The Ultimate Open Class Cross Country Racer

Based on the benchmark-setting YZ450F motocrosser, the YZ450FX is designed to dominate cross country competition. Its lightweight, compact chassis, powerful four-stroke engine, exceptional rider ergonomics, and Yamaha's groundbreaking next-generation Power Tuner app all carry over directly from the class-leading YZ450F. Additional modifications tailored toward enhanced XC performance include a wide-ratio transmission, larger fuel capacity, 18-inch rear wheel, side stand, skid plate, revised ECU and suspension settings, along with a 10mm lower seat height for increased maneuverability in challenging off-road conditions.

High Performance 450cc Four-Stroke Engine

The YZ450FX's thrilling liquid-cooled DOHC four-stroke engine is renowned for its 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 groundbreaking next-generation Power Tuner App is even more user-friendly with an intuitive "Simple Tuning" slide bar for quick engine mapping selections, three-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 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 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 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.

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.

Engine Type: Liquid-cooled, 4-stroke, DOHC, 4-valve

Displacement (cc): 450.0

Bore x Stroke (mm): 97.0 x 60.8

Compression Ratio: 13.0 : 1

Lubrication System: Dry sump

Fuel Management: Fuel Injection

Ignition: TCI

Starter System: Electric

Fuel Tank Capacity (L): 7.8

Final Transmission: Chain

Transmission: Constant mesh 5-speed

Frame Type: Bilateral beam

Suspension Front: Telescopic forks, 300mm travel

Suspension Rear: Swingarm (link suspension), 306mm travel

Brakes Front: Hydraulic single disc, 270mm

Brakes Rear: Hydraulic single disc, 240mm

Tyres Front: 80/100-21 51M

Tyres Rear: 120/90-18 65M

Length (mm): 2170

Width (mm): 825

Height (mm): 1265

Seat Height (mm): 955

Wheelbase (mm): 1470

Ground Clearance (mm): 330

Wet Weight (kg): 114