Positioned in Yamaha's minibike, cross motorcycle lineup, the 2002 Yamaha PW 50 pairs a 49 cc (3 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 2.7 HP (2 kW) at 5,500 rpm while maximum torque reaches 3.8 Nm (2.8 lb-ft) at 4,500 rpm. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches) with a 6.6:1 compression ratio.
On the scales, the PW 50 measures 37 kg (82 lbs) dry. Rider ergonomics and chassis geometry center around a 485 mm (19.1 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 855 mm (33.7 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 2002 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power Band Window
4,500–5,500 rpm
Standover Height
485 mm (19.1 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power2.7 HP (2.0 kW)) @ 5500 RPM
Torque3.8 Nm (0.4 kgf-m or 2.8 ft.lbs) @ 4500 RPM
Compression6.6:1
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
CoolingAir
Chassis
Front Travel60 mm (2.4 inches)
Rear Travel50 mm (2.0 inches)
Wheelbase855 mm (33.7 inches)
Ground Clearance105 mm (4.1 inches)
Wheels & Brakes
Front BrakesExpanding brake
Rear BrakesExpanding brake
Dimensions & Weight
Dry Weight37.0 kg (81.6 pounds)
Power/Weight0.0730 HP/kg
Seat Height485 mm (19.1 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.
