Engineered by Yamaha for the scooter motorcycle segment, the 2015 Yamaha YW125 BeeWee features a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke configuration. Internal engine geometry specifies a bore and stroke of 52.4 x 57.9 mm (2.1 x 2.3 inches) with a 10.0:1 compression ratio.
On the scales, the YW125 BeeWee measures 121 kg (267 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 6-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 2 indexed model years from 2013 to 2015, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
780 mm (30.7 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression10.0:1
Bore x Stroke52.4 x 57.9 mm (2.1 x 2.3 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTCI
LubricationWet sump
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Chassis
Front SuspensionTelescopic fork
Front Travel78 mm (3.1 inches)
Rear SuspensionUnit swing
Rear Travel71 mm (2.8 inches)
Wheelbase1290 mm (50.8 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-12
Rear Tyre130/70-12
Front BrakesSingle disc
Front Brake Ø189 mm (7.4 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø150 mm (5.9 inches)
Dimensions & Weight
Weight incl.121.0 kg (266.8 pounds)
Seat Height780 mm (30.7 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.
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.
