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 high-rpm performance will please riders using the full range of the engine
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
Fuel Injection
Fine-tuned fuel injection offers good power feel and low fuel consumption
Reduced mechanical noise
Automatic adjusting cam chain tensioner eliminates mechanical noise caused by a 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 reduces intake noise
Air filter accessible from the side, for easy replacement
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
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 handling and enhanced ride control
UNI-TRAK® rear suspension complements the rigid frame and provides great road holding ability
Rear shock features 5-way adjustable 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 offer 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
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
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
