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The Kawasaki KX 450F offers a high-quality sports bike that you can take with you wherever you want to go.

For the 2013 model, the bike is complemented with four different handlebar positions and two footpeg positions. For the frame, the KX 450F offers a total width reduction of 4mm across the main frame spars, giving it the most slender mid-section ever. Furthermore, this vehicle make use of Uni-Trak rear suspension linkage that is now slimmer than ever before. Along with the Kayaba rear shock and Kayaba Air-Oil-Separate forks up front, the AOS system controls oil and air in separate chambers for stable damping performance.

As for the engine, the KX 450F features virtually unlimited ignition mapping capabilities due to its enhanced Digital Fuel Injection (DFI) system. The bike’s high power capabilities and the wider power band comes as the result of many engine refreshments while the five-speed transmission is also overhauled for improved shifting.

In terms of styling, the bike will definitely catch your attention, thanks to its slim frame and the blue alumite finish on the oil cap that matches with the blue finish on the suspension adjusters and splashes of color in the new graphics.

Find out more about the Kawasaki KX450F after the jump.

  • 2013 Kawasaki KX 450F
  • Year:
  • Make:
  • Model:
  • Transmission:
    5-speed, return
  • Energy:
    Fuel injection: ø43 mm x 1 (Keihin)
  • Displacement:
    449 L
  • Price:

Kawasaki KX 450F

2013 Kawasaki KX 450F High Resolution Exterior
- image 463441

From controlled race launches to plug-and-play tuning, the slimmer, ultra powerful KX450F is first to feature a Pneumatic Spring Fork. Built to Finish First – just ask Ryan Villopoto.

New Uni-Trak rear suspension

Linkage mounts below the swingarm for more precise suspension tuning. Dual compression adjustability offers a wide range of tuning options. Kashima coat on the tank cylinder improves action, additionally for MY13 revised damping settings match the new front fork.

Pneumatic Spring Fork (PSF)

The KX450F is the first mass-production motocrosser to features this next-generation fork technology. Shock absorption duties are carried out using pressurized air instead of springs. Reduced weight, easier adjustability and wider setting range are some of the advantages.

Factory Styling

2013 Kawasaki KX 450F High Resolution Exterior
- image 463440

Complementing the new front fender design and white rear fender, factory-style graphic, black alumite’ rims, black fork guards, blue alumite’ finish on the suspension adjusters, and a blue finish on some of the engine trim give the KX450F the looks to match its highly tuned performance.

Factory-inspired engine tuning

Revised high performance piston (0.2mm lower crown featuring sloped edges), intake cams and ECU settings resul in an increased performance in ultra-low to mid range torque.

Petal brake discs

The KX450F features petal brake discs front and rear. In addition to helping reduce unsprung weight, the wave shapes of the petal discs help clean the brake pads for more efficient braking performance.

Slim racer-friendly rider interface

The KX450F’s slim aluminum perimeter frame is a lightweight construction composed of forged, extruded and cast parts. Chassis balance and settings were all set to suit race-experienced riders. Designed with rider ergonomics in mind, offers a slim rider interface and racer-friendly ergonomics. New handle grips enable a more compact riding position.

Race oriented suspension

A super-hard Diamond-Like Carbon reduces sliding friction (and stiction). The coating is even effective when exposed to lateral forces that would hamper slide action. The surface hardness minimises scratches and damage to the tubes.

Precision engine tuning: KX FI Calibration Kit (option)

2013 Kawasaki KX 450F High Resolution Exterior
- image 463449

The KX FI Calibration Kit enables expert riders to adjust engine characteristics (by rewriting actual data maps) to suit their preference, record riding data, and analyse their riding data to further fine-tune their settings.

Hard-hitting fuel-injected power

Fuel-injected 449 cm³ liquid-cooled, 4-stroke Single delivers hard-hitting power from low- through high-rpm. The broad powerband and responsive throttle offer a broad spread of torquey response that enables racers to get on the gas and go even from down low.

Adjustable footpeg position

Adjustable footpeg brackets enable riders to lower their footpeg position 5 mm. In the lower position, CofG is lowered as is the rider’s point of view, adding to both physical and psychological stability.

