The Road King is powered by a Milwaukee-Eight 114 engine that can provide up to 95 horsepower at 5,020 rpm and 122 ft-lb of torque. It has an estimated city/highway rating of 43 miles per gallon.

The Road King's seat height is 26.4 inches and the bike has a 4.9-inch ground clearance compared to the Road Glide's slightly higher seat height of 26.6 inches, and notably higher ground clearance ...