Since 1993, Pro Circuit Kawasaki (a factory supported team) has won numerous AMA Supercross and Motocross championships in the small displacement classes. In 2011, Broc Tickle won the AMA Supercross Lights Western Championship, and Dean Wilson won the AMA Motocross Lites Championship. The KX250F on which both riders won their championships were 2011 production models featuring SFF (Separate Function front Fork), the first use on a production machine, and new fuel-injected engines. They also featured larger radiators, oil coolers and other Pro Circuit tuning tricks.