Easy engine tuning: DFI Setting Data Selection (3 map choices)

2013 Kawasaki KX 450F High Resolution Exterior
- image 463448

Using provided DFI couplers, riders are able to easily switch to suit riding conditions. Plugging in each of the 4-pin couplers activates the corresponding engine map. Each of the three maps can be reprogrammed using the optional KX FI Calibration Kit.

The holeshot advantage: Launch Control Mode

The 2013 KX450F features a launch control system similar to that on our factory racers. With the simple press of a button, riders can activate a separate engine map designed to ensure efficient race starts in slippery conditions.

Adjustable handlebar position

Upper triple clamp with two sets of handle mount slots and reversible handle mounts offer riders a choice of four handle positions to choose from: 25 mm FWD, 15 mm FWD, STD and 10 mm BK.


2013 Kawasaki KX 450F High Resolution Exterior
- image 463443
Fuel system Fuel injection: ø43 mm x 1 (Keihin)
Ignition Digital DC-CDI
Starting Primary kick
Lubrication Forced lubrication, semi-dry sump
Engine type Liquid-cooled, 4-stroke Single
Displacement 449 cm³
Bore x stroke 96.0 x 62.1 mm
Compression ratio 12.5:1
Valve/Induction system DOHC, 4 valves
Clutch Wet multi-disc, manual
Primary reduction ratio 2.727 (60/22)
Gear ratios: 1st 1.750 (28/16)
Gear ratios: 2nd 1.412 (24/17)
Gear ratios: 3rd 1.188 (19/16)
Gear ratios: 4th 1.000 (19/19)
Gear ratios: 5th 0.875 (21/24)
Final reduction ratio 3.846 (50/13)
Transmission 5-speed, return
Final Drive Chain
Frame type Perimeter, aluminium
Rake/Trail 26.9° / 113 mm
Wheel travel, front 314 mm
Wheel travel, rear 315 mm
Tyre, front 80/100-21 51M
Tyre, rear 120/80-19 63M
Steering angle, left / right 42° / 42°
Suspension, front Type: 48 mm upside-down AOS-type Pneumatic Spring Fork (PSF) Compression damping: 22-way Rebound damping: 20-way
Suspension, rear Type: New Uni-Trak Compression damping: 22-way (low-speed), 2-turns or more (high-speed) Rebound damping: 33-way Spring preload: Fully adjustable
Brakes, front Type: Single rigid-mounted 250 mm petal disc Caliper: Dual-piston
Brakes, rear Type: Single 240 mm petal disc Caliper: Single-piston
Dimensions (L x W x H) 2,180 mm x 820 mm x 1,275 mm
Ground Clearance 330 mm
Wheelbase 1,480 mm
Seat height 955 mm
Fuel capacity 6,2 litres
Curb Mass 112,5 kg


2013 Kawasaki KX 450F High Resolution Exterior
- image 463442

Totalmotorcycle ---- "The KX450F’s best-in-class performance is delivered through the highest level of rider adjustability and the most progressive electronics package ever seen on a production motocross bike."

Ultimatemotorcycling ---- "In the past two years, Ryan Villopoto has more than proven the worthiness of Kawasaki’s KX450F."

Dirtrider ---- "On the track, the KX450F definitely has a race-inspired motor. The bike snaps extremely hard off-idle, so much so that it can cause you to blow out of your line if you’re not careful."

Motocross ---- "The 2012 KX450F is still a powerhouse in the motor department, yet Kawasaki set out to make it better. "

Kirby Garlitos
Kirby Garlitos
Automotive Aftermarket Expert -
Kirby’s first exposure into the world of automobiles happened when he caught Knight Rider on television as a five-year old boy. David Hasselhoff didn’t leave much of an impression on him (that happened later on in Baywatch), but KITT certainly did. To this day, Kirby remains convinced that he will one day own a car with the same ‘spirit’ as the original KITT (not the 2008 monstrosity). He doesn't know when that will be, but until then, he’s committed to expressing his love for KITT, and all cars for that matter, here at TopSpeed.  Read full bio
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