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2024 Kawasaki KX™450

2024 Kawasaki KX™450
Lime Green
MSRP: $10,499.00
Manufacturer: Kawasaki
Condition: New


The KX legacy represents a long line of champions. The drive to produce more has not slowed down. Our all-new flagship race machine, the KX450 motorcycle, offers next-level engineering and power to dominate the track. Over the decades, we've learned what it takes to win and stay on top. The KX450 embodies this legacy to the fullest.



KTRC (Kawasaki Traction Control)
KTRC, Kawasaki's advanced traction control system provides both enhanced sport riding performance and the peace of mind to negotiate slippery surfaces with confidence. Multiple rider-selectable modes (the number of modes varies by model) offer progressively greater levels of intrusion to suit the riding situation and rider preference. Less intrusive modes maintain optimum traction during cornering. Designed with sport riding in mind, they facilitate acceleration out of corners by maximizing forward drive from the rear wheel. And because Kawasaki’s sophisticated software bases its dynamic analysis on the chassis’ orientation relative to the track surface (rather than relative to a horizontal plane), it is able to take into account corner camber, gradient, etc., and adapt accordingly. In the more intrusive modes (and for some models, in any mode), when excessive wheel spin is detected, engine output is reduced to allow grip to be regained, effectively enabling riders to negotiate both short, slippery patches (train tracks or manhole covers) and extended stretches of bad roads (wet pavement, cobblestone, gravel) with confidence. Models equipped with IMU incorporate chassis-orientation feedback to offer even more precise management.
Launch Control Mode
In motocross racing, getting a good start is critical. A few tenths of a second can make the difference between getting the holeshot or not. In slippery conditions, getting the maximum drive from a motocrosser requires precise control of the both the clutch and throttle. Launch Control Mode helps riders get a good start by complementing high-level technique with engine management. Featured on a mass-production motocrosser for the first time on the Kawasaki KX™450F, the system activates a separate engine map designed to get a more efficient start off the line. The system is designed to the same specifications as that used by our factory racers competing in the AMA Supercross and Motocross championships. Launch Control Mode is activated simply by pressing the button on the handlebar. The Launch Control map slightly retards ignition timing to help tame the engine's strong torque and reduce wheel spin off the start. Launch Control Mode is only active in the first two gears after the launch, disengaging and returning to the standard engine map automatically once the rider shifts into third gear. The system gives riders a great advantage when lining up at the gate and puts them in a better position to win.
Power Modes
Models equipped with multiple Power Modes offer riders an easily selectable choice of engine power delivery to suit riding conditions or preference. In addition to Full Power mode, one (Low) or two (Middle, Low) alternate mode(s) in which maximum power is limited and throttle response is milder are provided.
Smartphone Connectivity
Clever technology enables riders to connect to their motorcycle wirelessly. Using the smartphone application “RIDEOLOGY THE APP,” a number of instrument functions can be accessed, contributing to an enhanced motorcycling experience. Vehicle information (such as the odometer, fuel gauge, maintenance schedule, etc) can be viewed on the smartphone. Riding logs (varies by model, but may include GPS route, gear position, rpm, and other information) can be viewed on the smartphone. When connected, telephone (call, mail) notices are displayed on the instrument panel. Riders can also make changes to their motorcycle’s instrument display settings (preferred units, clock and date setting, etc) via the smartphone. And on certain models, it is even possible to check and adjust vehicle settings (such as Rider Mode, electronic rider support features, and payload settings) using the smartphone.
Proper fit is key for rider comfort and control. However, the ideal fit varies from rider to rider, depending on their physical dimensions and riding style. ERGO-FIT® is an interface system designed to allow riders to find their ideal riding position. Various points of the chassis interface (the handlebar, footpegs and seat, etc.) can be adjusted through a combination of interchangeable parts and parts with adjustable positions. This enables a wide range of riders to find a riding position that offers both comfort and control. Feeling at one with their machine, they will be able to experience how Kawasaki machines are fun and rewarding to ride. *Adjustable parts and their range of adjustability vary by model.


4-stroke single, DOHC, liquid-cooled
Bore X Stroke
96.0 x 62.1mm
Compression Ratio
Fuel System
DFI® with 44mm Keihin throttle body
Digital CDI with handlebar-controlled Power Modes
5-speed, return shift, with wet multi-disc manual clutch and hydraulic clutch actuation
Final Drive
Electronic Rider Aids
Power Modes, Kawasaki TRaction Control (KTRC), Launch Control Mode


Front Suspension/Wheel Travel
49mm inverted telescopic coil-spring fork with 21-way adjustable compression and 22-way adjustable rebound damping/12.0 in
Rear Suspension/Wheel Travel
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/12.1 in
Front Tire
Rear Tire
Front Brakes
Single semi-floating 270mm Braking/Sunstar petal disc with Brembo master cylinder and dual-piston caliper
Rear Brakes
Single 240mm Braking/Sunstar petal disc with single-piston caliper


