YZ125
RETURN TO YOUR ROOTS
The YZ125 is the perfect transition from a YZ85 to a YZ250F! One ride and you will be amazed at the light handling and the simple fun the YZ125 provides. Plus, YZ 2-strokes are easier and cost less to maintain. A win-win for all the true moto fans out there.
- Features
- Options
- Specs
- Available Models
Key Features
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A light aluminum frame housing an amazingly light and compact engine results in an awesome power-to-weight ratio.
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The YZ125 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs, and gripper seat.
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A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85 cc class.
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Ultra lightweight means nimble handling with less fatigue.
Engine
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Amazingly compact 124 cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio.
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Reed-valve spacer improves acceleration across the entire powerband.
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Patented YPVS® power-valve system combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
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Six-speed, close-ratio transmission optimizes gear ratios for maximum performance.
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Digital CDI ignition system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
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Large-capacity radiator features a 10-row core with four louvers to deliver maximum cooling efficiency at all performance levels.
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Primary kickstarting ensures easy restarts in any gear.
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Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.
Chassis / Suspension
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YZ250F-style front-brake caliper and wave-style front and rear discs minimize unsprung weight and provide excellent stopping power.
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A carefully engineered, advanced aluminum frame and swingarm give the YZ125 the best handling in its class.
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Speed-Sensitive System 48 mm KYB® fork; damping force is controlled by piston speed which provides a smoother, more precise ride with 11.8 inches of travel.
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Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
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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.
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Tapered rear wheel spacers ease sliding the rear wheel into place for quicker tire changes.
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Premium Dunlop® knobbies offer race-spec traction and wear.
Additional Features
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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.
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Wide, cleated, folding titanium foot pegs are lightweight and provide excellent comfort, grip and ground clearance.
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Use of light box-head bolts throughout the chassis eases maintenance while reducing weight for increased performance.
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Premium drive chain has gold-colored plates for outstanding looks.
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Wide-diameter fuel tank cap for easier refueling.
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Re-packable exhaust silencer.
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Durable, comfortable handlebar grips.
General Information
Color
Team Yamaha Blue / White
Dimensions
Ground Clearance
15.2 in.
Engine
Engine
Reed-valve inducted, 2-stroke
Bore x Stroke
54 x 54.5 mm
Compression Ratio
8.6 ~ 10.7:1
Carburetion
Mikuni® TMX 38
Drivetrain
Transmission
Constant-mesh 6-speed
Brakes/Wheels/Tires
Brakes
Front: 250 mm hydraulic single disc
Rear: 245 mm hydraulic single disc
Tires
Front: 80/100-21
Rear: 100/90-19
Operational
Suspension
Front: Speed-Sensitive System inverted fork, fully adjustable; 11.8 in. travel
Rear: Fully adjustable single shock; 12.4 in. travel