At the heart of the 2004 Yamaha PW 80 enduro - offroad motorcycle, Yamaha features a 79 cc (4.8 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 4.7 HP (3.4 kW) at 4,800 rpm while maximum torque reaches 6.3 Nm (4.6 lb-ft), transferring power to the rear wheel through a 3-speed gearbox and chain final drive. With a specific output of 59.5 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the PW 80 measures 57 kg (126 lbs) dry. Rider ergonomics and chassis geometry center around a 635 mm (25 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,055 mm (41.5 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Yamaha archive, this model family spans 4 indexed model years from 2002 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
59.5 HP/L
Standover Height
635 mm (25 in)
Engine
Displacement79.0 ccm (4.82 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power4.7 HP (3.4 kW)) @ 4800 RPM
Torque6.3 Nm (0.6 kgf-m or 4.6 ft.lbs)
Compression6.6:1
Bore x Stroke47.0 x 45.8 mm (1.9 x 1.8 inches)
Valves/Cylinder1
CoolingAir
Transmission
Gearbox3-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic fork
Front Travel110 mm (4.3 inches)
Rear SuspensionMonocross
Rear Travel95 mm (3.7 inches)
Wheelbase1055 mm (41.5 inches)
Ground Clearance185 mm (7.3 inches)
Wheels & Brakes
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight57.0 kg (125.7 pounds)
Power/Weight0.0823 HP/kg
Seat Height635 mm (25.0 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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
