Positioned in Benelli's classic motorcycle lineup, the 2025 Benelli Imperiale 400 pairs a 374 cc (22.8 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 20.8 HP (15.2 kW) at 5,500 rpm while maximum torque reaches 29 Nm (21.4 lb-ft) at 4,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 55.6 HP per liter and a 1,000 rpm working window between peak torque (4,500 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 197 kg (434 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.47 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 1,440 mm (56.7 in) wheelbase engineered for balanced agility and highway composure. The 12-liter (3.2 US gal) fuel tank paired with a rated consumption of 3.2 L/100 km provides an estimated theoretical range of roughly 375 km (233 miles) between fill-ups, while factory top speed is listed at 120 km/h (75 mph).
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.
Specific Output
55.6 HP/L
Power-to-Weight
0.11 HP/kg (9.47 kg/HP)
Power Band Window
4,500–5,500 rpm
Theoretical Range
~375 km (233 mi)
Engine
Displacement374.0 ccm (22.82 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power20.8 HP (15.2 kW)) @ 5500 RPM
Torque29.0 Nm (3.0 kgf-m or 21.4 ft.lbs) @ 4500 RPM
Compression8.5:1
Bore x Stroke72.7 x 90.0 mm (2.9 x 3.5 inches)
Valves/Cylinder2
Fuel SystemInjection. EFI
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionT.C.I
LubricationPressure splash
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet multi-plate
Performance
Top Speed120.0 km/h (74.6 mph)
Fuel Consumption3.20 litres/100 km (31.3 km/l or 73.51 mpg)
Greenhouse Gases74.2 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsCatalytic converter and oxygen sensors.
ExhaustPeashooter-style exhaust pipe
Chassis
Frame TypeDouble Cradle
Front SuspensionTelescopic forks, Ø 41mm
Front Travel121 mm (4.8 inches)
Rear SuspensionDouble shocks, coil spring oil damped
Rear Travel56 mm (2.2 inches)
Wheelbase1440 mm (56.7 inches)
Ground Clearance165 mm (6.5 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre130/80-18
Front BrakesSingle disc. ABS
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc. ABS
Rear Brake Ø240 mm (9.4 inches)
WheelsSpoked rims
Dimensions & Weight
Dry Weight197.0 kg (434.3 pounds)
Power/Weight0.1055 HP/kg
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
