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Chassis/Suspension

• Lightweight finely tuned chassis means nimble handling, more control and less rider fatigue.
• Race-proven aluminum semi-double cradle frame is engineered to provide the perfect balance of strength and flex.
• Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
• Best-in-class Speed Sensitive 48mm KYB® fork includes a leaf spring in the mid-speed valve for unmatched performance.
• Fully adjustable KYB® shock provides exceptional rear wheel control and class-leading capability.
• High performance braking system features a 270mm front and 240mm rear rotors offering exceptional braking power and feel.
• Premium Bridgestone® Battlecross X20 tires offer strong cornering grip and race-developed performance.

Engine

• High-capacity radiator with dark louvers deliver maximum cooling efficiency and an aggressive look.
• Close-ratio six-speed transmission has wider gear tooth width and optimized gear ratios for maximum performance.
• Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response.
• High-precision Hitachi Astemo® Keihin PWK38S carburetor provides clean, crisp throttle response and superior rideability.
• Patented Yamaha Power Valve System combines crisp bottom-end torque with potent mid-range and free-revving top-end.
• Yamaha's advanced, liquid-cooled 125cc two-stroke engine provides impressive power and supreme usability.

Key Features

• ICONIC 70TH ANNIVERSARY EDITION STYLING: Celebrate seven decades of motorsports excellence with the 2026 YZ125 70th Anniversary Edition. Iconic white and red speed block livery combines with the YZ125's sleek, aggressive bodywork to commemorate the 1955 birth of Yamaha Motor Company in standout style.
• POWERFUL TWO-STROKE YZ125 ENGINE: Yamaha's advanced, liquid-cooled 125cc two-stroke engine is ready for competition straight out of the box with Yamaha's patented Power Valve System (YPVS) providing impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.
• LIGHTWEIGHT RIDER-FRIENDLY CHASSIS: The lightweight finely tuned chassis means nimble handling, more control and less rider fatigue. A race-proven, highly developed aluminum 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 aluminum rear subframe is constructed of square-section tubing for reduced weight.
• PREMIUM KYB® SUSPENSION: The YZ125 70th Anniversary Edition's renowned suspension performance offers unmatched levels of control, capability and comfort. The class-leading Speed Sensitive System 48mm inverted KYB® fork includes a leaf spring in the mid-speed valve for more precise damping and increased performance. The fully adjustable KYB® rear shock features reduced-friction Kashima Coat internals, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for enhanced comfort. It all adds up to class-defining suspension and handling characteristics.
• RACE-READY FEATURES: Complete with adjustable aluminum handlebars, water-resistant PVC handle bar pad, wide foot pegs, gripper seat, adjustable clutch lever with works-style cable adjuster and lightweight rear sprocket design, the YZ125 70th Anniversary Edition is competition-ready straight out of the crate.

New For 2026

• Revised carburetor setting for more consistent performance in varied conditions.
• Updated CDI settings optimize combustion for more linear power delivery and enhanced rideability.
• Updated air intake and intake boot design yield a more seamless connection and smoother airflow.
• Iconic white and red 70th Anniversary Edition livery combines with the YZ250's aggressive bodywork for a stunning look.

Other Features

• Carefully considered ergonomic design includes a flat seat and slim, integrated body panels for greater freedom of movement.
• Competition-ready features include two-position adjustable handlebar, wide foot pegs, and works-style clutch cable adjuster.