First Look: 2008 Kawasaki KX250F

 Features and Benefits


– 249cc, liquid-cooled, four-stroke, four-valve, DOHC engine delivers hard-hitting power from mid- to high-rpm

– Features improvements in rigidity and reliability

– Wide powerband for excellent low-rpm torque and blistering over-rev

Top End

– Polished intake ports for an extremely-smooth surface that improves intake flow at every rpm

– Ultra-light thin-stem titanium valves feature thick skirts and extended guides for maximum durability

– New head gasket offers better sealing

– Special valve seat material helps prevent wear on the titanium valves

– K-TRIC digital microcomputer controlled ignition system with coil on plug “stick” ignition to save weight and improve performance

– Digital ignition tuned to maximize top-end and over-rev, includes a spark-controlled rev limiter for more precise control of maximum engine rpm

Bottom End

– New more-rigid crankcase around the crankshaft and on the left side, near the input and output shafts for increased reliability and more-efficient torque transfer

– New kickstart ratchet is 3.5mm thicker for better feel and reliability

– Crankshaft is surface-hardened for maximum rigidity

– Twin oil pumps ensure proper lubrication and oil scavenging for optimum performance

– Lightweight magnesium clutch, generator and cylinder head covers


– High-capacity Denso radiators are designed to offer superior cooling in a slim profile


– New 3mm higher shift lever with precise adjustability for maximum rider control


– All-aluminum perimeter frame features composite structure, utilizing forged, extruded and cast components

– 10mm wider engine mount spacers reduce torsional rigidity for quicker steering, improved rear wheel traction and better rider feel

– The slim profile of the frame, two-piece radiator shrouds that leave the upper frame spars exposed, and careful design of the remaining bodywork make the KX250F feel light and narrow beneath the rider

Front Suspension

– Showa twin-chamber fork keeps oil and air in separate chambers for stable damping performance during long motos

– Fork features .5mm thicker piston rods for smoother mid-stroke action

– New smaller air passages at the top of the fork cartridge provide more of an “air spring” effect during compression, for more consistent damping

Rear Suspension

– Showa shock with revised tuning

– Raised ride height provides quicker turning and improved bottoming resistance

– Fine rear shock damping adjuster needle allows precise suspension tuning

– Alloy swingarm uses cast front section, tapered hydroformed spars and forged chain pullers; the tapered spars are shaped to match the balance of flex and rigidity required of the aluminum frame

– Sprocket-style chain roller helps smooth engine braking by reducing drive lash


– Front and rear brakes utilize petal discs, helping to reduce overall weight

– Petal discs help to clean the brake pads for more efficient braking performance


– New factory-look black alumite coated rims

From the Cockpit

– Renthal aluminum handlebar is ultra-strong and reduces overall weight

– Short-length grips feature a special pattern to reduce vibration transmitted from the bars to the rider

– Particular attention was paid to the body work underneath the seat to improve the rider?s grip on the chassis when standing


– Bodywork, graphics and seat cover have aggressive style inspired by championship winning factory teams


– Different inertia magneto rotors

– 12-tooth countershaft sprocket

– Top handlebar clamp for an oversized bar

– Aluminum and steel rear sprockets with optional tooth sizes

– Solid petal brake rotors for wet racing conditions

– Optional springs for the front fork and rear shock

– Manual decompression lever and cable

– 20-inch front wheel



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: 13.5:1

Ignition: Multi-map 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 / 4.7 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 51M

Rear tire: 100/90-19 57M

Front brake: Single semi-floating 250mm petal disc with dual piston caliper

Rear brake: Single 240mm petal disc with single-piston caliper

Overall length: 85.0 in.

Overall width: 32.3 in.

Overall height: 50.0 in.

Wheelbase: 57.8 in.

Ground clearance: 13.2 in.

Seat height: 37.8 in.

Dry weight: 204 lbs.

Fuel capacity: 1.9 gal.

Color: Lime Green

MSRP: $6,099

Wholesale distributor: Kawasaki Motors Corp., U.S.A.

9950 Jeronimo Road

Irvine, California 92618

(949) 770-0400