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Kx450 - 2025 Specifications and Reviews

The 2025 Kawasaki KX450 is a competitive motocross machine designed for experienced off-road riders seeking professional-level performance. Its 449cc liquid-cooled four-stroke engine delivers responsive power through advanced fuel injection and DOHC technology, while the 5-speed transmission enables precise control across varied terrain. Built for racing and serious trail riding, the KX450 is recognized for its aggressive handling and race-ready engineering.

2025
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General information

Color OptionsLime Green
CategoryCross / motocross
ModelKawasaki KX450
 
 

Engine and Transmission Specifications

StartingElectric
ClutchWet multi-disc, manual
Final DriveChain (final drive)
Gearbox5-speed
Cooling SystemLiquid
IgnitionDigital CDI with 3 Coupler Options
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
InductionInjection. DFI® with 44mm Keihin throttle body
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Compression Ratio12.5:1
Engine TypeSingle cylinder, four-stroke
Capacity449.0 ccm (27.40 cubic inches)
 
 

Physical measures and capacities

Fuel Capacity6.20 litres (1.64 US gallons)
Wheelbase1480 mm (58.3 inches)
Ground Clearance345 mm (13.6 inches)
Overall Width820 mm (32.3 inches)
Overall Length2180 mm (85.8 inches)
Overall Height1270 mm (50.0 inches)
Seat Height960 mm (37.8 inches) If adjustable, lowest setting.
Wet Weight112.6 kg (248.2 pounds)

Kx450 dimensions and frame

WheelsWire spoked
Rear BrakesSingle disc. Single-piston caliper.
Brake Disc Diameter240 mm (9.4 inches)
Front BrakesSingle disc. Semi-floating petal discs
Rear Tyre120/80-19
Front Tyre80/100-21
Rear Wheel Travel307 mm (12.1 inches)
Rear SuspensionUni-Trak® gas charged shock with piggyback reservoir with dual-range (4 turns stepless high speed/19-way low-speed) compression damping, 38-way rebound damping and adjustable preload
Front Wheel Travel305 mm (12.0 inches)
Front Suspension49mm inverted telescopic coil-spring fork with 16-way compression damping and 16-way rebound damping
Trail115 mm (4.5 inches)
FrameAluminum perimeter

Other specs

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CommentsSmartphone Connectivity via RIDEOLOGY THE APP
Rake (fork angle)27.6°
Lubrication systemForced lubrication, semi‑dry sump
Year of manufacture2025

Rider Reviews

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