A light aluminum frame housing an amazingly light and compact engine results in an awesome power-to-weight ratio.
The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs, and gripper seat.
A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class.
Ultra lightweight means nimble handling with less fatigue.
Engine:
Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio.
Reed-valve spacer improves acceleration across the entire powerband.
Patented YPVS® power-valve system combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
Six-speed, close-ratio transmission optimizes gear ratios for maximum performance.
Digital CDI ignition system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
Large-capacity radiator features a 10-row core with four louvers to deliver maximum cooling efficiency at all performance levels.
Primary kickstarting ensures easy restarts in any gear.
Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.
Chassis/Suspension:
YZ250F-style front-brake caliper and wave-style front and rear discs minimize unsprung weight and provide excellent stopping power.
A carefully engineered, advanced aluminum frame and swingarm give the YZ125 the best handling in its class.
Speed-Sensitive System 48mm KYB® fork; damping force is controlled by piston speed which provides a smoother, more precise ride with 11.8 inches of travel.
Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Rear, fully adjustable KYB® shock features a super-light titanium shock spring and reduced-friction Kashima coating of 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 to fantastic rear wheel control and a sweet ride.
Tapered rear wheel spacers ease sliding the rear wheel into place for quicker tire changes.
Premium Dunlop® knobbies offer race-spec traction and wear.
Additional Features:
Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low aluminum handlebar all help create greater freedom of movement and more comfortable ergonomics for riders.
Wide, cleated, folding titanium foot pegs are lightweight and provide excellent comfort, grip and ground clearance.
Use of light box-head bolts throughout the chassis eases maintenance while reducing weight for increased performance.
Premium drive chain has gold-colored plates for outstanding looks.
Wide-diameter fuel tank cap for easier refueling.
Repackable exhaust silencer.
Durable, comfortable handlebar grips.
Source: yamahamotorsports
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