The YZ125X racer is the perfect entry point to the world of enduro. A lightweight two-stroke that will kickstart your off-road journey and set you on a path to racing success.
Its 125cc, liquid-cooled, two-stroke, reed-valve-inducted engine sports Yamaha’s Power Valve System (YPVS), combined with a six-speed transmission tuned for smooth and controllable power character across the entire rev range.
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YZ125X
Features
2 stroke power tuned for off road
Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilises a revised compression ratio, Yamaha Power Valve System (YPVS) timing, and a model-specific CDI unit—all focused on creating broad power delivery that suits off-road terrain and a wide range of rider skill levels.
YZ based frame
Ultra-lightweight YZ125-spec frame features carefully engineered combination of aluminium castings, forgings and extrusions for the perfect balance of rigidity and flex, with industry-leading fully adjustable, KYB speed sensitive spring-type suspension tested and tuned specifically for the needs of enduro racers.
Cross-country features
The YZ125X comes equipped with off-road focused tyres with an 18” rear wheel, larger rear sprocket, a side stand, sealed O-ring chain and a reserve fuel petcock.
Enduro ergonomics
A racy ‘gripper’ type seat and narrow fuel tank combine with a tapered aluminium handlebar and adjustable mounts to create greater freedom of movement and more comfortable ergonomics for riders.
Enduro-specific wheels and tyres
Cross-country-spec Dunlop Geomax AT81 tyres front and rear are ready to head straight to the races. An 18-inch rear tyre has a taller sidewall to improve comfort and reduce pinch flats.
Industry-leading KYB fork
Industry-leading, fully adjustable KYB spring-type fork with speed sensitive damping uses piston speed to control damping force for super-precise handling and a smooth ride, with minimal wasted stroke or abrupt shocks for the rider – all tuned for the demands of off road racing.
Technical Specification
- Engine Type Liquid-cooled, 2-stroke, reed-valve
- Displacement (cc) 125.0
- Bore x Stroke (mm) 54.0 x 54.5
- Compression Ratio 7.4 - 8.8 : 1
- Lubrication System Premix
- Fuel Management Carburettor
- Ignition CDI
- Starter System Kick
- Fuel Tank Capacity (L) 8.0
- Final Transmission Chain
- Transmission Constant mesh 6-speed
- Frame Type 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, 245mm
- Tyres Front 90/90-21 Dunlop AT81F
- Tyres Rear 110/90-18 Dunlop AT81
- Length (mm) 2140
- Width (mm) 825
- Height (mm) 1285
- Seat Height (mm) 955
- Wheelbase (mm) 1455
- Ground Clearance (mm) 365
- Wet Weight (kg) 95