At the heart of the 2016 Honda CB400A sport motorcycle, Honda features a 399 cc (24.4 cu in) liquid-cooled in-line four, four-stroke configuration. In factory specification, peak output is rated at 52.3 HP (38.2 kW) at 10,500 rpm while maximum torque reaches 38 Nm (28 lb-ft) at 9,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 131.1 HP per liter and a 1,000 rpm working window between peak torque (9,500 rpm) and peak power (10,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the CB400A measures 195 kg (430 lbs) dry, translating to a power-to-weight ratio of 0.27 HP/kg (3.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 755 mm (29.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,560 mm (61.4 in) wheelbase engineered for planted straight-line stability. The 18-liter (4.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 2 indexed model years from 2016 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
131.1 HP/L
Power-to-Weight
0.27 HP/kg (3.73 kg/HP)
Power Band Window
9,500–10,500 rpm
Standover Height
755 mm (29.7 in)
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsIn-line four, four-stroke
Power52.3 HP (38.2 kW)) @ 10500 RPM
Torque38.0 Nm (3.9 kgf-m or 28.0 ft.lbs) @ 9500 RPM
Compression11.3:1
Bore x Stroke55.0 x 42.0 mm (2.2 x 1.7 inches)
Valves/Cylinder4
Fuel SystemInjection. PGM-FI
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionFully transistorised with electronic advance
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet multi-plate coil spring
Performance
ExhaustStainless steel
Chassis
Frame TypeDouble cradle
Rake25.5°
Trail90 mm (3.5 inches)
Front Suspension41mm Showa telescopic fork with pre-load adjustment
Front Travel118 mm (4.6 inches)
Rear SuspensionTwin remote reservoir Showa shock with spring pre-load adjustment
Rear Travel105 mm (4.1 inches)
Wheelbase1560 mm (61.4 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/60-ZR17
Rear Tyre160/60-ZR17
Front BrakesDouble disc. Four-piston Nissin hydraulic callipers.
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.
