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2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
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2026 Kawasaki KX 450X
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
2026 Kawasaki KX 450X in Fairview, Utah
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2026 Kawasaki KX 450X

Specs

General Information

Manufacturer
Kawasaki
Kawasaki
Model Year
2026
2026
Model
KX 450X
KX 450X
Model Code
KX450NTFNN
KX450NTFNN
Color
Lime Green
Lime Green

Brakes/Wheels/Tires

Brakes

Front - Single semi-floating 270 mm Braking/Sunstar petal disc with Brembo master cylinder and dual-piston caliper

Rear - Single 240 mm Braking/Sunstar petal disc with single-piston caliper

Front - Single semi-floating 270 mm Braking/Sunstar petal disc with Brembo master cylinder and dual-piston caliper

Rear - Single 240 mm Braking/Sunstar petal disc with single-piston caliper

Tires

Front - 80 / 100-21

Rear - 120 / 80-18

Front - 80 / 100-21

Rear - 120 / 80-18

Dimensions

Length
Overall - 85.6 in.
Overall - 85.6 in.
Height
Overall - 49.6 in.
Overall - 49.6 in.
Width
Overall - 32.1 in.
Overall - 32.1 in.
Weight

Curb - 239.8 lb.* without fuel / 249.9 lb.*

*Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied)

Curb - 239.8 lb.* without fuel / 249.9 lb.*

*Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied)

Ground Clearance
13.2 in.
13.2 in.
Wheelbase
58.3 in.
58.3 in.
Seat Height
37.4 in.
37.4 in.

Drivetrain

Transmission
5-speed, return shift
5-speed, return shift
Final Drive
Chain
Chain

Electrical

Instrumentation
Engine Management Technology - rideology the app KX
Engine Management Technology - rideology the app KX
Advanced Electronics

Electronic rider aids - Power modes, Kawasaki TRaction Control (KTRC), Launch control mode

Special features - Smartphone connectivity via RIDEOLOGY THE APP KX™

Electronic rider aids - Power modes, Kawasaki TRaction Control (KTRC), Launch control mode

Special features - Smartphone connectivity via RIDEOLOGY THE APP KX™

Engine

Engine
4-stroke, DOHC
4-stroke, DOHC
Cooling
Liquid
Liquid
Cylinders
Single
Single
Displacement
449 cc
449 cc
Bore x Stroke
3.7 x 2.4 in. (96 x 62.1 mm)
3.7 x 2.4 in. (96 x 62.1 mm)
Compression Ratio
12.5:1
12.5:1
Clutch
Wet multi-disc manual and hydraulic actuation
Wet multi-disc manual and hydraulic actuation
Fuel System
DFI® with 44 mm Keihin throttle body
DFI® with 44 mm Keihin throttle body
Exhaust
Straight port and center
Straight port and center
Fuel Capacity
1.64 gal.
1.64 gal.
Modes
Power, Kawasaki TRaction Control (KTRC), Launch Control
Power, Kawasaki TRaction Control (KTRC), Launch Control

Operational

Frame
Aluminum perimeter
Aluminum perimeter
Front Suspension

49 mm Showa inverted telescopic coil-spring fork with 21-way adjustable compression and 22-way adjustable rebound damping

Wheel travel - 12 in.

49 mm Showa inverted telescopic coil-spring fork with 21-way adjustable compression and 22-way adjustable rebound damping

Wheel travel - 12 in.

Rear Suspension

Uni-Trak® gas charged shock with piggyback reservoir with adjustable dual-range compression damping (19-way low speed and 4.25 turn stepless high speed), 23-way adjustable rebound damping and stepless adjustable preload

Wheel travel - 12.1 in.

Uni-Trak® gas charged shock with piggyback reservoir with adjustable dual-range compression damping (19-way low speed and 4.25 turn stepless high speed), 23-way adjustable rebound damping and stepless adjustable preload

Wheel travel - 12.1 in.

Rake
27.0°
27.0°
Trail
4.6 in.
4.6 in.
Grips
ODI lock-on
ODI lock-on

Other

Includes
ERGO-FIT®
ERGO-FIT®

Features

Additional Vehicle Features

  • Quick-release side cover offers tool-less air filter access.
  • Streamlined ergonomics for easy rider movement.

