The 2018 Road Glide Special differs from the base model in many ways aesthetically, but it still has the 107 Milwaukee-Eight engine pushing it forward. The Milwaukee-Eight engine was introduced in 2017 and is a single-cam, 4-valves-per-head V-Twin. We put our ’18 FLTRXS on our Dyno to see what the numbers were in the Horsepower and Torque department. We got 77.34 hp and 101.46 tq.