Yamaha's profilation of this bike With a range of significant technical changes being introduced for 2004, the latest TMAX offers even higher levels of engine and chassis performance. The overall horsepower and torque output of the 500cc twin cylinder 4-stroke engine is increased by the fitment of a new electronic fuel injection system, and compression ratio has been raised to 11:1.

General information
Model:	Yamaha Tmax 500
Year:	2004
Category:	Scooter
Engine and transmission
Displacement:	449.00 ccm (27.40 cubic inches)
Engine type:	Two cylinder boxer
Stroke:	4
Power:	43.71 HP (31.9 kW)) @ 6500 RPM
Torque:	47.60 Nm (4.9 kgf-m or 35.1 ft.lbs) @ 4850 RPM
Compression:	11.0:1
Bore x Stroke:	66.0 x 73.0 mm (2.6 x 2.9 inches)
Fuel system:	Injection
Cooling system:	Liquid
Physical measurements
Dry weight:	205.0 kg (451.9 pounds)
Seat height:	795 mm (31.3 inches) If adjustable, lowest setting.
Overall height:	1,410 mm (55.5 inches)
Overall length:	2,235 mm (88.0 inches)
Overall width:	775 mm (30.5 inches)
Ground clearance:	130 mm (5.1 inches)
Wheelbase:	1,575 mm (62.0 inches)
Chassis and dimensions
Frame type:	Front suspension system
Front Suspension:	Telescopic Fork
Front Suspension travel:	120 mm (4.7 inches)
Rear Suspension:	Swingarm
Rear Suspension travel:	120 mm (4.7 inches)
Front tyre dimensions:	120/70-14
Rear tyre dimensions:	150/70-14
Front brakes:	Double disc
Front brakes diameter:	267 mm (10.5 inches)
Rear brakes:	Single disc
Rear brakes diameter:	267 mm (10.5 inches)
Speed and acceleration
Power/weight ratio:	0.2132 HP/kg