Engine: Liquid-cooled, four-stroke single with DOHC and four valves
Bore x stroke: 96.0 x 62.1mm
Compression ratio: 12.0:1
Fuel Injection: 43mm Keihin Throttle body
Ignition: Digital DC-CDI
Rake / trail: 26.7 degrees / 4.6 in.
Chassis and Dimensions
2009 Kawasaki KX450F
Front suspension / wheel travel: 48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.
Rear suspension / wheel travel: UNI-TRAK® linkage system and Kayaba shock with 22-position low-speed and stepless high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in.
Front tire: 90/100-21
Rear tire: 120/80-19
Front brake: Single semi-floating 250mm petal disc with dual piston caliper
Rear brake: Single 240mm petal disc with single-piston caliper