2016 Suzuki RM-Z450 The RM-Z450 continues to evolve for 2016 delivering a higher level of performance while maintaining the great balance of the current model. The 449 cc 4-stroke liquid-cooled DOHC 4-valve fuel-injected engine along with new performance upgrades straight from the factory is the reason why champions choose Suzuki! Motorcycles Motocross DX41479934739190619014410 DX1