Approved Used Ironhead exhaust fitted. service history his is the Imperiale 400, the Benelli motorcycle with a classic taste and a reinterpretation of a historical model of the Benelli-MotoBi range produced in the 1950s. An authentic bike with a pure spirit that today finds its essence in an elegant, modern, retro motorcycle. The beating heart of the Imperiale 400 is the new single-cylinder, four-stroke, air-cooled engine with a single overhead camshaft timing system and electronic fuel injection offering maximum fuel economy in any riding conditions. Its maximum power is 21 hp (15.5 kW) at 5500 rpm, with torque of 29 Nm (2.95 kgm) at 4500 rpm. Extremely easy to ride and handle, the Imperiale 400 has a compact and durable double-cradle frame made of steel tubes and plates. The front suspension features a telescopic fork with legs having a 41 mm diameter and 121 mm travel, while the rear has a swinging arm with double shock absorber and travel of 55 mm.