The 2019 Suzuki RM-Z450 motocross bike was all-new last year. It as mildly upgraded for 2019 and we ran it on our in-house Dynojet dynamometer to find out how much power it makes. Suzuki’s flagship motocross bike produced 50.12 hp at 8,380 rpm and 33.13 pound-feet of torque at 7,350 rpm.