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2025 125cc Lightweight 2-Stroke

The YZ125 represents an important evolution in Yamaha’s two-stroke lineage. Yamaha engineers put considerable thought into developing a motorcycle that would be both dominant on the racetrack and user-friendly for developing riders looking to bridge the gap between recreation riding and competitive motocross.
The advanced liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability. While the lightweight finely tuned chassis means nimble handling, more control and less rider fatigue – the ideal platform for advancing skills and gaining confidence.

  • Code

    YZ125

  • Length

    2135

  • Width

    825

  • Seat_Height

    975

  • Wheelbase

    1440

  • Clearance

    365

  • Height

    1295

  • Weight

    95

  • Category

    33

  • Engine

    Liquid-cooled, 2-stroke, reed-valve

  • Displacement

    125.0

  • Bore

    54.0 × 54.5

  • Spec_Config

    Motorcycle

  • Compression

    8.2 – 10.1 : 1

  • Lubrication

    Premix

  • Fuel

    PWK38S

  • Ignition

    CDI

  • Starter

    Kick

  • Fuel_Tank

    7

  • Oil

    N/A

  • Final_Trans

    Chain

  • Transmission

    Constant mesh 6-speed

  • Frame

    Aluminium controlled filled semi double cradle

  • Suspension_Front

    Telescopic forks, 300mm travel

  • Suspension_Rear

    Swingarm (link suspension), 315mm travel

  • Brakes_Front

    Hydraulic single disc, 270mm

  • Brakes_Rear

    Hydraulic single disc, 240mm

  • Tyres_Front

    80/100-21 Bridgestone Battlecross X20F

  • Tyres_Rear

    100/90-19 Bridgestone® Battlecross X20

  • Lpd_Switch

    1

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