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Two-stroke evolution.

The new YZ125 is the fastest, lightest and most agile 125cc production motocross bike ever built by Yamaha. This winning 2-stroke is completely redesigned to give you stronger and more useable power – and the ultra-slim chassis is equipped with powerful brakes and refined suspension that deliver the performance you need to get on the podium.

Featuring all-new engine internals as well as a redesigned YPVS (Yamaha Power Valve System) and a new Keihin powerjet carburettor for explosive acceleration, the YZ125 develops a higher peak power that keeps you way out front – and a slicker shifting 6-speed transmission and revised gear ratios help to shave precious seconds off your lap times.

Its sharp new bodywork is slimmer than ever, giving you increased controllability on the ground and in the air – and the flatter seat and new sidepanels allow you to move easily around the bike when braking and accelerating hard. The YZ125 gives you more power and increased agility – now just add your ability and prepare to enter the victorYZone!

Colours

Icon Blue

Details

  • Increased power and better agility
  • Athletic new ultra-slim bodywork
  • New Keihin Powerjet carburettor with TPS
  • Smooth shifting 6-speed transmission
  • High-efficiency air intake
  • Race-developed ergonomics
  • Best-in-class KYB suspension
  • Powerful braking system
  • New rear frame
  • New generation colour and graphics

Model Specification


  • Engine

    Engine Type

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

    Displacement

    125cc

    Bore x Stroke

    54.0 mm x 54.5 mm

    Compression Ratio

    8.2-10.1 : 1

    Maximum Power

    Maximum Torque

    Starter System

    Kick

    Transmission

    Constant Mesh, 6-speed

    Lubrication System

    Premix

  • Dimensions

    Oil Tank Capacity

    0.7 litres

    Fuel Tank Capacity

    7.0 litres

    Length (mm)

    2,135 mm

    Width (mm)

    825 mm

    Height (mm)

    1,295 mm

    Wheel Base (mm)

    1,440 mm

    Weight (kg)

    95 kg

    Ground Clearance (mm)

    365 mm

  • Frame

    Front Tyre

    80/100-21 51M

    Rear Tyre

    100/90-19 57M