2015 Suzuki DR-Z 400SM, The Suzuki DR-Z400SM is a street legal bike for serious dirt bike enthusiasts on pavement roads. Its not uncommon to take the SuperMoto down twisty forest trails as well as tight canyon corners. Its 398 cc liquid-cooled, four-stroke engine provides strong low-rpm torque and crisp throttle response for any of these occasions. The key difference from the DR-Z400SM and the DR-Z400S are the inverted forks. Inverted front forks contributes to less unsprung weight and improved overall handling. The SuperMoto also comes with wider rims and stickier tires than the dual-purpose 400S.