Celebrate seven decades of motorsports excellence with this striking 70th Anniversary Edition. Designed to commemorate the 1955 birth of Yamaha Motor Company, iconic white and red Yamaha speed block livery combines with the YZ125’s sleek, aggressive bodywork for standout style.
Mix in the hard-hitting power of its 125cc YPVS-equipped two-stroke engine and intuitive control from its lightweight chassis and class-leading KYB® suspension, and the YZ125 70th Anniversary Edition is a bike designed to compete straight out of the box.
Features
Keihin Powerjet carburettor
High-precision Hitachi Astemo® Keihin PWK38S carburetor features a power jet, throttle position sensor and 3D-map-controlled CDI unit for precise ignition timing. The result is clean, crisp throttle response, superior rideability and excellent over-rev character.
Close-ratio transmission
Close-ratio six-speed transmission has wider transmission gear tooth width and optimised gear ratios for maximum performance.
Best-in-class KYB suspension
Yamaha’s SSS (Speed Sensitive System) KYB front forks are widely regarded as being amongst the best designs available on a production motocross bike, and the YZ125 features low speed damping settings on both the front and rear suspension systems for better handling characteristics. Tool-free compression adjustment now features on top of each fork leg.
Lightweight frame
Race-proven, highly developed aluminium semi-double cradle frame is engineered to provide just the right amount of strength and flex for the perfect balance of stability and cornering performance. Removable aluminium rear subframe is constructed of square-section tubing for reduced weight.
Powerful braking system
The high performance braking system features a 270mm front rotor, 240mm rear rotor, large front pistons and rigid calipers, all combining to provide exceptional braking power and feel.
Race-developed ergonomics
Complete with an aluminium handlebar, two-position adjustable handlebar clamp, lightweight bar pad, wide footpegs, gripper seat, adjustable clutch lever with works-style cable adjuster and lightweight rear sprocket design, the YZ125 is competition-ready straight out of the crate.
Powerful Two-Stroke YZ125 Engine
Yamaha's advanced, liquid-cooled 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
Technical Specification
Colours
Engine
Chassis
Dimensions
| Engine Type | Liquid-cooled, 2-stroke, reed-valve |
| Displacement (cc) | 125.0 |
| Bore x Stroke (mm) | 54.0 x 54.5 |
| Compression Ratio | 8.2 - 10.1 : 1 |
| Lubrication System | Premix |
| Fuel Management | PWK38S |
| Ignition | CDI |
| Starter System | Kick |
| Fuel Tank Capacity (L) | 7 |
| 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, 240mm |
| Tyres Front | 80/100-21 51M Tube type |
| Tyres Rear | 100/90-19 57M Tube type |
| Length (mm) | 2135 |
| Width (mm) | 825 |
| Height (mm) | 1295 |
| Seat Height (mm) | 980 |
| Wheelbase (mm) | 1445 |
| Ground Clearance (mm) | 365 |
| Wet Weight (kg) | 96 |
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