Frame Type
Aluminum perimeter
Rake & Trail
26.6°/4.5 in
Overall Length
85.8 in
Overall Width
32.3 in
Overall Height
50.0 in
Ground Clearance
13.6 in
Seat Height
37.8 in
Curb Weight
238.3 lb* without fuel / 248.2 lb*
Fuel Capacity
1.64 gal
58.3 in
Special Items
Smartphone Connectivity via RIDEOLOGY THE APP
Color Choices
Lime Green
Not Available
Kawasaki Protection Plus™ (optional)
Not Available


Power and Performance

  • Power Through The Finish The powerful 449cc engine features a redesigned downdraft intake layout, new cylinder head, and new centrally positioned straight exhaust port for high airflow efficiency to deliver increased power across the rev-range.
  • Pull Ahead A flat torque curve makes it easier to get on the gas sooner, delivering smooth and powerful acceleration to pass the competition and keep you ahead of the pack.
  • Reliable Starting Being able to restart your engine quickly after a stall can make or break a race. Powered by a compact and lightweight Li-ion battery and supported by an automatic centrifugal decompression system, all it takes is the push of a button to start up.

Race-Ready Suspension

  • Race Ready The high-performance 49mm inverted Showa coil-spring fork handles suspension duties up front. The front fork's internal valving, adjusters, and oil level are fine-tuned to deliver optimized settings. The large-diameter inner tubes (the same size as on our factory motocross racers) enable the use of large damping pistons, delivering smooth action and firm damping.
  • Championship Proven The new 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 result is optimal damping and rear-wheel traction.

Advanced Technology

  • Power Delivery The all-new KX™450 bike features power mode selection which allows riders to switch between two power modes (Normal or Mild response) quickly and easily. Riders can select between Normal (Full Power) and Mild response to suit riding conditions or preference. Mild response is good for riders still familiarizing themselves with the high-performance of the KX450.
  • Kawasaki TRaction Control The all-new KX™450 is the first KX™ model to feature Kawasaki TRaction Control (KTRC) at the push of a button. By using the traction button (T) on the left handlebar, riders can quickly and easily select from two levels (Weak or Strong) of traction control to suit riding conditions and preference. Riders may also elect to turn the system off.
  • Every Second Counts A factory-style launch control system helps put the KX™450 bike’s power to the ground for maximum acceleration. By pushing the Mode and Traction buttons simultaneously, riders activate the launch control system which is designed to deliver efficient race starts in low-traction conditions, making the holeshot yours for the taking.
  • Smartphone Connectivity Thanks to Smartphone Connectivity, riders can adjust engine mapping straight from their phones via RIDEOLOGY THE APP KX™, without the need for extra equipment. The app also provides KX FI Calibration to check fuel volume and ignition timing, engine monitoring for checking engine metrics, a maintenance log for recording memo-style logs and many more useful functions.
  • Light Pull & Self-Adjusting A coned disc-spring hydraulic clutch offers light clutch pull and a wide engagement range. Large diameter plates provide enhanced fade resistance.

Chassis and Ergonomics

  • Advanced Stopping Power Next-level stopping power matches incredible acceleration capability. The new high-performance Brembo brake system features drilled Braking/Sunstar discs (270/240mm) paired with a Brembo caliper and master cylinder at the front and a Nissin caliper and master cylinder at the rear. The high-performance system offers increased controllability on the brakes, contributing to enhanced corner entry.
  • Increased Traction Based on feedback from Kawasaki’s factory race teams, the KX™450 now features a larger-diameter rear hub. The hub’s increased rigidity allows loads to be transferred more directly to the ground, contributing to greater rear-end traction. New Dunlop MX34 front and rear tires offer increased longevity, improved ground contact contributing to better cornering performance in the front, and improved bump absorption performance and increased traction in the rear.
  • Balance Meets Precision A redesigned lightweight aluminum perimeter frame accommodates the updates to the engine’s intake and exhaust systems, while delivering a high level of both light, nimble handling and a composed character. Optimized rigidity balance contributes to increased front-end feel that translates to improved cornering performance in a wider range of conditions.
  • Get a Grip Wide footpegs ensure excellent grip for optimum comfort and control, and make it easier to weight the pegs.
  • Perfect Fit Find your best performance with the Kawasaki ERGO-FIT® advantage. Four handlebar positions and two footpeg positions allow you to tailor the KX™450 motorcycle to your body size, riding style, and preference.
  • ERGONOMIC BODYWORK Newly designed shrouds, side panels, and rear fender are firmer and eliminate hooking points, further facilitating rider movement.
  • RENTHAL® FATBAR® HANDLEBAR & ODI LOCK-ON GRIPS A factory-style aluminum Renthal® Fatbar® handlebar comes standard. New medium-compound ODI Lock-On Grips offer excellent grip feel, while their screw-type fastening system greatly facilitates the task of swapping grips.
  • Improved Access A new quick-release side cover can be removed without tools, allowing for easier access to the air filter element.

All inventory listed is subject to availability and prior sale. Manufacturer's Suggested Retail Price (MSRP) if shown for a vehicle excludes set-up, freight, taxes, title, licensing or other dealer charges, and is subject to change. Individual prices may vary. Please request a quote for specific pricing.

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