Those wanting to race in the Junior World Championship need look no further than this beauty to stay competitive. The free-revving and lively two-stroke engine has gained even more performance for the current season. If you thought that the 125 SX’s 125cc 1-cylinder 2-stroke engine was impressive, its newly developed exhaust expansion chamber has not only improved in quality, but it now comes with an optimized soundbox that ensures an extra shot of engine power that’s explosive and dependable, all at the same time.
The 125 SX also comes with a completely revamped frame made from high-quality chrome-molybdenum steel that’s extremely light and torsion-resistant. The bike is also characterized by a particularly balanced geometry that combines playful handling with razor-sharp precision. The two-strokes in the MX range from KTM are also now equipped with an elaborate linkage rear suspension system.
Linking the shock absorber via a lever system provides high progressiveness and wide adjustment ranges. Apart from the new linkage rear suspension, there is the new cast aluminum swingarm, which is designed for minimum weight while supplying optimum lateral stiffness and defined longitudinal flexibility. This makes a major contribution to the 125 SX’s excellent tracking stability, playful handling, and extreme traction, making for a bike that’s got plenty of substance to back up its long-standing tradition as a motocross bike that has a history of championship-winning performances.
Find out more about the KTM 125 SX after the jump.