The Honda Valkyrie is a motorcycle that was manufactured by Honda from 1996 to 2003. It was designated GL1500C in the US market and F6C ("Flat Six Custom") in other markets. The Valkyrie engine is a 1,520 cubic centimetres (93 cu in) liquid cooled, horizontally opposed flat-six engine transplanted from Honda's Gold Wing model, unlike the V-twin engine commonly found on "cruiser" style motorcycles. In its transplant from the Goldwing, the most notable engine changes were the camshaft and the change to six individual 28 mm carburetors, one for each cylinder, changes which increased power and torque.