I purchased a 2009 450 KTM SX-F that has been converted to a dual sport. With only 4 speeds I am looking for more top end speed. I am at 13/49 on gearing and have ordered a 14 tooth counter to see if that helps. Should I go drastic and start going smaller on the back? I know it will lose torque by doing that but at 60 I dont need to get myself into trouble! Dont ride a lot on the road but dont like turning 7k to do 55 either. Thanks in advance. Mike Gilbert