2015 KTM 450 SX-F, With the 450 SX-F, KTM has a winning motorcycle in its range, which derives its potential from a high-capacity engine and a chassis perfectly tuned to the power unit. The 450 SX-F is the no. 1 choice for the official KTM factory team in the AMA Championship. No wonder; the compact SOHC engine guarantees brutal yet controllable power with its revolutionary injection technology. Above all, the 450 SX-F scores highly compared with other large 4-strokes in terms of performance and handling. Ideal for every motocrosser who sees plenty of torque, ample on-tap power and a controllable ride as their complete package.