Cross-Country Tuned Suspension

  • DOMINATE OFF-ROAD CONDITIONS: The KX™450X motorcycle's high-performance, race-ready suspension is optimized for cross-country racing, especially on aggressive trails.
  • OPTIMIZED FOR CROSS-COUNTRY: A high-performance 49mm inverted Showa coil-spring fork comes directly from the KX™450 motorcycle. Front spring rates and damping settings tuned for cross-country riding offer reassuring feedback, especially when riding on challenging trails.
  • ADJUSTABLE SETTINGS: The Uni-Trak® rear suspension system features a Showa shock with adjustable dual-range (high- and low-speed) compression damping, adjustable rebound damping, and adjustable preload. The linkage system mounts the suspension arm below the swingarm, allowing a long rear suspension stroke for precise tuning. As a result, riders can optimize damping and rear-wheel traction to suit conditions and personal preference.

Power & Performance

  • BUILT TO STAY AHEAD: The same championship-proven engine performance found in KX™ motocross bikes propels the KX™450X motorcycle to the finish line. Stay ahead of the competition with a powerful engine that delivers broad, useable torque and strong, responsive power.
  • CROSS-COUNTRY POWER: The KX™450X motorcycle's 449cc 4-stroke engine features a downdraft intake layout and centrally positioned straight exhaust port for high airflow efficiency to deliver robust power across the rev-range.
  • SMOOTH POWER DELIVERY: A flat torque curve makes it easy to get on the gas sooner, delivering smooth and powerful acceleration to pass the competition and keep you ahead of the pack.
  • OPTIMIZED PERFORMANCE: Engine maps are optimized for cross-country racing and are tunable using RIDEOLOGY THE APP KX™ on your smartphone. By tuning engine maps, the rider can change power delivery to best suit riding conditions and personal preference.
  • QUICK STARTING: Fast, reliable starting can make or break your race, from nailing that dead-engine start to get you out front early to restarting the engine after stalling. Electric start makes it as easy as pushing a button.

Additional Vehicle Features

  • Quick-release side cover offers tool-less air filter access.
  • Streamlined ergonomics for easy rider movement.

Cross-Country Tuned Suspension

  • DOMINATE OFF-ROAD CONDITIONS: The KX™450X motorcycle's high-performance, race-ready suspension is optimized for cross-country racing, especially on aggressive trails.
  • OPTIMIZED FOR CROSS-COUNTRY: A high-performance 49mm inverted Showa coil-spring fork comes directly from the KX™450 motorcycle. Front spring rates and damping settings tuned for cross-country riding offer reassuring feedback, especially when riding on challenging trails.
  • ADJUSTABLE SETTINGS: The Uni-Trak® rear suspension system features a Showa shock with adjustable dual-range (high- and low-speed) compression damping, adjustable rebound damping, and adjustable preload. The linkage system mounts the suspension arm below the swingarm, allowing a long rear suspension stroke for precise tuning. As a result, riders can optimize damping and rear-wheel traction to suit conditions and personal preference.

Power & Performance

  • BUILT TO STAY AHEAD: The same championship-proven engine performance found in KX™ motocross bikes propels the KX™450X motorcycle to the finish line. Stay ahead of the competition with a powerful engine that delivers broad, useable torque and strong, responsive power.
  • CROSS-COUNTRY POWER: The KX™450X motorcycle's 449cc 4-stroke engine features a downdraft intake layout and centrally positioned straight exhaust port for high airflow efficiency to deliver robust power across the rev-range.
  • SMOOTH POWER DELIVERY: A flat torque curve makes it easy to get on the gas sooner, delivering smooth and powerful acceleration to pass the competition and keep you ahead of the pack.
  • OPTIMIZED PERFORMANCE: Engine maps are optimized for cross-country racing and are tunable using RIDEOLOGY THE APP KX™ on your smartphone. By tuning engine maps, the rider can change power delivery to best suit riding conditions and personal preference.
  • QUICK STARTING: Fast, reliable starting can make or break your race, from nailing that dead-engine start to get you out front early to restarting the engine after stalling. Electric start makes it as easy as pushing a button.