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Model Description

Agility. Ability. Victory.

To get to the top in motocross you need to put in the hours at the racetrack. Work hard on your fitness. And you’ve got to make sure you choose the right bike. Light in weight but heavy on the adrenaline factor, the YZ125 is the most fun that you can have on two wheels.

Nothing compares to the YZ125 experience. With its explosive 2-stroke engine power, super-light aluminium chassis and outstanding agility, the YZ125 accelerates, turns and brakes like nothing else. Its industry-leading speed sensitive forks give you precision steering for faster cornering – and the Monocross rear end soaks up the bumps to ride with ease.

The compact body enables you to rapidly shift your body weight and throw the YZ around at will – and its razor sharp styling and coordinated blue wheels show off its factory racer DNA. Discover the ultimate lightweight 2-stroke. And aim for the top.


Icon Blue


  • YZ-F type Monocross rear suspension system
  • Free-revving and compact 125cc, 2-stroke engine
  • Ultra-light semi-double cradle aluminium frame
  • Fast-action clutch adjuster mechanism
  • YZ-F type 48mm forks, separate air/oil function
  • Easy to adjust 38mm Keihin carburettor
  • Wider footrests for increased controllability
  • Modern bodywork for a lean and sharp image
  • 2-stroke engine technology for easier maintenance
  • Wide range of genuine accessories available
  • GYTR kit available

Model Specification

  • Engine

    Engine Type

    liquid-cooled, 2-stroke, Forward-inclined single cylinder, reed valve with YPVS



    Bore x Stroke

    54.0 mm x 54.5 mm

    Compression Ratio

    8.6 ~10.7 : 1

    Maximum Power

    Maximum Torque

    Starter System



    Constant Mesh, 6-speed

    Lubrication System


    Clutch Type

    Ignition System

    Final Transmission

    Fuel Consumption

    CO2 Emissions

    Fuel System

  • Dimensions

    Oil Tank Capacity

    0.7 litres

    Fuel Tank Capacity

    8.0 litres

    Length (mm)

    2,137 mm

    Width (mm)

    825 mm

    Height (mm)

    1,295 mm

    Wheel Base (mm)

    1,445 mm

    Weight (kg)

    94 kg

    Ground Clearance (mm)

    363 mm

  • Frame

    Front Tyre

    80/100-21 51M

    Rear Tyre

    100/90-19 57M


    Caster Angle


    Front Suspension System

    Rear Suspension System

    Front Travel

    Rear Travel

    Front Brake

    Rear Brake