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KX450F
449cc4-stroke1 cylLiquid-cooledElectric start
About the KX450F
Kawasaki's 450cc four-stroke motocross racer, sold as the KX450F through 2018 and again from 2027. Built for experienced and professional motocross riders.
- Family
- KX450/KX450F
- Model years
- 2006 – present
- Also known as
- KX450
Generations
2027 – present
KX450FCurrentThe F suffix returns on an electric-start bike with a new frame and swingarm (longer wheelbase), revised intake and exhaust, and Brembo brakes front and rear.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Electric start
- Gearbox
- 5-speed
- Fuel
- Fuel injection
2024 – 2026
KX450All-new frame and engine layout with a center-port exhaust, Brembo front brake, and handlebar map and traction control switches with the Rideology app.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Electric start
- Gearbox
- 5-speed
- Fuel
- Fuel injection
2019 – 2023
KX450All-new bike with electric start and no kick starter; the F was dropped from the name.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Electric start
- Gearbox
- 5-speed
- Fuel
- Fuel injection
2016 – 2018
KX450FRedesign with engine, chassis and throttle-body changes.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Kick start
- Gearbox
- 5-speed
- Fuel
- Fuel injection
2012 – 2015
KX450FNew frame, significant engine changes and launch control.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Kick start
- Gearbox
- 5-speed
- Fuel
- Fuel injection
2009 – 2011
KX450FSecond generation, with fuel injection from 2009.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Kick start
- Gearbox
- 5-speed
- Fuel
- Fuel injection
2006 – 2008
KX450FFirst KX450F; the planned 2005 debut slipped to 2006 after a frame failure, and 2007 replaced the 4-speed gearbox with a 5-speed.
- Engine
- 449cc
- Cooling
- Liquid-cooled
- Starter
- Kick start
- Fuel
- Carburettor
Year specs
- Engine
- 449 cc
- Bore × stroke
- 96 × 62.1 mm
- Cooling
- Liquid-cooled
- Starter
- Electric start
- Gearbox
- 5-speed
- Fuel system
- Fuel injection
- Horsepower
- —
- Torque
- —
- Dry weight
- —
- Wet weight
- —
- Seat height
- —
- Ground clearance
- —
- Wheelbase
- —
- Fuel capacity
- 6.2 L
- MSRP
- $10,299
engine_cc computed from the cited bore x stroke. Kawasaki Europe lists a 6.2 L tank; motorcycle.com lists 1.92 gal (7.3 L) for the US model. Weights, seat height, wheelbase and ground clearance not yet published for 2027 (new frame, longer wheelbase).
Gallery
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