 tooth rear and I remember immediately not liking how quick I ran out of 2nd gear. I bought right away a 49 tooth rear and that is what I have been using since. On my primary track there are quite few spots where I wish 2nd would pull a little longer but it's just so busy to shift to 3rd and then right back to 2nd. I thought I'd go with a 48 rear and that might give me that little extra I am looking for. There is one spot on the track with a triple jump right out of a corner. Not a lot of guys hit this jump since it's so close to the corner. For me I just can't bring myself to go off this jump with my bike revved to the moon like that and I just don't have the speed in 3rd (or the shift would happen right on the face of the jump practically) to make it I'm not sure. I've seen quite a few guys carted off on this jump so it's a little scary but it makes a big difference in lap times to make it so I'm thinking that a change in gearing might just be the thing to get me over the jump. Or if I should just consider going way up and being in 3rd a lot more than I am now. The way I ride now I only have two shifts on the track. I have heard a lot of talk about the classic bad habit is revving the bike so much and I think I am guilty of it I would probably go faster if I was lugging more in 3rd. Just wanted to get some advice from you guys who know more about this than me.