2026 Yamaha YZ 250FX

Purpose Built Off-Road Weapon

With its advanced chassis and rider-focused ergonomics, the YZ250FX is lighter, sharper and more agile than ever. The perfect weapon for carving up cross country courses.

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.

Key Features

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.

New 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.

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.

Specifications

Engine

Engine Type - 250cc liquid-cooled DOHC 4-stroke; 4 titanium valves

Bore x Stroke - 77.0mm x 53.6mm

Compression Ratio - 13.8:1

Fuel Delivery - Mikuni® fuel injection, 44mm

Transmission - 6-speed; multiplate wet clutch

Final Drive - Chain

Fuel Capacity - 2.1 gal

Chassis

Suspension/Front - KYB® spring-type fork with speed sensitive damping; fully adjustable, 11.8-in travel

Suspension/Rear - KYB® single shock; fully adjustable, 12.0 in travel

Brakes/Front - Hydraulic disc, 270mm

Brakes/Rear - Hydraulic disc, 240mm

Tires/Front - 80/100-21 Dunlop® Geomax MX33F

Tires/Rear - 110/100-18 Dunlop® Geomax MX33

Dimensions

LxWxH - 85.4 in x 32.5 in x 49.8 in

Seat Height - 37.6 in

Wheelbase - 57.9 in

Rake (Caster Angle) - 27°

Trail - 4.8 in

Max. Ground Clearance - 13.0 in

Fuel Capacity - 2.1 gal

Wet Weight - 243 lb

Other

Warranty - 30 Day (Limited Factory Warranty)