All-New Aluminum Bilateral Beam Frame

A completely redesigned 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 trails 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 now features toolless compression clickers for easy adjustment and new 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 new YZ450FX's refined chassis.

High Performance Braking System

Compact front and rear brake calipers work with aggressive pad compounds and lightweight discs to provide exceptional braking power and control, efficiently dissipate heat, and reduce unsprung weight.

New High Performance 450cc Four-Stroke Engine

The completely redesigned 450cc liquid-cooled DOHC four-stroke engine is lighter, more compact and features stronger pulling power across the entire rev range. The rev limit is also increased by 500 rpm for longer over-rev, further boosting the YZ450FX's broad power character.

New Yamaha Power Tuner App

Yamaha’s industry-leading Power Tuner App has been extensively updated, retaining the full functionality of the previous version but now even easier to understand, easier to use, with more functionality. Engine mapping can now be made using an intuitive new slide bar. There is also a new lap timer, Traction Control tuning, and bike set-up guides. Best of all, it's free-of-charge.

Slimmer Body & Improved Ergos

A new slimmer, flatter and more compact body eases rider movement for improved control, including more seamless, rounded features from seat edges and side covers to a more narrow fuel tank and front shroud. The rider triangle is also improved with increased legroom between the seat and footpegs for enhanced rider comfort.

Specification:

ENGINE

• Engine Type - 450cc liquid-cooled DOHC 4-stroke; 4 titanium valves
• Bore x Stroke - 97.0mm × 60.9mm
• Compression Ratio - 13.0:1
• Fuel Delivery - Mikuni® fuel injection, 44mm
• Transmission - 5-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 - 120/90-18 Dunlop® Geomax MX33