At the heart of the 2025 Yamaha PW50 minibike, cross motorcycle, Yamaha features a 49 cc (3 cu in) air-cooled single cylinder, two-stroke configuration. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches) with a 6.0:1 compression ratio.
On the scales, the PW50 measures 40.8 kg (90 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 475 mm (18.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 856 mm (33.7 in) wheelbase engineered for quick, flickable steering geometry. The 2.01-liter (0.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 18 indexed model years from 2008 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
475 mm (18.7 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed-valve induction
Compression6.0:1
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Fuel SystemCarburettor. Mikuni VM12
IgnitionCDI
LubricationSeparate 2-stroke oil tank
CoolingAir
Transmission
GearboxAutomatic
Final DriveShaft drive (cardan) (final drive)
ClutchWet centrifugal automatic clutch
Chassis
Frame TypeSteel tube backbone
Rake25.5°
Trail50 mm (2.0 inches)
Front SuspensionTelescopic fork 26mm
Front Travel61 mm (2.4 inches)
Rear SuspensionUnit swingarm
Rear Travel51 mm (2.0 inches)
Wheelbase856 mm (33.7 inches)
Ground Clearance94 mm (3.7 inches)
Wheels & Brakes
Front Tyre2.50-10
Rear Tyre2.50-10
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Wheels3-spoke
Dimensions & Weight
Weight incl.40.8 kg (90.0 pounds)
Seat Height475 mm (18.7 inches) If adjustable, lowest setting.
Overall Height706 mm (27.8 inches)
Overall Length1245 mm (49.0 inches)
Overall Width610 mm (24.0 inches)
Fuel Capacity2.01 litres (0.53 US gallons)
Other
StarterKick
Color OptionsTeam Yamaha Blue
Warranty90 Day Limited Factory Warranty
Notes
An adjustable throttle stop screw keeps the adult in charge of power.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
