Kawasaki KX450 (MY23)

The Bike That Builds Champions


(Plus On-Road Costs)

or pay $53.00* per week.

Features of the Kawasaki 2023 KX450

Hard-hitting power | Factory-style engine & chassis

  • Finger-follower valve actuation
  • Coned disc-spring hydraulic clutch
  • Factory-style Launch Control Mode
  • Setting-adjustable motocross ECU
  • Slim aluminium perimeter frame
  • ERGO-FIT adjustable handlebar and footpeg positions
  • Factory-style Renthal Fatbar

Overview of the Kawasaki KX450 model range

With more Supercross and Motocross championships than any other manufacturer, the KX name is synonymous with winning. The KX450 motorcycle represents the flagship of the KX lineup, built with the sole purpose of dominating the track. Over the past four decades, we’ve learned what it takes to win and stay on top. Our dedication to building the ultimate machine is undeniable, and the KX450 represents this to the fullest.



Championship-proven Performance: Recognized as the most powerful motocrosser in the paddock, the KX450 boasts innovative engine technology inspired by Kawasaki’s race machines. Features like finger-follower valve actuation and a bridged-box bottom piston that contribute to its lofty performance are backed by electric start and a hydraulic clutch, further elevating its race-winning potential.

  • SERIOUSLY POWERFUL ENGINE - Hard-hitting Power: The high-acclaimed KX450 engine delivers hard-hitting power, while its flat torque curve makes it easy to get on the gas. Finger-follower valve actuation (a valve train designed by Kawasaki’s World Superbike engineers) enables large-diameter valves and aggressive cams. Downdraft-style intake and friction-reduction efforts (like a dry film lubricant on the piston skirt) further contribute to the high performance.
  • ELECTRIC START - Reliable Starting: Being able to restart an engine quickly during a race can mean the difference between keeping your lead, or having to fight your way back through the pack. Electric start makes restarting the engine as easy as pushing a button.
  • HYDRAULIC CLUTCH - Light & Responsive: The hydraulic clutch offers direct feel and light lever action. Revised construction using coned-disc springs results in lighter clutch actuation when the lever has been pulled in, and a wider clutch engagement range, which facilitates control (especially when half-clutching).
  • ADJUSTABLE MX ECU - Easy Engine Tuning: Lightweight and designed for the rigours of off-road riding, the ECU contains multiple programmable engine maps to offer riders an advantage on the race course. Using the provided DFI couplers, riders are able to easily switch from one to another of the three engine maps to suit riding conditions. The plug-and-play style system is quick, easy and stress-free. Each of the three maps can be reprogrammed using the optional KX FI Calibration Kit. Non-current colour shown
  • LAUNCH CONTROL - Holeshot Advantage: Factory-style launch control system increases the chance of getting a good start by helping riders maximise grip when starting on a low-traction surface.


Light, Nimble Handling: Trimmed of all unnecessary material, this is the leanest KX450 chassis to date. Frame, suspension, brakes and ergonomics have all been optimized to make the KX450 even better equipped to turn quick lap times.

  • FRAME - Lightweight Aluminium Perimeter Frame: Complementing the powerful engine, light, nimble handling contributes to the KX450’s quick lap times. Thanks to extensive weight-reduction efforts, the lightweight aluminium perimeter frame contributes to a highly-competitive, low overall weight of only 110.2 kg.
  • SUSPENSION - Race-ready Suspension: Handling suspension duties up front is a high-performance ø49 mm inverted coil-spring fork. The large-diameter inner tubes (the same size as on our factory racers) enable the use of large damping pistons, delivering smooth action and firm damping. At the rear, New Uni Trak rear suspension contributes to superb rear-wheel traction.
  • BRAKES - Strong Stopping Power: The oversized ø270 mm semi-floating front disc complemented by a ø250 mm disc at the rear deliver strong stopping power and a high level of control.
  • BODYWORK - Slim, Ergonomic Bodywork: The narrow frame and minimalistic bodywork offer a slim riding position that facilitates control.
  • ADJUSTABLE ERGONOMICS - Get the Perfect Fit: A choice of four handlebar positions and two footpeg positions allows riders to tailor their riding position to suit body size and preference. Factory-style ø28.6 mm (1-1/8”) Renthal aluminium Fatbar helps reduce vibration and shocks transmitted to the rider, while a lower, closer grip position helps put the rider in a position that makes it easier to weight the front wheel.

