The MK85 incorporates high strength gearing in our standard die-cast housing. The ratios, ranging from 20:1 to 41:1 allow this product to support vehicle weight up to 1500 lbs and speeds up to 12 mph. The motor, electromagnetic brake, harnessing, connectors, gear reduction and differential are all included in one easy-to-install package. Various motors, voltages and ratios are available. Axle configurations are made to order, including hubs if required.