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Need help?Do you have a question about the Kawasaki KLX250SF - DATASHEET 2010 and is the answer not in the manual?
Highlights the 250cc, DOHC, liquid-cooled engine, a core component of the KLX250SF.
Focuses on the integrated digital instrument panel for rider information.
Details the advanced petal disc brake system for enhanced stopping power.
Describes the engine's flat top piston and pentroof combustion chamber for efficiency.
Explains the electric starter system and KACR for easy ignition.
Details the 4-valve head design for optimal valve area and low-end torque.
Highlights the cylinder's hard coating for superior heat transfer and durability.
Focuses on the CVK carburetor for precise fuel metering and quick throttle response.
Explains the digital CDI for precise timing control under all conditions.
Details the six-speed transmission ratios optimized for road performance.
Describes the frame's construction and its contribution to handling and rigidity.
Highlights the inverted forks with adjustable damping for enhanced road riding.
Details the Uni-Trak rear suspension with adjustable damping for optimal performance.
Focuses on the large front disc brake and twin piston caliper for stopping power.
Covers supermotard-specific features like the digital meter and wheel rims.
Describes the aggressive styling elements contributing to the supermoto look.
The Kawasaki KLX250SF is a supermoto motorcycle designed for on-road performance, blending the agility of a dual-sport bike with street-focused features. It's positioned as an entry-level machine that offers significant fun and performance, particularly in cornering, despite its 250cc engine. The design emphasizes a lightweight build and responsive handling, making it an engaging ride for both new and experienced riders.
The KLX250SF functions as a versatile street motorcycle, specifically tailored for supermoto-style riding. Its core purpose is to provide an exhilarating on-road experience, characterized by sharp handling, quick acceleration, and effective braking. The motorcycle is built upon the foundation of Kawasaki's KLX250S dual-sport, but with modifications that optimize it for paved surfaces. This includes sticky street radial tires, a lower seat height, and a robust front brake system. The 249cc liquid-cooled, DOHC, 4-valve, single-cylinder engine is engineered for consistent power delivery across the RPM range, ensuring smooth operation from idle to redline. The engine's design, featuring a flat-top piston with a pentroof combustion chamber and a high compression ratio, contributes to its responsive performance. The 6-speed transmission is specifically geared for road performance, allowing riders to efficiently manage power output for various street conditions. The digital CDI ignition system precisely controls timing, ensuring reliable starts and consistent engine performance regardless of RPM changes. The motorcycle's chassis, a high-tensile steel perimeter frame, is designed to provide excellent rigidity for straight-line stability and precise handling during quick changes of direction. The suspension system, with its inverted cartridge forks and Uni-Trak rear suspension, is tuned for road use, offering adjustable damping to adapt to different riding conditions and rider preferences. The braking system, featuring a massive semi-floating front petal disc with a twin-piston caliper and a rear petal disc with a single-piston caliper, provides strong and reliable stopping power, crucial for aggressive street riding.
The KLX250SF offers a range of features that enhance its usability and riding experience. The "big fun in a small package" ethos is evident in its agile handling and responsive nature. The 17-inch wheels, shod with sticky street radial tires, provide exceptional grip and confidence in corners, allowing riders to exploit the bike's abundant cornering clearance. The lower 860 mm seat height makes it more accessible for a wider range of riders, particularly novices, while still offering enough room for skilled pilots to lean into turns. The lightweight curb mass of 137.0 kg contributes significantly to its nimble feel and ease of maneuverability, making it feel more powerful than its displacement might suggest.
The engine's design prioritizes smooth operation and consistent power. The gear-driven engine balancer minimizes vibration, enhancing rider comfort during longer rides and reducing fatigue. The electric starter, combined with the Kawasaki Automatic Compression Release (KACR), ensures easy and reliable starting, a practical feature for daily use. The 4-valve cylinder head and efficient port design boost low-end torque, providing strong pull from a standstill and through city traffic. The 34mm semi-flat slide CVK carburetor precisely meters fuel, contributing to good fuel economy and quick throttle response, which is vital for dynamic street riding.
The motorcycle's instrumentation includes a new blue-backlit LCD digital instrument panel, which is easy to read and provides essential information such as speedometer, tachometer, tripmeter, and water temperature warning light, along with various indicator lights. This modern display enhances the rider's awareness and control. The narrow fuel tank design contributes to a comfortable riding position, and its lockable, hinged one-touch cap adds convenience. KX-style chain adjusters simplify quick wheel changes and chain adjustments, a practical feature for maintenance or customization. The color-coded blue rims and black wheel hubs contribute to the bike's aggressive and custom supermoto appearance, making it visually appealing. The front cowl, sharp designed rear tail light, and two-piece rear fender enhance both aesthetics and rear visibility, with the latter also simplifying removal for maintenance. Road-type mirrors round out the equipment, ensuring compliance and safety for street use.
The KLX250SF incorporates several design elements that facilitate maintenance and contribute to its longevity. The electrofusion cylinder, with its incredibly hard coating in the aluminum bore, offers superior heat transfer, resists abrasion and seizure, and holds lubrication well. This design allows for tight piston-to-cylinder clearances, which not only contributes to more horsepower but also reduces wear and tear, potentially extending engine life and reducing the frequency of major engine overhauls.
The O-ring drive chain is a significant maintenance feature. The O-rings seal out dirt and water, keeping lubrication in and extending the chain's lifespan. This reduces the need for frequent cleaning and lubrication, making routine chain maintenance less arduous. Paired with steel sprockets, this drive system is designed for durability and a long service life.
The Uni-Trak rear suspension and inverted cartridge forks feature adjustable damping (20-way for compression and rebound on the rear, 16-way compression on the front). These adjustments not only allow riders to fine-tune the ride for different road conditions but also simplify suspension tuning, which can be a form of preventative maintenance by ensuring components operate within optimal parameters. The accessibility of these adjustments means riders can maintain proper suspension performance without specialized tools or extensive mechanical knowledge.
The two-piece rear fender design simplifies removal, which can be beneficial for accessing the rear wheel or other components for cleaning or service. The overall robust construction, from the high-tensile steel frame to the durable engine components, suggests a motorcycle built to withstand the rigors of regular use, implying less frequent need for major repairs if properly maintained. The availability of Authentic Kawasaki Accessories also means that replacement parts and customization options are readily available, supporting long-term ownership and maintenance.
General| Displacement | 249 cc |
|---|---|
| Bore x Stroke | 72.0 x 61.2 mm |
| Compression Ratio | 11.0:1 |
| Transmission | 6-speed |
| Final Drive | Chain |
| Rear Brake | Single 240 mm petal disc with single-piston caliper |
| Front Tire | 110/70-17 |
| Rear Tire | 130/70-17 |
| Fuel System | Keihin CVK34 |
| Front Suspension | 43 mm inverted fork with adjustable compression damping |
| Rear Suspension | Uni-Trak® with adjustable preload, compression and rebound damping |
| Front Brake | Single 250 mm petal disc with dual-piston caliper |
| Wheelbase | 56.3 in |
| Fuel Capacity | 2.0 gal |
| Curb Weight | 302.1 lbs |
| Engine Type | 4-stroke, single cylinder, DOHC |
| Seat Height | 35.0 in (890 mm) |
