$8,699 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.
NEW SHOWA SFF-AIR TAC
The Triple Air Chamber design of this championship-winning technology offers a lightweight construction, high rigidity, and low friction, resulting in a silky-smooth ride. This version of the fork also features Kawasaki-exclusive settings developed and tested over multiple AMA title seasons.
New 270mm Oversized Front BRAKING® Rotor
The new oversized petal-disc brake rotor offers increased stopping power for maximum control while cornering.
CHAMPIONSHIP POWER (ENGINE)
The new race-team-inspired bridged-box-bottom piston of the KX450F has a new crown design for increased compression and improved combustion efficiency. Translation: even more championship power.
ADJUSTABLE POWER MODES
(DFI® COUPLERS)
Every track surface is unique, so we make it easy to find the ideal fuel injection settings for the track with easily interchangeable DFI couplers. The black coupler provides smoother power, whereas the white coupler offers more aggressive throttle response. The green coupler offers a more balanced feel.
LAUNCH CONTROL MODE
When grabbing the holeshot means winning the race, reach for the KX450F’s industry-first Launch Control Mode. Developed by our race team for your success, this feature helps control the 450F’s massive power at the starting gate by altering ignition timing so your rear tire can hook up with the terrain.
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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 system
DFI® with 43mm Keihin throttle body
Transmission
5-speed
Frame type
Aluminum perimeter
Fuel capacity
1.64 gallons
Rear suspension / wheel travel
Uni-Trak® linkage system and Showa shock, 19-position low-speed and 4-turns high-speed compression damping, 22-position rebound damping and fully adjustable spring preload / 12.4"
Tire size, rear
120/80-19
Brakes, rear
Single 240mm Braking® petal disc with single-piston caliper
Overall width
32.3"
Ground clearance
13.4"
Curb weight**
247.1 lb
Color choices
Lime Green
Displacement
449cc
Compression ratio
12.8:1
Ignition
Digital DC-CDI
Final drive
Chain
Rake / trail
27.9 degrees / 4.7"
Front suspension / wheel travel
Inverted Showa SFF-Air TAC fork with Triple Air Chamber, DLC coated sliders, 22-position compression and 20-position rebound damping adjustment / 12.4"
Tire size, front
80/100-21
Brakes, front
Single semi-floating 270mm Braking® petal disc with dual-piston caliper
Overall length
86.4"
Overall height
50.2"
Seat height
37.8"
Wheelbase
58.8"
**Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied).

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