I have a 2005 YZ250F and the sprocket I pulled off is a 48 tooth. I do mostly trail riding so I picked up a 50 tooth sprocket. I'm just in the midst of installing it... and noticing I can't line up the axle with the guide holes through the wheel. Now that I think about it, I probably need a longer chain, right? Or should this work fine, and I obviously still need to move things around?