Yamaha YZ125X (2026) Key Specifications Engine Type Liquid-cooled, 2-stroke, Single cylinder, reed-valve inducted Engine Capacity 125 cc / 7.62 cubic inches Max Power n/a Max Torque n/a Top Speed n/a Fuel Tank Capacity 7 L / 1.84 US gallons Weight (Wet/Kerb) 96 kg / 212 lbs Seat Height 970.2 mm / 38.2 inches
*n/a – information not provided by manufacturer
All Specifications Make & Model Model Yamaha YZ125X Year 2026
Engine Engine Type Liquid-cooled, 2-stroke, Single cylinder, reed-valve inducted Displacement 125 cc / 7.62 cubic inches Bore x Stroke 54 x 54.5 mm Compression Ratio 7.8~10.2:1 Number of Cylinders 1 Max Horsepower n/a Max Torque n/a Engine Management System Hitachi Astemo® Keihin PWK38S carburetor Lubrication System Premix Cooling System Liquid-cooled Ignition System CDI, Kick
Performance *n/a – information not provided by manufacturer
Transmission Clutch Wet multiplate clutch, hydraulic Gearbox Constant-mesh 6-speed Final Drive Chain
Electrical & Electronics System Chassis & Suspension Frame Type Semi double cradle Front Suspension KYB® Speed-Sensitive System inverted fork; fully adjustable Front Suspension Travel 300 mm / 11.8 inches Rear Suspension KYB® single shock; fully adjustable Rear Suspension Travel 315 mm / 12.4 inches Rake 26.4 ° Trail 112 mm / 4.4 inches Rear Subframe Removable Aluminum subframe
Wheels & Brakes Wheels Wire aluminum wheels Front Tire Size 80/100-21 Dunlop® Geomax MX33F Rear Tire Size 110/100-18 Dunlop® Geomax MX33 Front Brakes Hydraulic disc, 270mm Rear Brakes Hydraulic disc, 240mm
Dimension & Weights Overall Length 2154 mm / 84.8 inches Overall Width 825 mm / 32.5 inches Overall Height 1295 mm / 51 inches Seat Height 970.2 mm / 38.2 inches Wheelbase 1455.4 mm / 57.3 inches Ground Clearance 355.6 mm / 14 inches Fuel Tank Capacity 7 L / 1.84 US gallons Wet (kerb/curb) Weight 96 kg / 212 lbs
Features The YZ125’s liquid-cooled 125cc two-stroke engine provides thrilling mid- to high-rpm power, along with supreme usability. A revised compression ratio, revised YPVS timing and model-specific CDI unit create broad, usable power suited to cross country. Intake design allows for a straighter, more efficient draw of air into the intake tract. High-precision Hitachi Astemo® Keihin PWK38S carburetor provides clean, crisp throttle response and superior rideability. An advanced, close-ratio six-speed transmission has wide gear teeth and optimized gear ratios for maximum performance. A compact exhaust expansion chamber improves clearance in tight terrain while providing excellent exhaust efficiency. Large-capacity radiator with dark louvers deliver an aggressive look and maximum cooling efficiency. Best-in-class Speed Sensitive 48mm KYB® fork is tuned for cross country, offering precise damping and 11.8 inches of travel. Race-proven aluminum semi-double cradle frame provides the perfect balance of rigidity and flex for exceptional handling. Removable aluminum rear subframe is constructed of square-section tubing for reduced weight. Fully adjustable KYB® shock provides exceptional rear wheel control, class-leading capability and 12.4 inches of travel. High performance braking system features 270mm front rotor, 240mm rear rotor, large front pistons and rigid calipers. Tapered aluminum handlebar include adjustable mounts for more comfortable ergonomics. Slick blue Excel® rims provide exceptional durability and a premium look. High performance Dunlop® Geomax MX33 tires offer outstanding cornering traction, stability and feel. A flat seat, narrow fuel tank and well-integrated body panels combine to create greater freedom of movement. Enduro features include an 18-inch rear wheel, larger rear sprocket, side stand, sealed O-ring chain and reserve fuel petcock. Premium embedded Yamaha graphics highlight the YZ family pedigree and provide excellent durability. Two-Stroke Power: Tuned for Enduro Racing Lightweight Aluminum Frame High Performance Braking System Industry-Leading Suspension Bold YZ Styling GNCC-Specific Features Powerful 125cc Two-Stroke Engine Tuned for GNCC Competition Efficient Air Intake Design Precise Fueling Close-Ratio Six-Speed Transmission Narrow Exhaust Pipe New High-Capacity Radiator Lightweight Frame Industry-Leading KYB Fork Advanced KYB Shock Premium Excel Wheels & Dunlop Tires Cross Country Ergonomics Cross Country Features Yamaha YZ125X (2026) Color Options Know someone who’d find this useful? Share this page with a friend, your riding club or your favourite motorcycle community.
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