2011 Yamaha YZ125 (discontinued)

2011 Yamaha YZ125  11MS_YZ125_blu_S1_c1814dd9
C70_11ms_yz125_blu_s1_c1814dd9 C70_11ms_yz125_blu_s2_f26e126a
Vital MX Retail Partners:
Chaparral Motorsports MotoSport Rocky Mountain ATV/MC Motorcycle Superstore

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    Vital MX Retail Partners:
    Chaparral Motorsports MotoSport Rocky Mountain ATV/MC Motorcycle Superstore


    Model Year 2011
    Engine Type Liquid-cooled 2-stroke; reed-valve inducted
    Engine Displacement 124cc
    Bore x Stroke 54.0 x 54.5mm
    Compression Ratio 8.6~10.7:1
    Fuel System Mikuni® TMX 38
    Ignition CDI
    Transmission Constant-mesh 6-speed; multiplate wet clutch
    Final Drive
    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
    Overall Length 84.1 in
    Overall Width 32.6 in
    Overall Height 51.8 in
    Seat Height 39.3 in
    Wheelbase 56.8 in
    Ground Clearance 15.2 in
    Fuel Capacity 2.1 gal
    Curb Weight 208 lb


    • 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.
    • 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.


    • 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.
    • 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 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.
    • 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.

    Price N/A
    Vital MX Retail Partners:
    Chaparral Motorsports MotoSport Rocky Mountain ATV/MC Motorcycle Superstore