The Dyna is dead. Harley-Davidson has scrapped the familiar twin-shock chassis, moving all models for 2018 over to the softail design. The 2018 Fat Bob gains the most from the change, getting powerful dual disc brakes, a more sporty 28° rake, adjustable rear monoshock, and USD Showa forks — a nod from Harley that the times have changed, and they aren't afraid to change with them. Engine choices are the torquey 107 and 114 cubic-inch Milwaukee Eights that move a lighter 650-pound bike. Change used to come slowly at Harley-Davidson, but the most traditional motorcycle manufacturer in the world isn't resting on its name any longer.