Motorcycles Motocross 6108 PSN . And this will continue to be the case what with new bodywork and significantly revamped suspension. the KTM 125 SX has been the springboard to a professional career for many a hungry young rider. 2013 KTM 125 SX Nice How can you identify future champions By the bike they ride. Driven by the powerful 2-stroke engine with exhaust control system and 6-speed transmission the lightest bike in its class has long been at the top of the pile...