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Trail and Off Road


Agility. Ability. Victory.

Agility. Ability. Victory.

Which is where the YZ125 comes in. With its explosive engine power and ultra responsive aluminium chassis, this lightweight 125cc 2-stroke is a proven winner at the highest level.

This legendary dirt bike with its ultra responsive front and rear suspension systems for agile handling and fast cornering – and its sharp bodywork gives a cool factory look. Now all that’s missing from the package is…you.


  • YZ-F type Monocross rear suspension system
  • Fast-action clutch adjuster mechanism
  • Wide footrests for perfect controllability
  • 2-stroke engine technology for easier maintenance
  • Easy to adjust 38mm Keihin carburettor
  • Wide range of genuine accessories available
  • Free-revving and compact 125cc 2-stroke engine
  • Ultra-light semi-double cradle aluminium frame
  • Race-winning power with lightweight handling
  • YZ-F type 48mm forks, separate air/oil function
  • Modern bodywork for a lean and modern image
  • YRRD (Yamaha Rinaldi R and D) tuning kit available


Engine Type: liquid-cooled, 2-stroke, Forward-inclined single cylinder, reed valve with YPVS
Displacement: 125cc
Compression Ratio: 8.6 ~ 10.7 : 1
Bore x Stroke: 54.0 mm x 54.5 mm
Ignition System: CDI
Starter System: Kick
Transmission System: Constant Mesh, 6-speed
Final Transmission: Chain
Lubrication: Premix
Fuel Tank Capacity: 8.0L
Oil Capacity: 0.7L


Front Suspension System: Upside-down telescopic fork
Rear Suspension System: Swingarm, (link suspension)
Front Brake: Hydraulic single disc, Ø250 mm
Rear Brake: Hydraulic single disc, Ø245 mm
Front Tyre: 80/100-21 51M
Rear Tyre: 100/90-19 57M


Length x Width x Height (mm): 2137 mm x 825 mm x 1295 mm
Seat Height (mm): 975 mm
Wheel Base (mm): 1445 mm
Minimum Ground Clearance (mm): 363 mm


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