Positioned in Yamaha's scooter motorcycle lineup, the 2004 Yamaha Tmax 500 relies on a 449 cc (27.4 cu in) liquid-cooled two cylinder boxer, four-stroke powerplant. In factory specification, peak output is rated at 43.7 HP (31.9 kW) at 6,500 rpm while maximum torque reaches 47.6 Nm (35.1 lb-ft) at 4,850 rpm. With a specific output of 97.3 HP per liter and a 1,650 rpm working window between peak torque (4,850 rpm) and peak power (6,500 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 Tmax 500 measures 205 kg (452 lbs) dry, translating to a power-to-weight ratio of 0.21 HP/kg (4.69 kg per horsepower). Rider ergonomics and chassis geometry center around a 795 mm (31.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,575 mm (62 in) wheelbase engineered for planted straight-line stability.
Within MotoLibrary's Yamaha archive, this model family spans 3 indexed model years from 2002 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
97.3 HP/L
Power-to-Weight
0.21 HP/kg (4.69 kg/HP)
Power Band Window
4,850–6,500 rpm
Standover Height
795 mm (31.3 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeTwo cylinder boxer, four-stroke
Engine DetailsTwo cylinder boxer, four-stroke
Power43.7 HP (31.9 kW)) @ 6500 RPM
Torque47.6 Nm (4.9 kgf-m or 35.1 ft.lbs) @ 4850 RPM
Compression11.0:1
Bore x Stroke66.0 x 73.0 mm (2.6 x 2.9 inches)
Fuel SystemInjection
CoolingLiquid
Chassis
Frame TypeFront suspension system
Front SuspensionTelescopic Fork
Front Travel120 mm (4.7 inches)
Rear SuspensionSwingarm
Rear Travel120 mm (4.7 inches)
Wheelbase1575 mm (62.0 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-14
Rear Tyre150/70-14
Front BrakesDouble disc
Front Brake Ø267 mm (10.5 inches)
Rear BrakesSingle disc
Rear Brake Ø267 mm (10.5 inches)
Dimensions & Weight
Dry Weight205.0 kg (451.9 pounds)
Power/Weight0.2132 HP/kg
Seat Height795 mm (31.3 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.
