yamaha 2021 YZ125


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. 

Agility. Ability. Victory.

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.

At a glance

  •     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

Engine Type

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

Displacement CC


Bore X Stroke

54.0 mm x 54.5 mm

Compression Ratio

8.6 ~ 10.7 : 1

Oil Capacity


Fuel Tank Capacity




Transmission Type

54.0 mm x 54.5 mm

Dimensions LxWxH

2137 mm x 825 mm x 1295 mm


1445 mm

Ground Clearance

363 mm

Kerb Weight

94 kg

Tyre Size Front

80/100-21 51M

Tyre Size Rear

100/90-19 57M

Brakes Type Front

Hydraulic single disc, 250 mm

Brakes Type Rear

Hydraulic single disc, 245 mm