Imperiale 400

2018 Benelli Imperiale 400 Technical Analysis & Specification Breakdown

Positioned in Benelli's classic motorcycle lineup, the 2018 Benelli Imperiale 400 features a 373.5 cc (22.8 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 19.7 HP (14.4 kW) at 5,500 rpm while maximum torque reaches 28 Nm (20.7 lb-ft) at 3,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 52.7 HP per liter and a 2,000 rpm working window between peak torque (3,500 rpm) and peak power (5,500 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the Imperiale 400 measures 200 kg (441 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (10.15 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,450 mm (57.1 in) wheelbase engineered for balanced agility and highway composure.

Within MotoLibrary's Benelli archive, this model family spans 8 indexed model years from 2018 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.