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
Top Speed
n/a
*n/a – information not provided by manufacturer
Transmission
Clutch
Wet multiplate clutch, hydraulic
Gearbox
Constant-mesh 6-speed
Final Drive
Chain
Electrical & Electronics System
Headlight Type
n/a
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
Team Yamaha Blue (US)
*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
