Modern Styling The front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs offer modern, aggressive styling —just like the 4-strokes.
Lightweight Frame A light aluminum frame houses a patented YPVS™-equipped ripper of an engine for an awesome power-to-weight ratio.
Race-Ready Features Complete with an aluminum handlebar, titanium foot pegs and gripper seat, the YZ125 is ready to race out of the crate.
Ideal Balance A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class.
Rider-Friendly Chassis Ultra light weight means nimble handling and less fatigue.
270mm Front Brake The large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
Two-Stroke Power Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio.
Race-Developed Intake Reed-valve spacer improves acceleration across the entire powerband.
Yamaha Power Valve System Patented YPVS™ combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
Close-Ratio Transmission Six-speed, close-ratio transmission optimizes gear ratios for maximum performance.
Digital Ignition Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
High-Capacity Radiator Large-capacity radiator features a 10-row core with four louvers to deliver maximum cooling efficiency at all performance levels.
270mm Front Brake Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
Aluminum Frame A carefully engineered, advanced aluminum frame and swingarm give the YZ125 the best handling in its class.
Lightweight Subframe Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Industry-Leading Fork The Speed-Sensitive System 48mm KYB® fork and the damping force are controlled by the piston speed for a smoother, more precise ride with 11.8 inches of travel.
Advanced KYB® Shock Rear, fully adjustable KYB® shock features reduced-friction Kashima Coat™ internals, 12.4 inches of travel, separate adjusters for high- and low-speed compression damping and a full lock oil rebound system for increased comfort. All add up for fantastic rear wheel control and a sweet ride.
Race-Ready Tires Premium Dunlop® knobbies offer race-spec traction and wear.
Race-Ready Features Complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster, the YZ125 is ready to race out of the crate.
125cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke
54.0mm x 54.5mm
Mikuni® TMX 38
Constant-mesh 6-speed; multiplate wet clutch
Suspension / Front
KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Suspension / Rear
KYB® single shock; fully adjustable, 12.4-in travel