At the heart of the 2008 Yamaha TMAX scooter motorcycle, Yamaha features a 499 cc (30.5 cu in) liquid-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 42.9 HP (31.3 kW) at 4,800 rpm while maximum torque reaches 6.3 Nm (4.6 lb-ft), transferring power to the rear wheel through chain final drive. With a specific output of 86 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the TMAX measures 203 kg (448 lbs) dry, translating to a power-to-weight ratio of 0.21 HP/kg (4.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,580 mm (62.2 in) wheelbase engineered for planted straight-line stability. The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 12 indexed model years from 2007 to 2018, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
86 HP/L
Power-to-Weight
0.21 HP/kg (4.73 kg/HP)
Standover Height
800 mm (31.5 in)
Engine
Displacement499.0 ccm (30.45 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power42.9 HP (31.3 kW)) @ 4800 RPM
Torque6.3 Nm (0.6 kgf-m or 4.6 ft.lbs)
Compression11.0:1
Bore x Stroke66.0 x 73.0 mm (2.6 x 2.9 inches)
Fuel SystemInjection. Electronic Fuel Injection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCI
LubricationDry sump
CoolingLiquid
Transmission
Final DriveChain (final drive)
ClutchWet, multiple-disc automatic
Chassis
Frame Type-
Front SuspensionTelescopic forks
Front Travel110 mm (4.3 inches)
Rear SuspensionSwingarm
Rear Travel95 mm (3.7 inches)
Wheelbase1580 mm (62.2 inches)
Ground Clearance125 mm (4.9 inches)
Wheels & Brakes
Front Tyre120/70-15
Rear Tyre160/60-15
Front BrakesDouble disc
Front Brake Ø267 mm (10.5 inches)
Rear BrakesSingle disc
Rear Brake Ø267 mm (10.5 inches)
Dimensions & Weight
Dry Weight203.0 kg (447.5 pounds)
Power/Weight0.2114 HP/kg
Seat Height800 mm (31.5 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.
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.
