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Introduction
Nimble handling, an exceptional personality and a low price tag highlight Kawasakis Ninja® 250R sportbike, while its UNI-TRAK® rear suspension, petal disc brakes and gas-sipping twin-cylinder engine contribute to its class leading performance and value. Its no surprise the Ninja 250R is such a strong seller.Engine TypeFour-stroke, liquid-cooled, DOHC, parallel twinDisplacement249 ccBore & Stroke62.0 x 41.2mmMaximum Torque22 Nm (2.24 kgf/m) 16.2 lb-ft/9,500 rpmCompression Ratio11.6:1CarburetorKeihin CVK30 x 2IgnitionDigitalTransmission6-SpeedFinal DriveO-Ring ChainCoolingLiquidFrameSemi-double cradle, high-tensile steelRake/Trail26 degrees / 3.2 in.Front Tire Size110/70-17Rear Tire Size130/70-17Wheelbase55.1 in.Front Suspension / wheel travel37mm hydraulic telescopic fork / 4.7 in.Rear Suspension / wheel travelBottom-Link Uni-Trak? with 5-way adjustable class="table table-borderless" preload / 5.1 in.Front Brake TypeSingle 290mm hydraulic disc with two-piston caliperRear BrakeSingle 220mm petal disc with two-piston caliperFuel Tank Capacity4.8 gal.Seat Height30.5 in.Curb Weight374 lbs.Overall length82.1 in.Overall width28.1 in.Overall height43.7 in.Exhaust system- 2-into-1 system contributes to the Ninja 250R’s low and mid-range torque and smooth, step-free power curve
- Slightly upswept silencer extensively tested to determine chamber size, connecting pipe length and diameter to achieve least noise and most power
- Meets strict emissions with dual catalyzers; one in the collector pipe and the other in the silencer
- Using two catalyzers minimizes the power loss
- Positioning the first catalyzer as close to the exhaust ports maximizes its efficiency as well
Cylinder head- Intake and exhaust ports contribute to good off-idle response and smooth power delivery Valve timing and lift designed for strong low
- and mid-range torque
- Direct valve actuation helps ensure reliable high-rpm operability
- Thin heads and stems on valves for reduced reciprocating weight
DOHC 249cc Parallel Twin-cylinder Engine- Compact parallel-twin design offers good mass centralization for superior handling
- Tuned to deliver smooth, step-free power with an emphasis on low and mid-range power for rider-friendly response
- Pistons feature reinforced heads and strengthening in the pin boss area for increased durability
- Thick piston (longitudinally) rings help prevent oil consumption
- Combustion chamber design optimized to maximize combustion efficiency and reduce emissions
- Ample highrpm performance will please riders using the full range of the engine
Carburetor- Fine-tuned twin Keihin CVK30 carburetors offer good power feel and low fuel consumption
Reduced mechanical noiseorced heads and strengthening in the pin boss area for increased durability- Prevents loose cam chain and reduces power-robbing friction loss
- Eliminating mechanical noise allows the use of a freer flowing exhaust for a better performance
- Complex construction with reinforcing ribs helps eliminate airbox reverberation and reduce intake noise
- Air filter accessible from the side, for easy replacement
Liquid Cooling- Latest generation Denso radiator offers superior cooling with minimal space and weight
- Ring-fan uses a quiet-running motor that also saves space
- Fins on the lower side of the crankcase further helps cool the engine
Six-speed Transmission / Clutch- Involute splines reduce friction and backlash between gears and shafts for easier gear meshing and smooth shifting under power
- Spring-type clutch damper reduces jerkiness at very low speeds and minimizes shocks when rolling on and off the throttle for a smoother clutch feel
- Paper-base friction plates help increase clutch durability
Chassis- Sturdy and durable diamond-style frame of thick-walled steel tubing offers confidence-inspiring stability at both high and low speeds
- Beefy swingarm bracket contributes to the frame’s rigidity and helps achieve an ideal chassis stiffness balance
- Square-tube swingarm with a 60 x 30mm cross-section further adds to rigidity
Suspension- 37mm telescopic front fork with firm settings contribute to the Ninja 250R’s smooth, stable class="table table-borderless" handling and enhanced ride control
- UNI-TRAK® rear suspension compliments the rigid frame and provides great road holding ability
- Rear shock features 5-way adjustable class="table table-borderless" preload, enabling ride height to be maintained whether riding solo or with a passenger
Wheels- Features 17” wheels like its larger supersport brothers
- Low-profile sportbike tires on wide rims contribute to its easy, neutral handling at low speeds
Brakes- Large-diameter, 290mm front petal disc and a balanced action two-piston caliper offers excellent braking performance and a natural, direct feeling at the lever
- Two-piston caliper grips the rear 220mm petal disc
Ergonomics- Natural riding position with slightly forward-slanting seat and wide, raised handlebars
Instrumentation- Instrument panel features an easy-to-read, large-face analog speedometer along with an analog tachometer, odometer, trip meter, fuel gauge and warning lights
Bodywork- Styling, fit and finish of striking full-fairing bodywork match its Ninja supersport siblings
- Aggressive dual-lamp headlight design, slim tail cowl and separate seats further enhance the supersport look
- Front cowling and windscreen offer the rider a substantial amount of wind protection
- Two helmet holders conveniently located under the rear seat
- Under-seat storage can hold a U-lock or similar device
- Two hooks under the tail and the rear passenger pegs provide anchor points for securing items to the rear of the bike