Kawasaki KX450 (MY23)

The Bike That Builds Champions


(Plus On-Road Costs)

or pay $53.00* per week.


Engine Management TechnologyLaunch Control Mode
Chassis Management TechnologyERGO-FIT


Engine 4-stroke Single
Displacement 449 cc
Bore x Stroke 96.0 x 62.1 mm
Compression Ratio 12.5:1
Valve System DOHC, 4 valves
Fuel System Fuel injection: ø44 mm x 1
Ignition Digital DC-CDI
Starting Electric
Cooling Liquid-cooled
Lubrication Forced lubrication, semi-dry sump
Transmission 5-speed, return
Primary Reduction Ratio 2.727 (60/22)
Gear Ratio: 1st 1.750 (28/16)
Gear Ratio: 2nd 1.412 (24/17)
Gear Ratio: 3rd 1.188 (19/16)
Gear Ratio: 4th 1.000 (19/19)
Gear Ratio: 5th 0.875 (21/24)
Final Reduction Ratio 3.846 (50/13)
Clutch Wet multi-disc, manual
Final Drive Chain


Frame Perimeter, aluminum
Front Suspension ø49 mm inverted fork with adjustable compression and rebound damping
Rear Suspension New Uni Trak with adjustable dual-range (high/low-speed) compression damping, adjustable rebound damping and adjustable spring preload
Front Wheel Travel 305 mm
Rear Wheel Travel 307 mm
Rake 27.6°
Trail 122 mm
Steering Angle (L/R) 42° / 42°
Front Tyre 80/100-21 51M
Rear Tyre 120/80-19 63M
Front Brake/s Semi-floating ø270 mm petal disc
Front Caliper/s Dual-piston
Rear Brake ø250 mm petal disc
Rear Caliper Single-piston


Dimensions (LxWxH) 2,185 x 820 x 1,265 mm
Wheelbase 1,485 mm
Road Clearance 340 mm
Seat Height 955 mm
Curb Mass 110.4 kg
Mass without Fuel 105.8 kg
Fuel Capacity 6.2 litres
Model Code KX450JPFNN


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Our finance options revolve around three key principles; quick, competitive, and hassle free. No matter what your circumstances are, we urge you to fill out a quick online enquiry. We have multiple lenders to choose from so our Business Managers will do all the work when it comes to finding the best possible package. With low bank rates and same-day approvals on most processed applications, Sydney City Motorcycles is a convenient one stop shop.

We can finance additional extras such as accessories or riding gear, extended warranties, and various other extras that will ensure the absolute maximum safety and enjoyment after your purchase.

Put simply, if you are looking to borrow money to fast track your purchase then Sydney City Motorcycles has you covered!


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Our insurance products include but are not limited to:

  • Fire and theft.
  • Fully comprehensive.
  • Loan protection insurance.
  • Death and permanent disability.
  • Tyre and rim.

Bike Stock No: KAW-KX450-MY23_1, quote this when you contact us to fast-track your enquiry.

* Disclaimer: Weekly payments provided for indicative purposes and are to approved purchases only. The payments don’t consider your personal situation, mortgaged property insurance, payment protection, warranty options, gap cover or accessories. Figure above is based upon a personal finance application for the advertised price of the vehicle, additional costs may be applicable. Repayments are based on 10.95% over 60 months with 10% deposit.

Comparison rate is based on a secured consumer fixed rate loan of $30,000 on a term of 5 years. WARNING: This comparison rate is true only for the example given and may not include all fees and charges. Different terms, fees or other loan amounts might result in different comparison rates. Terms and conditions are available in-store or on request. For accurate repayments based on your actual situation please speak to one of our fully qualified finance managers.

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