The 2009 KX250F features a cylinder head with a new intake port design that’s smoother, freer flowing, better sealed and utilizes new stronger titanium valves with a longer service life. New factory-level crankshaft balance and a tapered titanium exhaust pipe add up to smoother and more impressive power delivery from the 249cc, liquid-cooled, four-stroke engine.
A revised crank web significantly increases the crankshaft balance factor to a level on par with Kawasaki’s factory racers. The end result is reduced engine vibration, smoother power delivery and a noticeable improvement in low rpm throttle response. From the first crack of the throttle, to wide-open at the rev limiter; this new engine generates controllable, class-leading performance.
The KX250F’s engine cooling capacity was increased via a new water jacket routing for more effective flow and larger radiators with new louvers for enhanced thermal efficiency. Increased from three to four blades, the new louvers are smaller with a shallower angle to flow more air.
Engine oil volume was lowered to 1.3L to reduce weight and mechanical loss while a new KX450F type crankcase scavenge pump oil filter was added for easier maintenance. The transmission durability was boosted with a bigger interval between the gear shafts that allows the use of stronger gears, and there are new, stronger clutch and generator covers2009 Kawasaki KX250F Monster Energy - USA Specifications
Engine: Four-stroke single with DOHC and four valves
Displacement: 249cc
Bore x stroke: 77.0 x 53.6mm
Cooling: Liquid
Carburetion: Keihin FCR37 and hot start circuit
Compression ratio: 13.2:1
Ignition: Digital CDI with K-TRIC throttle position sensor
Transmission: Five-speed with wet multi-disc manual clutch
Final drive: Chain
Frame: Aluminum perimeter
Rake / trail: 27.7 degrees / 4.8 in.
Front suspension / wheel travel: 47mm inverted Showa twin-chamber telescopic fork with 16-way compression and rebound damping / 12.4 in.
Rear suspension / wheel travel: UNI-TRAK® linkage system and Showa shock with 13-way low-speed and stepless high-speed compression damping, 17-way rebound damping and fully adjustable spring preload / 12.2 in.
Front tire: 80/100-21
Rear tire: 100/90-19
Front brake: Single semi-floating 250mm petal disc with dual piston caliper
Rear brake: Single 240mm petal disc with single-piston caliper
Overall length: 85.4 in.
Overall width: 32.3 in.
Overall height: 50.0 in.
Wheelbase: 57.9 in.
Ground clearance: 13.4 in.
Seat height: 37.6 in.
Curb weight: 229.9 lbs.
Fuel capacity: 2.1 gal.
Color: Ebony
MSRP: $6,699
A revised crank web significantly increases the crankshaft balance factor to a level on par with Kawasaki’s factory racers. The end result is reduced engine vibration, smoother power delivery and a noticeable improvement in low rpm throttle response. From the first crack of the throttle, to wide-open at the rev limiter; this new engine generates controllable, class-leading performance.
The KX250F’s engine cooling capacity was increased via a new water jacket routing for more effective flow and larger radiators with new louvers for enhanced thermal efficiency. Increased from three to four blades, the new louvers are smaller with a shallower angle to flow more air.
Engine oil volume was lowered to 1.3L to reduce weight and mechanical loss while a new KX450F type crankcase scavenge pump oil filter was added for easier maintenance. The transmission durability was boosted with a bigger interval between the gear shafts that allows the use of stronger gears, and there are new, stronger clutch and generator covers2009 Kawasaki KX250F Monster Energy - USA Specifications
Engine: Four-stroke single with DOHC and four valves
Displacement: 249cc
Bore x stroke: 77.0 x 53.6mm
Cooling: Liquid
Carburetion: Keihin FCR37 and hot start circuit
Compression ratio: 13.2:1
Ignition: Digital CDI with K-TRIC throttle position sensor
Transmission: Five-speed with wet multi-disc manual clutch
Final drive: Chain
Frame: Aluminum perimeter
Rake / trail: 27.7 degrees / 4.8 in.
Front suspension / wheel travel: 47mm inverted Showa twin-chamber telescopic fork with 16-way compression and rebound damping / 12.4 in.
Rear suspension / wheel travel: UNI-TRAK® linkage system and Showa shock with 13-way low-speed and stepless high-speed compression damping, 17-way rebound damping and fully adjustable spring preload / 12.2 in.
Front tire: 80/100-21
Rear tire: 100/90-19
Front brake: Single semi-floating 250mm petal disc with dual piston caliper
Rear brake: Single 240mm petal disc with single-piston caliper
Overall length: 85.4 in.
Overall width: 32.3 in.
Overall height: 50.0 in.
Wheelbase: 57.9 in.
Ground clearance: 13.4 in.
Seat height: 37.6 in.
Curb weight: 229.9 lbs.
Fuel capacity: 2.1 gal.
Color: Ebony
MSRP: $6,699
