Continuing to Build Champions
More Supercross and Motocross championships than any other manufacturer; the KX name continues to be the bike for champions. The KX450 motorcycle is the largest capacity in the Kawasaki motocross lineup. It is built with the sole purpose of dominating the track. Over the past four decades, Kawasaki have researched what it takes to win and stay on top. The KX450 is the physical representation of these years of motorcycle research. Our dedication to building the ultimate machine is undeniable, and the KX450 represents this to the fullest. Getting on the podium is now up to you!
- POWERFUL 449cc ENGINE
- ELECTRIC START
- SHOWA A-KIT TECHNOLOGY SUSPENSION
POWER & PERFORMANCE
The KX450 engine delivers broad, useable torque and strong, responsive power across the rev range. From the starting gate to the finish line, this race-ready machine is built to stay ahead of the pack.
POWER THROUGH THE FINISH
The powerful 449cc engine features friction reduction coating on the piston for increased engine performance.
EVERY SECOND COUNTS
A factory-style launch control system helps put the bike’s power to the ground for maximum acceleration at the start of the race, making the holeshot yours for the taking.
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.
FINELY TUNED POWER
Use the DFI couplers to choose engine settings to suit your riding style or track conditions. This plug-and-play style system allows quick and easy selection from three pre-programmed fuel injection and ignition mapping settings. Fine tune your ECU setting with factory precision. The KX FI Calibration Kit* features a handheld controller that enables adjustment of fuel mapping and allows storage of presets without a PC.
*Sold separately as a Kawasaki Genuine Accessory
LEAVE THEM IN THE DUST
Take the lead with proven race-winning performance. The highly adjustable suspension package delivers smooth action, firm damping and contributes to optimal traction.
The 49mm Showa Coil Spring Front Fork combined with A-KIT Technology deliver excellent handling. Large-diameter inner tubes allow the use of large damping pistons for race-winning performance while a large-diameter front axle provides exceptional front-wheel traction.
The Uni-Trak rear suspension system features adjustable dual-range (high- and low-speed) compression damping, adjustable rebound damping, and adjustable preload. The result is optimal damping and rear-wheel traction.
RIDE WITH CONFIDENCE
From quick, reliable starting to advanced braking power, the KX450 motorcycle offers superior features designed to inspire confidence. What's more, this race-ready machine is backed by decades of championship-proven experience.
ADVANCED STOPPING POWER
Next-level stopping power matches incredible acceleration capability. Up front, an oversized 270mm Braking petal disc with dual-piston caliper offers sharp response and a strong, consistent feel. In the rear, a large-diameter 250mm Braking petal disc complements the front for race-ready performance.
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.
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.
BALANCE MEETS PRECISION
A lightweight aluminum perimeter frame and swingarm provide overall rigidity balance, contributing to precise cornering. Front-end feel is predictable and maximum traction is gained at the rear wheel.
GET A GRIP
Wide footpegs ensure excellent grip for optimum comfort and control, and make it easier to weight the pegs.
Find your best performance with the Kawasaki ERGO-FIT advantage. Four handlebar positions and two footpeg positions allow you to tailor the KX450 motorcycle to your body size, riding style and preference.
A factory-style aluminum Renthal Fatbar handlebar comes standard. With grips positioned low and close to the body, riders can shift weight forward easily to improve front wheel traction, and increase front traction feel, to ride more confidently at the limit.
|Engine Type||4-stroke, liquid cooled, single cylinder|
|Bore x Stroke||96.0 x 62.1 mm|
|Valve System||DOHC, 4 valves|
|Fuel System||Fuel injection: ø44 mm x 1|
|Clutch||Wet multi-disc with Brembo hydraulic operation|
|Frame||Tubular, semi-double cradle|
|Wheel travel - front||305 mm|
|Wheel travel - rear||307 mm|
|Tyre Size-front||80/100-21 (51M)|
|Tyre Size-rear||120/80-19 (63M)|
|Suspension - front||49 mm inverted telescopic spring fork with adjustable compression and rebound damping|
|Suspension - rear||New Uni-Trak with adjustable dual-range (high/low-speed) compression damping, adjustable rebound damping and adjustable preload|
|Brakes - front||Single 270 mm semi-floating petal disc with dual piston caliper (241mm effective dia)|
|Brakes - rear||Single 240 mm petal disc with single piston caliper (225 effective dia)|
|L x W x H||2,185 x 820 x 1,265 mm|
|Ground Clearance||340 mm|
|Seat height||955 m|
|Fuel capacity||6.2 litres|
|Curb Mass||110.2 kg (includes full fuel tank, all fluids at optimum levels)|
AIR FILTER CLEANER$32.95
AIR FILTER OIL$24.99
CALIBRATION BRACKET, HAND HELD$7.25
CHAIN LUBE SYNTHETIC$20.00
CLEANER WIPE DOWN$17.00
COVER-SIDE, LH GREEN$89.85
COVER-SIDE, RH, GREEN$89.85
Fender Front, Lime Green$84.44
FLUID BRAKE DOT 3&4$9.70
Folding MX Bike Stand and Mat$299.00
Guard, Engine, Lower$27.24
KX CALIBRATION CONTROLLER KIT$1,201.20
PREWASH – ON AND OFF ROAD$18.00
RADIATOR SHROUD, LEFT, LIME GREEN$88.56
RADIATOR SHROUD, RIGHT, LIME GREEN$91.97