Yamaha YZ450FX (2025)

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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
Year2025

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. 3 Levels

Electrical & Electronics System

ConnectivityPower Tuner App
Traction Control SystemYes. 3 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

  • The Ultimate Open Class Cross Country Racer
  • High Performance 450cc Four-Stroke Engine
  • Industry-Leading Yamaha Power Tuner App
  • Advanced Aluminum Bilateral Beam Frame
  • Class-Leading Suspension
  • High Performance Braking System
  • Ergonomics Designed for Control
  • Traction Control System
  • On-The-Fly Engine Mapping Selection
  • Advanced Fuel Injection
  • Compact Lightweight Clutch
  • Wide-Ratio Five-Speed Transmission
  • Electric Starter System
  • Cross Country Wheels & Tires
  • Race-Winning Details
  • GNCC Focus
  • Embedded Graphics

Yamaha YZ450FX (2025) Color Options

  • Team Yamaha Blue (US)
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