TBA MSRP
We've engineered the best for riders that demand the best. The KX450F is championship proven and the proof is in the details.
The new KX450F is engineered to win. This championship proven monster has been enhanced with an arsenal of innovative features, and is equipped to tear up the track, straight from the factory.
PNEUMATIC SPRING FORK (PSF)
The PSF uses air instead of a metal coil spring to create less friction and to decrease the bike’s overall weight. It helps the bike react better with the track and gets stiffer with more compression for a sportier feel. Fully adjustable with an air pump included standard with the KX™450F motorcycle.
ADJUSTABLE ERGONOMICS (HANDLEBARS & FOOT PEGS)
Handlebars can be adjusted back and forth over a 35mm range for a custom fit. Adjustable foot pegs complete the package for obtaining an optimal riding position to best fit the rider.
CHAMPIONSHIP POWER (ENGINE)
Kawasaki's legendary 449cc KX™ engine has been carefully refined over the years to boast impressive low-end torque and smooth power delivery through the RPMs. Proven countless times at a championship level, it’s an engine that’s built for one thing and one thing only: to win races.
ADJUSTABLE POWER MODES (DFI® COUPLERS)
Included standard with the KX™450F are three plug-and-play clips that change the engine mapping and optimizes it based on track/weather conditions or simply personal preferences. It takes only seconds to switch between a balanced feel, smoother power delivery, and sharper throttle response.
LAUNCH CONTROL
Activate Launch Control Mode to optimize acceleration and to help prevent wheelspin off the line especially over hard surfaces. As you nail the holeshot, Launch Control Mode will automatically deactivate itself when you shift into 3rd gear.
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Engine
Liquid-cooled, four-stroke single with DOHC and four-valve cylinder head
Bore x stroke
96.0 x 62.1mm
Fuel Injection
DFI® with 43mm Keihin throttle body
Transmission
Five-speed
Front suspension / wheel travel
48mm inverted, Kayaba PSF with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.
Front tire size
80/100-21
Front brake
Single rigid-mount 250mm petal disc with dual-piston caliper
Overall length
85.8 in.
Overall height
50.2 in.
Ground clearance
13.0 in
Curb weight
248.0 lbs.
Color
Lime Green
Displacement
449cc
Compression ratio
12.5:1
Ignition
Digital DC-CDI
Rake / trail
26.9 degrees / 4.4 in.
Rear suspension / wheel travel
UNI-TRAK® linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload / 12.4 in.
Rear tire size
120/80-19
Rear brake
Single 240mm petal disc with single-piston caliper
Overall width
32.3 in.
Wheelbase
58.3 in.
Seat height
37.6 in.
Fuel capacity
1.64 gal.

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