The BUELL M2 Cyclone is a lightweight, street-legal sport bike made by the now-defunct American motorcycle company Buell Motorcycle Company. The bike was powered by a 984 cc, four-stroke, 45-degree V-Twin engine and was known for its nimble handling and aggressive performance. It was produced from 1998 to 2002 as a successor to the company's M2 Thunderbolt model.