Chassis / Suspension

• COMPACT BODY & SEAT DESIGN: Adopting the aggressive body design of the flagship YZ450F, 2024 YZ250F is slimmer and flatter, easing rider movement for improved control. A more narrow fuel tank, lower airbox and more narrow radiator shrouds provide a compact rider cockpit. The rider triangle is also improved with increased legroom between the seat and footpegs for greater comfort.
• ENHANCED MASS-CENTRALIZATION: The compact engine, wraparound exhaust and fuel tank are strategically positioned to enhance mass centralization for a lightweight handling feeling on the track. The wide 55mm footpegs provide added control and comfort.
• STRONG, LIGHTWEIGHT WHEELS: Careful computer-aided refinement of each wheel’s cross-sectional profile shaves valuable weight without sacrificing durability. Unique three-cross-spoke pattern on the rear wheel improves impact absorption and overall feel.

Engine

• ADJUSTABLE ENGINE MAPS: Handlebar-mounted switch allows on-the-fly selection between two preloaded engine maps with the push of a button, making it easy to make immediate adjustments to changing track or weather conditions. Maps are loaded and configured within the Power Tuner App.
• ADVANCED 250CC FOUR-STROKE ENGINE: The YZ250F's liquid-cooled, DOHC 4-valve, fuel-injected powerplant features a forward-positioned straight downdraft intake with symmetrical intake ports, high-spec piston and aggressive cam profiles. The advanced four-stroke engine is known for its broad, useable powerband and class-leading low-end and mid-range torque. For 2024, a more efficient intake path and revised ECU settings results in even more mid- to high-end power.
• ADVANCED FUEL INJECTION: The adjustable fuel injection system uses a 44mm throttle body, fed by a high-pressure electric fuel pump, to inject fuel through a 12-hole Denso® injector. This ensures optimum fuel atomization and air/fuel calibration for excellent rideability in a wide range of riding conditions.
• DURABLE CLUTCH: The YZ250F features a large-diameter 15 plate clutch to withstand the high demands of motocross racing.
• INNOVATIVE YAMAHA POWER TUNER APP: The free-of-charge Yamaha Power Tuner App brings the power of the GYTR® Power Tuner to your iOS® or Android® device. Using wireless connectivity to talk to the bike’s onboard electronics system, the app allows owners to adjust air/fuel mixture and ignition timing to tune engine character for track conditions, log track set-up information, and monitor a range of data such as maintenance and system diagnosis, engine run time and more. For the 2024 YZ250F, the app has been revised to be more user-friendly. Features include an intuitive “Simple Tuning” slide bar for engine mapping, Traction and Launch Control tuning, lap timer, along with helpful engine and suspension tuning guides.
• AIR INTAKE: Optimized intake path draws air from under the side covers and seat more efficiently, resulting in a boost in mid- to high-rpm performance and improved over-rev characteristics. The redesign also allows radiator shrouds to be slimmer and the airbox cover to be lower and more narrow.
• PISTON, ROD & CRANKSHAFT BALANCE: A forged piston features a bridge-box design for maximized strength with minimal weight. The piston, rings and DLC-coated piston pin, along with the offset cylinder configuration, all reduce friction loss. Intake ports, cam profiles, high-strength connecting rod, optimized crank and counter-balancer all work together to produce potent high-rpm power with user-friendly delivery and exceptional reliability. For 2024, a redesigned cam chain improves durability.
• WRAPAROUND REAR-POSITIONED EXHAUST LAYOUT: An innovative exhaust pipe design improves mass centralization and power characteristics. This layout moves the rear end of the exhaust pipe farther forward and positions the muffler closer to the bike’s center of mass.

New For 2024

• ALUMINUM BILATERAL BEAM FRAME: A completely redesigned aluminum bilateral beam frame based on the flagship YZ450F 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 lightweight feel and increased front wheel traction, allowing the rider to enter corners with greater confidence and more line choices.
• ICONIC HERITAGE YZ STYLING: Class-leading four-stroke performance wrapped in iconic heritage YZ style, the YZ250F 50th Anniversary Edition draws its inspiration from 1990s-era Yamaha two-stroke motocrossers to honor 50 years of Yamaha off-road innovation.
• AIR INTAKE: Optimized intake path draws air from under the side covers and seat allowing for a lighter, slimmer and more compact body. This redesign allows radiator shrouds to be slimmer and the airbox cover to be lower and more narrow. The more efficient intake path also boosts mid- to high-rpm engine performance.
• TRACTION CONTROL & LAUNCH CONTROL: The Traction Control System communicates wheel slip to the ECU, tuning the engine to maintain ideal rear wheel traction. Three levels can be selected: HIGH, LOW or OFF. The updated Launch Control System now features an rpm limiter which can be adjusted in 500 rpm increments between 6,000 rpm and 14,000 rpm for optimized launches when the gate drops. Both systems are controlled through the Yamaha Power Tuner App.
• YAMAHA POWER TUNER APP: Like having factory team support in your pocket, Yamaha's groundbreaking Power Tuner App is revised to be even more user-friendly. Features include an intuitive “Simple Tuning” slide bar for engine mapping, Traction and Launch Control tuning, lap timer, along with helpful engine and suspension tuning guides.
• REVISED SUSPENSION SETTINGS: Class leading, fully adjustable KYB® coil spring-type fork with speed-sensitive damping delivers exceptional balance between handling and bump absorption for championship-winning performance. For 2024, the fork now includes 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 for improved stability.
• SLIMMER BODY & IMPROVED ERGOS: The 2024 YZ250F has a slimmer, flatter body design for improved control, including a more narrow fuel tank, lower airbox and more narrow radiator shrouds. The rider triangle is also improved with increased legroom between the seat and footpegs for greater rider comfort.

Other Features

• SHARP, DURABLE 50TH ANNIVERSARY GRAPHICS: Iconic 1990s-era livery highlights the Yamaha YZ's unmatched heritage and racing pedigree. Premium 50th Anniversary graphics are embedded to provide excellent durability and scratch resistance.
• SIMPLIFIED SERVICING: Sleek air cleaner cover provides tool-free access to the air filter, positioned at the front of the bike to avoid roost from the rear wheel.
• TOP-SPEC DETAILS: The YZ250F boasts top-spec details including 1-1/8-inch aluminum tapered handlebars secured to four-position adjustable handlebar mounts, wide 55mm footpegs and a quick-adjust clutch perch.

Top Features

• ADVANCED 250CC FOUR-STROKE ENGINE: Featuring a high-spec piston, aggressive cam profiles and forward positioned intake cylinder head layout, the YZ250F's advanced four-stroke engine is known for its broad, useable powerband and class-leading low-end and mid-range torque. For 2024, a more efficient intake path and revised ECU settings results in even more mid- to high-end power.
• ALUMINUM BILATERAL BEAM FRAME: A completely redesigned aluminum bilateral beam frame based on the flagship YZ450F provides just the right amount of strength and flex for the perfect balance of straight-line 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. For 2024, the fork now includes 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.
• HIGH PERFORMANCE BRAKING SYSTEM: A large 270mm front brake disc and 240mm rear are coupled with a Nissin calipers to provide exceptional stopping power and control.
• 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. Now even more user-friendly, Features include an intuitive “Simple Tuning” slide bar for engine mapping, Traction and Launch Control tuning, lap timer, along with helpful engine and suspension tuning guides. Best of all, it's free-of-charge.