Yamaha YZ450FX (2026)

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Key Specifications

Engine TypeLiquid-cooled DOHC 4-stroke; 4 titanium valves
Engine Capacity450 cc / 27.4 cubic inches
Max Powern/a
Max Torquen/a
Top Speedn/a
Fuel Tank Capacity8 L / 2.1 US gallons
Weight (Wet/Kerb)114 kg / 251 lbs
Seat Height955 mm / 37.6 inches
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All Specifications

Make & Model

ModelYamaha YZ450FX
Year2026

Engine

Engine TypeLiquid-cooled DOHC 4-stroke; 4 titanium valves
Displacement450 cc / 27.4 cubic inches
Bore x Stroke97 x 60.9 mm
Compression Ratio13 : 1
Number of Cylinders1
Max Horsepowern/a
Max Torquen/a
Valve TrainDOHC
Valves per Cylinder4
Ø intake / exhaust valve dia39 mm titanium valves
Engine Management SystemMikuni® fuel injection, 44mm
Cooling SystemAir Cooled
Ignition SystemTCI

Performance

Top Speedn/a

Transmission

ClutchWet multiplate clutch, hydraulic
GearboxConstant-mesh 5-speed
Final DriveChain
Traction Control SystemYes. 4 Levels

Electrical & Electronics System

ConnectivityPower Tuner App
Traction Control SystemYes. 4 Levels

Chassis & Suspension

Frame TypeAdvanced aluminum bilateral beam frame
Front SuspensionKYB® spring-type fork with speed sensitive damping; fully adjustable
Front Suspension Travel300 mm / 11.8 inches
Rear SuspensionKYB® single shock; fully adjustable
Rear Suspension Travel305 mm / 12 inches
Rake27 °
Trail122 mm / 4.8 inches

Wheels & Brakes

WheelsPremium Excel® wheels
Front Tire Size80/100-21 Dunlop® Geomax MX33F
Rear Tire Size120/90-18 Dunlop® Geomax MX33
Front BrakesHydraulic disc, 270mm
Rear BrakesHydraulic disc, 240mm

Dimension & Weights

Overall Length2170 mm / 85.4 inches
Overall Width825 mm / 32.5 inches
Overall Height1270 mm / 50 inches
Seat Height955 mm / 37.6 inches
Wheelbase1475 mm / 58 inches
Ground Clearance330.2 mm / 13 inches
Fuel Tank Capacity8 L / 2.1 US gallons
Wet (kerb/curb) Weight114 kg / 251 lbs

Features

  • A new industry-first ECU lock function helps prevent theft and unauthorized engine start-up via a password-required lock.
  • New four-level Traction Control selectable within the Yamaha Power Tuner App maintains ideal rear wheel traction.
  • Compact, lightweight and durable clutch assembly yields smooth engagement and excellent feel.
  • The YZ450FX features a compact electric starter system to minimize restart delays and add convenience.
  • Tri-shaft transmission layout vertically stacks the transmission shafts for a lighter, more compact transmission.
  • A wide-ratio 5-speed transmission is geared for cross country, from tight technical single track to high speed open sections.
  • Lightweight handlebar-mounted switchgear allows the rider to quickly select between preloaded engine maps.
  • A convenient “Simple Tuning” slide bar further simplifies engine mapping within the Power Tuner App.
  • Yamaha’s industry-leading Power Tuner App offers the ability to tune air/fuel mixture and ignition timing to suit rider preference.
  • An advanced fuel injection system uses a 44mm throttle body to ensure optimum fuel atomization and air/fuel calibration.
  • ECU settings are tailored to suit the specific needs of cross country and enduro competition.
  • Engine features include a reversed cylinder head layout, forged aluminum piston, titanium valves and dry sump lubrication.
  • The YZ450FX’s advanced four-stroke engine is light, compact and renowned for its incredibly broad pulling power.
  • Fully adjustable Speed Sensitive KYB® fork delivers exceptional balance between handling and bump absorption.
  • Premium Dunlop® Geomax MX33 tires achieve an ideal balance of traction and durability.
  • The YZ450FX’s 18-inch rear wheel comes laced with a three-cross-spoke pattern for improved impact absorption and rider feel.
  • Premium Excel® wheels are strong, lightweight and reduce unsprung weight without sacrificing durability.
  • Wide foot pegs with lightweight aluminum alloy mounting brackets provide additional control and comfort.
  • Tapered aluminum handlebars are secured to four-position adjustable handlebar mounts.
  • The rider triangle is designed to provide increased legroom between the seat and foot pegs for enhanced rider comfort.
  • The YZ450FX’s slim, flat, compact body eases rider movement for improved control.
  • Large 270mm front and 240mm rear discs combine with Nissin calipers to provide exceptional stopping power and control.
  • A linkage-type rear suspension with KYB® shock features specially-tuned damping characteristics to match the chassis.
  • The fork now includes a hand-adjustable knob for easy compression adjustments.
  • An advanced aluminum bilateral beam frame strikes the perfect balance of precise cornering performance and handling stability.
  • Sleek air cleaner cover provides tool-free access to the air filter for simplified servicing.
  • Premium competition-inspired graphics are embedded to provide excellent durability and scratch resistance.
  • Other enduro-specific features include a 2.1-gallon fuel tank with warning indicator, composite engine guard and sealed drive chain.
  • Additional features include a PVC handlebar pad, seamless seat cover, updated switchgear and a folding aluminum kickstand.

Yamaha YZ450FX (2026) Color Options

  • Team Yamaha Blue (US)
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