I weighed this unit as delivered, for those who may be unfamiliar with how they come, here is an overview. Unit starts and runs (very little fuel), coolant full, brake, suspension and chain case fluids full, some injection oil (pint-ish), drive belt (no spare), hardware and tools in bag on tunnel. I use a suspension scale and tare with three tie downs. This unit weighed 452lbs +/- a couple lbs as most scales vary. On the very same scale the Arctic M8 153 SP as delivered was 476lbs. Should be exciting to how light we get the new RMK as our builds progress.