2009 YZ125 motorcycle

Key Features:

    * A light, aluminum frame housing an amazingly light and compact engine results in an awesome power-to-weight ratio.
    * Ready to race out of the crate, complete with a ProTaper aluminum handlebar, titanium footpegs and gripper seat.
    * A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class.

 New for 2009:

    * Dunlop? D742FA front tire has an innovative knob pattern for excellent grip and handling.
    * New seat cover has great grip and more durability, and it's easy to clean.
    * Premium drive chain has gold colored plates for outstanding looks.
    * Front brake hose clamp is now aluminum, greatly reducing its weight.

 Engine:

    * Reed-valve spacer improves acceleration across the entire powerband.
    * Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio.
    * Patented YPVS? power-valve system combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top end.
    * 38mm Mikuni TMX carburetor gives excellent throttle response and serious horsepower.
    * 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.
    * 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 type 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 the class.
    * Speed-Sensitive System 48mm KYB? fork damping force is controlled by piston speed: provides a smoother, more precise ride.
    * Removable aluminum rear subframe 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 ProTaper handlebar all help create greater freedom of movement and more comfortable ergonomics for riders.
    * Wide, cleated, folding titanium footpegs 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.
    * Wide-diameter fuel tank cap for easier refueling.
    * Repackable exhaust silencer.
    * Durable, comfortable handlebar grips.

Engine
Type    124cc, liquid-cooled, 2-stroke, reed-valve inducted
Bore x Stroke    54.0 x 54.5mm
Compression Ratio    8.6~10.7:1
Carburetion    Mikuni? TMX 38
Ignition    CDI
Transmission    Constant-mesh 6-speed; multiplate wet clutch
Final Drive    Chain Drive
Chassis
Suspension/Front    Speed-sensitive system inverted fork; fully adjustable, 11.8-in travel
Suspension/Rear    Fully adjustable single shock; 12.4-in travel
Brakes/Front    Hydraulic single disc brake, 250mm
Brakes/Rear    Hydraulic single disc brake, 245mm
Tires/Front    80/100-21-51M
Tires/Rear    100/90-19-57M
Dimensions
Length    84.1 in
Width    32.6 in
Height    51.8 in
Seat Height    39.3 in
Wheelbase    56.8 in
Ground Clearance    15.2 in
Wet Weight    208 lb
Fuel Capacity    2.1 gal

Reed-valve spacer improves acceleration across the entire powerband