2018 Harley Davidson Road King Special, 2018 Harley-Davidson Road King Special: Swapping chrome for black and powered by the muscular Milwaukee-Eight® 107 engine, the new Road King Special motorcycle Harley-Davidson s touring line in a dramatic new styling direction, expressing a contemporary perspective on the classic Road King model. If you want to know what ruling the road truly feels like, reach for the mini-ape handlebars on the ROAD KING® Special motorcycle and send some fuel to its Milwaukee-Eight® 107 engine. Harley-Davidson Touring Story Long haul comfort. No restraints. Harley-Davidson Touring models feature long haul comfort combined with power that will unleash your soul. Spanning decades of heritage and nostalgia, Touring bikes began their lineage in 1936 when the Motor Company introduced a new engine design nicknamed the Knucklehead. From that heritage grew the powerful Milwaukee Eight engine with more power, comfort, and handling to go the distance, making piling up the miles rewarding and comfortable for both rider and passenger.