Built around Yamaha's scooter motorcycle platform, the 2004 Yamaha Majesty 400 features a 395 cc (24.1 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 33.5 HP (24.5 kW) at 7,250 rpm while maximum torque reaches 36.3 Nm (26.8 lb-ft) at 6,000 rpm. With a specific output of 84.8 HP per liter and a 1,250 rpm working window between peak torque (6,000 rpm) and peak power (7,250 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Majesty 400 measures 197 kg (434 lbs) dry, translating to a power-to-weight ratio of 0.17 HP/kg (5.88 kg per horsepower). Rider ergonomics and chassis geometry center around a 750 mm (29.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,565 mm (61.6 in) wheelbase engineered for planted straight-line stability.
Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 2004 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
84.8 HP/L
Power-to-Weight
0.17 HP/kg (5.88 kg/HP)
Power Band Window
6,000–7,250 rpm
Standover Height
750 mm (29.5 in)
Engine
Displacement395.0 ccm (24.10 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsTwo cylinder boxer, four-stroke
Power33.5 HP (24.5 kW)) @ 7250 RPM
Torque36.3 Nm (3.7 kgf-m or 26.8 ft.lbs) @ 6000 RPM
Compression10.6:1
Bore x Stroke83.0 x 73.0 mm (3.3 x 2.9 inches)
Fuel SystemInjection
CoolingLiquid
Chassis
Front SuspensionTelescopic
Front Travel120 mm (4.7 inches)
Rear SuspensionUnit swing
Rear Travel104 mm (4.1 inches)
Wheelbase1565 mm (61.6 inches)
Ground Clearance120 mm (4.7 inches)
Wheels & Brakes
Front Tyre120/80-14
Rear Tyre150/70-13
Front BrakesSingle disc
Front Brake Ø267 mm (10.5 inches)
Rear BrakesSingle disc
Rear Brake Ø267 mm (10.5 inches)
Dimensions & Weight
Dry Weight197.0 kg (434.3 pounds)
Power/Weight0.1702 HP/kg
Seat Height750 mm (29.5 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.
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.
