Key difference between the DR-Z400SM and the DR-Z400S are the inverted front fork wide spoke-style wheels and 300mm diameter front brake disc. the inverted fork contributes to less unsprung weight and improved overall handling while the large brake and wider rims with high-grip tires offer an exhilarating sportbike experience. Motorcycles Street / Supermoto DX099611274452312341693 DX1 . It? s not uncommon to take the SuperMoto down a twisty forest road around tight canyon corners or glide through commuter traffic. This bike brings off-road soul and fun to paved roads. 2017 Suzuki DR-Z400SM 2017 DR-Z400SM Suzuki's SuperMoto DR-Z400SM is based on the proven DR-Z400S so it combines Supermotard style and features in a narrow lightweight street-legal package. Its 398cc liquid-cooled four-stroke engine provides strong low-rpm torque and crisp throttle response for any of these occasions...