I ride a 2011 KTM 300 XC-W, comes stock with 13:48 sprockets. My very 1st ride was disappointing because I never found a useable gear--3rd was too high usually, 2nd was too low. I changed to running the 50 tooth rear, that fixed everything for enduro woods riding. If I were in the desert I might run 14:48 or 14:50, that would take testing though. I've settled on 13:50 for enduro riding, and even for west Texas desert riding because there are not high speeds like District 37 desert racing in SoCal. What gearing do you guys prefer?