Built around Honda's scooter motorcycle platform, the 2009 Honda SW-T400 relies on a 399 cc (24.4 cu in) liquid-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 38.5 HP (28.1 kW) at 8,000 rpm while maximum torque reaches 37.8 Nm (27.9 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 96.5 HP per liter and a 1,500 rpm working window between peak torque (6,500 rpm) and peak power (8,000 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 SW-T400 measures 247 kg (545 lbs) dry, translating to a power-to-weight ratio of 0.16 HP/kg (6.42 kg per horsepower). Rider ergonomics and chassis geometry center around a 740 mm (29.1 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,600 mm (63 in) wheelbase engineered for planted straight-line stability. The 16-liter (4.2 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 2009 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
96.5 HP/L
Power-to-Weight
0.16 HP/kg (6.42 kg/HP)
Power Band Window
6,500–8,000 rpm
Standover Height
740 mm (29.1 in)
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power38.5 HP (28.1 kW)) @ 8000 RPM
Torque37.8 Nm (3.9 kgf-m or 27.9 ft.lbs) @ 6500 RPM
Bore x Stroke64.0 x 62.0 mm (2.5 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Chassis
Wheelbase1600 mm (63.0 inches)
Wheels & Brakes
Front Tyre120/80-14
Rear Tyre150/70-13
Front BrakesSingle disc
Front Brake Ø276 mm (10.9 inches)
Rear BrakesSingle disc
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Dry Weight247.0 kg (544.5 pounds)
Power/Weight0.1558 HP/kg
Seat Height740 mm (29.1 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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
