Yamaha YZ250X (2026)

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Key Specifications

Engine TypeLiquid-cooled, 2-stroke, Single cylinder,  reed-valve inducted
Engine Capacity249 cc / 15.2 cubic inches
Max Powern/a
Max Torquen/a
Top Speedn/a
Fuel Tank Capacity6.8 L / 1.8 US gallons
Weight (Wet/Kerb)104 kg / 229 lbs
Seat Height975.36 mm / 38.4 inches
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All Specifications

Make & Model

ModelYamaha YZ250X
Year2026

Engine

Engine TypeLiquid-cooled, 2-stroke, Single cylinder,  reed-valve inducted
Displacement249 cc / 15.2 cubic inches
Bore x Stroke66.4 x 72 mm
Compression Ratio7.9~9.4:1
Number of Cylinders1
Max Horsepowern/a
Max Torquen/a
Engine Management SystemHitachi Astemo® Keihin PWK38S carburetor
Lubrication SystemPremix
Cooling SystemLiquid-cooled
Ignition SystemCDI, Kick

Performance

Top Speedn/a

Transmission

ClutchWet multiplate clutch, hydraulic
GearboxConstant-mesh 5-speed
Final DriveChain

Electrical & Electronics System

Headlight Typen/a

Chassis & Suspension

Frame TypeAluminum frame
Front SuspensionKYB® Speed-Sensitive System inverted fork; fully adjustable
Front Suspension Travel300 mm / 11.8 inches
Rear SuspensionKYB® single shock; fully adjustable
Rear Suspension Travel315 mm / 12.4 inches
Rake27.7 °
Trail122 mm / 4.8 inches
Rear SubframeRemovable Aluminum subframe

Wheels & Brakes

WheelsWire aluminum wheels
Front Tire Size80/100-21 Dunlop® Geomax MX33F
Rear Tire Size110/100-18 Dunlop® Geomax MX33
Front BrakesHydraulic disc, 270mm
Rear BrakesHydraulic disc, 240mm

Dimension & Weights

Overall Length2185 mm / 86 inches
Overall Width825 mm / 32.5 inches
Overall Height1290 mm / 50.8 inches
Seat Height975 mm / 38.4 inches
Wheelbase1485 mm / 58.5 inches
Ground Clearance360 mm / 14.2 inches
Fuel Tank Capacity6.8 L / 1.8 US gallons
Wet (kerb/curb) Weight104 kg / 229 lbs

Features

  • A 249cc reed-valve-inducted two-stroke engine is lightweight, compact and fun with a wide, hard-hitting powerband.
  • The YZ250X is tuned for enduro with a revised compression ratio, revised YPVS timing and model-specific digital CDI unit.
  • High-precision Hitachi Astemo® Keihin PWK38S carburetor provides clean, crisp throttle response and superior rideability.
  • Intake design allows for a straighter, more efficient draw of air into the intake tract.
  • A compact exhaust expansion chamber improves clearance in tight terrain while providing excellent exhaust efficiency.
  • Smooth-shifting wide-ratio transmission ensures proper gearing from tight woods to wide-open fire roads.
  • Durable clutch design includes six inner pressure plates with advanced friction material for exceptional heat resistance.
  • Large-capacity radiator provides maximum cooling efficiency for demanding racing conditions.
  • Best-in-class Speed Sensitive 48mm KYB® fork is tuned for cross country, offering precise damping and 11.8 inches of travel.
  • Ultra-lightweight YZ250-spec aluminum frame is precisely engineered for the perfect balance of rigidity and flex.
  • 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, wide-ratio gearing, 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
  • Advanced Motocross-Derived Chassis
  • High Performance Brake System
  • Exceptional Ergonomics
  • Bold YZ Styling
  • GNCC-Specific Features
  • Exhilarating Two-Stroke Power
  • Tuned for GNCC Competition
  • Efficient Air Intake Design
  • Advanced Carburetor
  • Narrow Exhaust Pipe
  • Wide-Ratio Five-Speed Transmission
  • Durable Clutch Design
  • New High-Capacity Radiator
  • YZ250-Based Frame
  • Industry-Leading KYB Fork
  • Advanced KYB Shock
  • Premium Excel Wheels & Dunlop Tires
  • Cross Country Ergonomics

Yamaha YZ250X (2026) Color Options

  • Team Yamaha Blue (US)
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