KX design philosophy is simple: put mid-level to expert riders on the top step of the podium – and that is what the KX450F does best. Engine and chassis performance delivers what riders need to win. And complimenting this dominant performance, the KX450F is loaded with advanced technology with industry firsts that give riders an even greater edge.
|Fuel system||Digital fuel injection with 43 mm Keihin throttle body|
|Valve system||DOHC, 4 valves|
|Lubrication||Forced lubrication (semi-dry sump)|
|Bore and stroke||96.0 x 62.1 mm|
|Rear: type||Single 240 mm petal disc|
|Front: calipers||Dual-piston caliper|
|Front: type||Single rigid mount 270 mm petal disc|
|Rear: calipers||Single-piston caliper|
|Overall height||1,275 mm (50.4 in.)|
|Fuel capacity||6.2 litres (1.59 gal.)|
|Overall width||820 mm (32.3 in.)|
|Curb mass**||112.1 kg (250 lbs.)|
|Overall length||2,195 mm|
|Seat height||955 mm (37.8 in.)|
|Ground clearance||340 mm|
|Gear ratio: 4th||1.000 (19/19)|
|Transmission||5-speed, constant mesh, return shift|
|Gear ratio: 3rd||1.188 (19/16)|
|Gear ratio: 2nd||1.412 (24/17)|
|Clutch||Wet multi-disc, manual|
|Gear ratio: 1st||1.750 (28/16)|
|Final reduction ratio||3.846 (50/13)|
|Primary reduction ratio||2.727 (60/22)|
|Gear ratio: 5th||0.875 (21/24)|
|Wheel travel: front||314 mm (12.4 in.)|
|Trail||113 mm (4.57 in.)|
|Wheel travel: rear||315 mm (12.4 in.)|
|Steering angle (left/right)||42°/42°|
|Suspension, rear||New Uni-Trak linkage system and Kayaba shock with 22-position low-speed and 2-turns or more high-speed compression damping, 22-position rebound damping and fully adjustable spring preload|
|Suspension, front||ø49 mm inverted telescopic Separate Function front Fork Air - Triple Air Chamber (SFF-Air TAC)|
4.9% Special Retail Financing
Motorcycle Sony Action Cam Promotion
Kawasaki Pit Tent Promotion
Keep cool in the shade between races. Purchase a select new KX or KLX and receive a free Kawasaki Pit Tent. Visit your local Kawasaki dealership to access this limited time offer.
OGIO Equipment Bag Promotion
Get to the race in style with a free OGIO Performance Equipment Bag. Purchase a new KX or KLX motorcycle and receive a free OGIO Performance Equipment Bag. Visit your local Kawasaki dealership to access this limited time offer.
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 Kawasaki's KX450F, 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 off the start, disengaging and returning to the standard engine map automatically once the rider shifts into 3rd gear. The system gives riders a great advantage when lining up at the gate and puts them in a better position to win.
Best kept secret
* The Manufacturer's Suggested Retail Price does not include freight, pre-delivery inspection or applicable taxes. The final price is at the discretion of the dealer. Prices and Specifications are subject to change without prior notice. The amount indicated as "Your price" may include an optional instant Mega Cash credit that is deducted from the manufacturer's suggested retail price before taxes. This promotion is time limited and certain conditions will apply. See your dealer for complete details. Offer not available on financed purchases and cannot be combined with any other special offers. The final price is at the discretion of the dealer. Prices and Specifications are subject to change without prior notice.
** Includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90% of capacity) and tool kit (if supplied)
‡ Power / Torque figures measured at the crankshaft.
The specifications mentioned here apply to and have been achieved by production models under standard operating conditions. We intend only to give a fair description of the vehicle and its performance capabilities but these specifications may not apply to every machine supplied for sale. Kawasaki Heavy Industries, Ltd. reserves the right to alter specifications without prior notice. Equipment illustrated and specifications may vary to meet individual markets. Available colours may vary by market.