2025 Kawasaki KX450 (KX450J)
NSW • Dealer new bike in stock
21
CategoryMotocross 4 Stroke
Engine Size449cc 4 stroke
Comments from the dealer
Built to win straight out of the crate, the 2025 Kawasaki KX450 in iconic Lime Green is the ultimate motocross machine for riders who demand factory-level performance and precision. Developed from Kawasaki’s championship-winning racing program, the KX450 features a powerful 449cc fuel-injected engine that delivers strong, instant throttle response and impressive top-end power, giving riders the edge whether launching out of the gate or charging through deep ruts. The lightweight aluminium perimeter frame provides exceptional balance and agility, allowing the bike to feel planted yet responsive in every corner.
Advanced rider technology comes standard, including Kawasaki Traction Control and selectable power modes that can be adjusted to suit track conditions, helping riders maintain control and consistency lap after lap. The high-spec suspension package with fully adjustable components delivers excellent feedback and confidence over jumps, braking bumps, and rough terrain, while strong braking performance ensures precise stopping power when it matters most. Ergonomics are designed for aggressive riding, with a slim chassis and comfortable rider triangle that allows effortless movement on the bike.
Buying your new KX450 from St Peters means more than just owning a race bike. Your motorcycle is professionally assembled, fully prepped, and backed by expert advice from a team that understands motocross. We offer genuine parts, accessories, ongoing support, and peace of mind you simply won’t get from a private seller. If you’re ready to line up on a machine built to perform at the highest level, contact our dealership today and secure your 2025 Kawasaki KX450.
Bike details
øNetwork Id
OAG-AD-25367681
Bike
Motocross Manual 5sp 450cc (KX450MSFNN)
Body
Motocross 4 Stroke
Colour
Green
Engine Capacity
449 cc
Configuration
449cc, 4-stroke, Liquid cooled, 4-valve, DOHC, 1-cyl
Country of Origin
JAPAN
Stock Number
N15878
Details
Bike Type
Motocross
Series
KX
Model Code
KX450MSFNN
LAMS Approved
False
Colours
Lime Green
Ride Away Price
False
Country of Origin
JAPAN
Grey Import
False
Is Limited Edition
False
Engine
Engine Description
450
Engine Config
Vertical
Engine Capacity
449cc
Engine Type
Piston
Engine Stroke
4
Bore
96.0mm
Stroke
62.1mm
Cam Type
DOHC (Double Over Head Cam)
Cylinders
1
Valves Per Cylinder
4
Compression Ratio
12.5:1
Induction System
Aspirated
Carburettor
DFI - Digital Fuel Injection
Throttle Bore
44mm
Cooling
Liquid
Lubrication
Semi-Dry Sump; Forced Lubrication
Exhaust Config
1 Into 1
Start
Ignition
Digital
Ignition Description
DC-CDI
Starter
Electric
Electrics
Engine Voltage
12Volt
Battery Description
Lithium
Charging Method
Alternator & Regulator-Rectifier
Fuel & Emissions
Fuel Type
Petrol
Recommended RON
95
Fuel Tank Capacity
6.2L
Transmission
Transmission Description
Return shift
Primary Drive
2.727 (60/22)
Drive Type
Chain
Final Drive Ratio
3.846 (50/13)
Gear Type
Manual
Gear Number
5
Gear Change Method
Left foot lever
1st Gear Ratio
1.750
2nd Gear Ratio
1.412
3rd Gear Ratio
1.188
4th Gear Ratio
1.000
5th Gear Ratio
0.875
6th Gear Ratio
3.846
Clutch Type
Wet; Multi-disc; Brembo Hydraulic
Chassis & Suspension
Chassis Description
Engine acting as stress member
Frame Material
Aluminium
Frame Design
Perimeter
Rake (Caster Angle)
26.60degrees
Trail
115.0mm
Handlebar Description
Renthal Fat Bar
Side Stand
Not Available
Front Suspension
Showa Upside down/Inverted coil-spring telescopic fork; Adjustable compression/rebound & spring preload
Front Suspension Travel
305.0mm
Rear Suspension
Uni-Trak swingarm; Single Showa shock absorber; Adjustable dual-range (high/low speed) compression damping; Rebound damping & spring preload
Rear Suspension Travel
307.0mm
Fork Diameter
49.0mm
Swingarm Type
Dual Sided
Swingarm Description
Unit-Trak
Brakes
Front Brake Description
Single semi-floating petal disc; Brembo caliper; Hydraulic
Front Brake Caliper(s)
Double Piston
Front Brake Diameter
270.0mm
Rear Brake Description
Single petal disc; Hydraulic
Rear Brake Caliper(s)
Single Piston
Rear Brake Diameter
240.0mm
ABS
Not Available
Linked Braking System
Not Available
Wheels & Tyres
Wheel Type
Black alumite; Laced-spokes
Wheel Size Front
21"
Wheel Size Rear
18"
Rear Tyre
120/80-19" (63M) Dunlop MX3S
Front Tyre
80/100-21" (51M) Dunlop MX3S
Dimensions & Weights
Length
2180mm
Width
820mm
Height
1270mm
Wheelbase
1480mm
Ground Clearance
345.0mm
Dry Weight
108.4kg
Wet / Operational Weight
112.9kg
Seat Height
960mm
Seating Capacity
1
Safety & Security
Traction Control
Standard
Launch Control
Standard
Alarm
Not Available
Convenience
Seat Description
Slip resistant surface
Seating Position
Upright
Adjustable Front Footrests
Standard
Audio/Visual Communications
Bluetooth
Standard
About this dealer
Location
New South Wales
Member since
2017
License number
6000
Current ad listings
74
Get in touch with the dealer
Call the dealer
(02) 8318 7076
Bike code: 12671Expert bike reviews on Kawasaki KX450 (KX450J)
$12,444
Excl. Govt. ChargesGet in touch with the dealer
Call the dealer
(02) 8318 7076
Bike code: 12671ø Specifications have been sourced from Automotive Data Services Pty Ltd (Redbook) and are based on manufacturer standard features and specifications, some of which may require subscription. Actual features and specifications for this vehicle may differ. Please confirm these details with the seller.
‡ This is an estimated figure calculated with reference to ADR 81/02 and is made on the assumption the vehicle is at maximum factory fuel/energy capacity. It does not take into account factors such as individual driving habits, terrains and driving conditions which may vary depending on the driver and the vehicle.
Lic. No.: 6000, Procycles - St PetersPhone: 02 8318 7076, Car Code: 1267
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