2011 KTM 150 SX, The perfect combination of the playful handling of a 125 coupled with engine power that comes close to that of a 250. Alongside the completely new bodywork for all two-stroke models, the 150 SX has been equipped with a new silencer, new airbox and the optimised intake flange between filter and carburettor. Hence, it delivers perceptibly more power from its 143.6 cubic-centimeters.