2027 Yamaha YZ450FX

Chassis / Suspension

• CLASS-LEADING SUSPENSION: The YZ450FX adopts the same components from the YZ450F’s class-leading suspension, optimized for comfort at low-to-midrange speeds.
• CROSS-COUNTRY SUSPENSION TUNING: Both front and rear suspension have been specifically tuned to enhance responsiveness from initial damping to the mid-stroke.
• DUNLOP® GEOMAX AT82 TIRES: Dunlop® Geomax AT82 tires are designed specifically for cross-country traction with a bi-directional tread pattern for varying terrain.
• DURABLE EXCEL® PREMIUM WHEELS: Premium Excel® wheels are strong, lightweight and reduce unsprung weight without sacrificing durability.
• IMPROVED REAR BRAKE PEDAL: A rear brake pedal uses a revised lever ratio, while the pedal tip itself can now be replaced for easier maintenance.
• PRECISION ALUMINUM BEAM FRAME: An advanced aluminum bilateral beam frame, strikes the perfect balance of precise cornering performance and handling stability.
• REVISED CROSS-COUNTRY ENGINE BRACKETS: Engine brackets with a revised shape and thickness provide optimal chassis rigidity at low-to-midrange speeds of cross country riding.
• REVISED LIGHTWEIGHT REAR BRAKE: A rear brake with a revised caliper, piston, brake disc and brake hose results in lighter overall weight and improved control.
• SPEED SENSITIVE KYB® FORK: Fully adjustable Speed Sensitive KYB® fork delivers exceptional balance between handling and bump absorption.
• T51 REAR SPROCKET: A rear-wheel sprocket has been changed from T50 to T51, improving low-speed control with reduced likelihood of stalls.
• THREE-CROSS-SPOKE 18-INCH REAR WHEEL: The YZ450FX’s 18-inch rear wheel comes laced with a three-cross-spoke pattern for improved impact absorption and rider feel.

Engine

• COMPACT ELECTRIC STARTER: The YZ450FX features a compact electric starter system to minimize restart delays and add convenience.
• HANDLEBAR-MOUNTED MAP SWITCHGEAR: Lightweight handlebar-mounted switchgear allows the rider to quickly select between preloaded engine maps.
• LOW-FATIGUE THROTTLE CONTROL: Throttle control has been revised to require less rider effort, reducing fatigue over longer, more demanding cross-country rides.
• NOISE-COMPLIANT TAILPIPE DESIGN: Noise regulation compliance achieved through tailpipe revisions including a tailpipe cap and updated pipe perforations.
• NOISE-REDUCING AIR FILTER ASSEMBLY: A air filter assembly, with the same outer resonator as the YZ450F, reduces overall noise for more comfortable riding.
• POWER TUNER APP CONNECTIVITY: Yamaha’s industry-leading Power Tuner App offers the ability to tune air/fuel mixture and ignition timing to suit rider preference.
• REDUCED-LOAD CLUTCH SPRINGS: Modifications to the clutch springs have reduced lever load for flatter characteristics, improving engine control at lower speeds.
• REVISED AC MAGNETO ROTOR: A revised AC magneto rotor increases inertial mass, reducing torque fluctuations for more low-end grunt and easier-to-use character.
• REVISED CROSS-COUNTRY ENGINE: A advanced four-stroke engine has been revised for the varying speed and terrain of cross-country racing.
• SMOOTH-OPERATING HYDRAULIC CLUTCH: The YZ450FX adopts the YZ450F’s hydraulic clutch, with a 15% reduced lever pull for reduced fatigue over longer rides.
• SMOOTH-POWER CAM TIMING: Revised intake and exhaust cam timing angles deliver smoother power for cross country racing and reduces engine stalls at lower rpms.

Key Features

• HIGH PERFORMANCE 450CC FOUR-STROKE ENGINE: The YZ450FX’s thrilling liquid-cooled DOHC four-stroke engine is designed to provide broad power character and ease-of-use, with ECU settings tailored to enhance both low-end tractability and top-end power.
• INDUSTRY-LEADING YAMAHA POWER TUNER APP: Like having factory team support in your pocket, Yamaha’s Power Tuner App is even more user-friendly with an intuitive “Simple Tuning” slide bar for quick engine mapping selections, four-level Traction Control, a lap timer, and helpful engine and suspension tuning guides. Best of all, it’s free-of-charge.
• ADVANCED ALUMINUM BILATERAL BEAM FRAME: The updated advanced aluminum bilateral beam frame with YZ450FX-specific engine mounts 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 tackle tight, technical courses with greater confidence.
• CLASS-LEADING SUSPENSION: World renowned suspension performance straight out of the box. High-spec fully adjustable Speed Sensitive System KYB® coil spring-type fork provides exceptional bump absorption, and features toolless compression clickers for easy adjustment and fork covers to help prevent debris damage. The linkage-type rear suspension features a KYB® shock with cross-country focused damping characteristics to match the YZ450FX’s refined chassis.
• ERGONOMICS DESIGNED FOR CONTROL: The YZ450FX’s slim, flat, compact body eases rider movement for improved control, including seamless, rounded features from seat edges and side covers to the narrow fuel tank and front shroud. The rider triangle is also designed to provide increased legroom between the seat and foot pegs for enhanced rider comfort.

New For 2027

• CROSS-COUNTRY CHASSIS REFINEMENTS: Refinements have been made to both the YZ450F engine and chassis for enhanced performance in lower-speed cross-country and enduro riding.
• DUNLOP® GEOMAX AT82 TIRES: Dunlop® Geomax AT82 tires for a wide variety terrain for cross-country and enduro rides in wooded trails to wide-open deserts.
• FOUR-STROKE ENGINE: The YZ450FX adopts the same high-performance four-stroke engine of the YZ450F.
• YZ450F-DERIVED FRAME: A aluminum bilateral beam frame and advanced chassis from the YZ450F provides exceptional cornering and handling characteristics.

Other Features

• EMBEDDED DURABLE GRAPHICS: Premium competition-inspired graphics are embedded to provide excellent durability and scratch resistance.
• PVC PAD, KICKSTAND & MORE: Additional features include a PVC handlebar pad, seamless seat cover, switchgear and a folding aluminum kickstand.
• TOOL-FREE AIR FILTER ACCESS: Sleek air cleaner cover provides tool-free access to the air filter for simplified servicing.