Heart pounding 109 cubic-inch (1783cc) V-Twin, Liquid Cooled with double overhead camshafts (DOHC) feature Four valves per Cylinder, and Digital Fuel Injection.Massive 112mm (4.409 in) Bore and a 90.5mm (3.563 in) Stroke, which turns into a class-leading bore/stroke ratio of 0.808:1.