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Chassis / Suspension

• A linkage-type rear suspension with KYB® shock is tuned to provide less pitch and improved stability.
• Premium Dunlop® Geomax MX33 tires maximize traction while delivering excellent durability.
• Strong, lightweight wheels reduce unsprung weight without sacrificing durability.
• Wide 55mm foot pegs provide additional control and comfort.
• Tapered aluminum handlebars are secured to four-position adjustable handlebar mounts.
• The rider triangle is improved with increased legroom between the seat and foot pegs for greater rider comfort.
• The YZ250FX's aggressive body design is slim, flat and eases rider movement for improved control.
• Large 270mm front and 240mm rear discs combine with Nissin calipers to provide exceptional stopping power and control.
• KYB® fork includes a hand-adjustable knob for easy compression adjustments.
• Fully adjustable Speed Sensitive KYB® fork delivers exceptional balance between handling and bump absorption.
• A redesigned aluminum bilateral beam frame is tuned to provide the perfect balance of stability and cornering performance.

Engine

• A forged piston features a bridge-box design for maximized strength with minimal weight.
• A compact, centrally-mounted electric starter system simplifies starting and minimizes restart delays for added convenience.
• The YZ250FX features a large-diameter 15-plate clutch to withstand the extreme demands of cross country racing.
• A six-speed transmission ensures the right gear is available for the wide variety of terrain found in cross country racing.
• Handlebar-mounted switchbox allows on-the-fly selection between two preloaded engine maps with the push of a button.
• For 2026, an industry-first ECU lock function helps prevent theft and unauthorized engine start-up.
• An updated Launch Control System controlled through the Power Tuner App optimizes launches when the gate drops.
• Four-level Traction Control selectable within the Yamaha Power Tuner App maintains ideal rear wheel traction.
• A “Simple Tuning” slide bar simplifies engine mapping within the Power Tuner App.
• An innovative exhaust pipe design improves mass centralization and power characteristics.
• A more efficient intake path and revised ECU settings result in better top-end performance and improved over-rev character.
• The adjustable fuel injection system uses a 44mm throttle body to ensure optimum fuel atomization and air / fuel calibration.
• A redesigned cam chain improves durability.
• Intake ports, cam profiles, high-strength connecting rod and optimized crank combine to produce potent high-rpm power.
• The piston, rings and DLC-coated piston pin, along with the offset cylinder configuration, all reduce friction loss.
• The YZ250FX's 250cc four-stroke engine is renowned for broad, useable power and class-leading low-end and mid-range torque.
• Yamaha's industry-leading Power Tuner App allows owners to tune air/fuel mixture and ignition timing to suit their preference.

Key Features

• ADVANCED 250CC FOUR-STROKE ENGINE: The compact, powerful YZ250FX engine includes all the same race-developed technologies of the championship-winning YZ250F, tuned for cross country performance. Featuring a high-spec piston, aggressive cam profiles and forward positioned intake cylinder head layout, the YZ250FX's advanced four-stroke engine is known for its broad, useable powerband and class-leading low-end and mid-range torque.
• INNOVATIVE YAMAHA POWER TUNER APP: Yamaha's industry-leading Power Tuner App puts the flexibility and precision tunability of the GYTR® Power Tuner into your smartphone. Make fueling and ignition timing changes on the app, then instantly upload them to your bike for ultimate track-side tuning. Features include an intuitive “Simple Tuning” slide bar for engine mapping, four-level Traction Control and Launch Control tuning, a lap timer, along with helpful engine and suspension tuning guides. Best of all, it's free-of-charge.
• ADVANCED ALUMINUM BILATERAL BEAM FRAME: The advanced aluminum bilateral beam frame based on the class-dominating YZ250F motocross model provides just the right amount of strength and flex for the perfect balance of stability and cornering performance. The result is a better handling machine with lighter feel, more agility and increased traction, allowing the rider to charge corners with greater confidence.
• CLASS-LEADING SUSPENSION: Fully adjustable KYB® coil spring-type fork with speed-sensitive damping delivers exceptional balance between handling and bump absorption for championship-winning performance. The fork includes a hand-adjustable knob for toolless compression adjustment. Linkage-type rear suspension features a KYB® shock with revised settings to provide less pitch on corner entry/exit and improved stability.
• CROSS COUNTRY FEATURES: With the electric starting system, a 2.1-gallon fuel tank, wide-ratio six-speed transmission, rugged plastic skid plate, 18-inch rear wheel, sealed drive chain and high performance Dunlop® Geomax MX33 tires, the YZ250FX is ready to win right out of the box.

Other Features

• Sleek air cleaner cover provides tool-free access to the air filter for simplified servicing.
• Premium competition-inspired graphics are embedded to provide excellent durability and scratch resistance.
• Built for enduro with a 2.1-gallon fuel tank, rugged plastic skid plate, 18-inch rear wheel and sealed drive chain.