[webbikeworld.com] - 2021 Yamaha YZ125 [Model Overview]

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  1. Newsbot

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    The 2021 Yamaha YZ125: MotoCross Perfection For The Junior Classes​


    The 2021 YZ125 is the first step into serious competition from Yamaha. Powered by a 125cc 2-stroke, liquid-cooled single cylinder, the bike is designed by the Japanese manufacturer for everything from weekend motocross to national and world class competition.

    Like other off-road bikes in the 2021 model lineup, the no-compromises mentality of the YZ125 shows through with a full suite of competition parts already fitted from the factory. KYB fully adjustable front and rear shocks, with 48mm inverted forks up front travelling 11.8 inches and the adjustable link monocross at the rear giving 12.4 inches of travel.

    Braking is through a 270mm floating disc up front, clamped by a 2-piston competition caliper, and a 245mm disc out back with a single-piston competition caliper. The front wheel is 21 inches in diameter, with the rear at 19 inches. Ground clearance is at 14.4 inches (365 mm).

    As well, in Europe and Canada, there is a version called the YZ125X, with the only difference being a higher compression ratio and the addition of Yamaha’s Power Valve System (YPVS) to make the bike suitable for cross-country and hill-scramble competition.

    The 2021 Yamaha YZ125 starts at $6,699 USD / $7,599 CAD, with the YZ125X at $7,799 CAD.

    On this page: we’ve curated specs, features, news, photos/videos, etc. so you can read up on the new 2021 Yamaha YZ125 in one place.


    Model Overview​

    General Info​

    • Price: $6,699 USD / $7,599 CAD
    • Key Features:
      • Competition spec suspension and brakes
      • Designed to be 100% compliant with all 125cc motocross regulations
      • Full aluminum double-cradle frame with detachable rear subframe for repairs and replacement between heats.

    Main Specs

    • Engine Type: 125cc single 2-stroke, liquid cooled
    • Horsepower: Not provided by manufacturer
    • Torque: Not provided by manufacturer
    • Wet Weight: 161 lbs (73 kg)
    • Seat Height: 33.1 inches (840 mm)


    • Honda CRF125R
    • KTM 125 SX 2-stroke
    • Husqvarna TC 125


    2021 Yamaha YZ125 Specifications​

    Engine 125cc single 2-stroke, liquid cooled
    Power Not provided by manufacturer
    Bore x Stroke
    54.0mm x 54.5mm
    Compression Ratio
    Fuel System
    Mikuni® TMX 38
    Starter Electric
    Clutch Multiplate wet clutch
    Constant-mesh 6-speed
    Final Drive Chain
    Suspension Front
    KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travell
    Suspension Rear
    KYB® single shock; fully adjustable, 12.4-in travel
    Brakes Front Hydraulic disc, 270mm
    Brakes Rear
    Hydraulic disc, 245mm
    Tires Front
    80/100-21 Dunlop® MX52
    Tires Rear
    100/90-19 Dunlop® MX52
    Fuel Tank Capacity
    2.1 gal
    Color Team Yamaha Blue
    Spark Plugs
    Headlight LED
    Tail Light LED
    Overall Length
    84.1 in
    Overall Width 32.6 in
    Overall Height 51.0 in
    56.8 in
    Ground Clearance
    14.4 in
    Seat Height
    38.4 in
    Wet Weight
    207 lb
    Warranty 1 Year (Limited Factory Warranty)


    2021 Yamaha YZ125 Features​

    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[​IMG]-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[​IMG] 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[​IMG] 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 YZ250 is ready to race out of the crate.

    2021 Yamaha YZ125 Photos​

    2021 Yamaha YZ125 Videos​


    Yamaha Motorcycles Official Websites

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