2010 Kawasaki Ninja® 250R

Ninja® 250R

Rolling proof that less really can be more. The Ninja® 250R has always been a great place for beginning riders to get started, but modern sportbike technology means the littlest Ninja is a great choice for more experienced riders as well — especially ones experienced at getting the most for their motorcycle dollar. While its twin-cylinder engine might be small, light and compact, its eight-valve head packs maximum power into every rpm. The 250R screams Ninja performance, from its sleek full fairing and 17-inch wheels, to its Uni-Trak® rear suspension and triple petal-disc brakes.

6-speed Transmission / Clutch

  • 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
  • Involute splines reduce friction and backlash between gears and shafts for easier gear meshing and smooth shifting under power


  • 2 hooks under the tail and the rear passenger pegs provide anchor points for securing items to the rear of the bike
  • Styling, fit and finish of striking full-fairing bodywork match its Ninja supersport siblings
  • Front cowling and windscreen offer the rider a substantial amount of wind protection
  • Aggressive dual-lamp headlight design, slim tail cowl and separate seats further enhance the supersport look
  • 2 helmet holders conveniently located under the rear seat
  • Under-seat storage can hold a U-lock or similar device


  • Large-diameter, 290 mm front petal disc and a balanced action 2-piston caliper offer excellent braking performance and a natural, direct feeling at the lever
  • 2-piston caliper grips the rear 220 mm petal disc


  • Fine-tuned twin Keihin CVK30 carburetors offer good power feel and low fuel consumption


  • Sturdy and durable diamond-style frame of thick-walled steel tubing offers confidence-inspiring stability at both high and low speeds
  • Square-tube swingarm with a 60 x 30 mm cross-section further adds to rigidity
  • Beefy swingarm bracket contributes to the frame’s rigidity and helps achieve an ideal chassis stiffness balance

Cylinder Head

  • Thin heads and stems on valves for reduced reciprocating weight
  • Valve timing and lift designed for strong low and mid-range torque
  • Direct valve actuation helps ensure reliable high-rpm operability
  • Intake and exhaust ports contribute to good off-idle response and smooth power delivery

DOHC, 249 cc, Parallel Twin-cylinder Engine

  • Pistons feature reinforced heads and strengthening in the pin boss area for increased durability
  • Thick piston (longitudinally) rings help prevent oil consumption
  • 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
  • Ample high-rpm performance will please riders using the full range of the engine
  • Combustion chamber design optimized to maximize combustion efficiency and reduce emissions


  • Natural riding position with slightly forward-slanting seat and wide, raised handlebars

Exhaust System

  • 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; 1 in the collector pipe and the other in the silencer
  • 2-into-1 system contributes to the Ninja 250R’s low and mid-range torque and smooth, step-free power curve
  • Using 2 catalyzers minimizes the power loss
  • Positioning the first catalyzer as close to the exhaust ports maximizes its efficiency as well


  • Instrument panel features an easy-to-read, large-face analog speedometer along with an analog tachometer, odometer, trip meter, fuel gauge and warning lights

Liquid Cooling

  • Latest generation Denso radiator offers superior cooling with minimal space and weight
  • Fins on the lower side of the crankcase further helps cool the engine
  • Ring-fan uses a quiet-running motor that also saves space

Reduced Mechanical Noise

  • Automatic adjusting cam chain tensioner eliminates mechanical noise caused by a loose cam chain and reduces power-robbing friction loss
  • Air filter accessible from the side, for easy replacement
  • 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


  • Rear shock features 5-way adjustable preload, enabling ride height to be maintained whether riding solo or with a passenger
  • 37 mm 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


  • Features 17 in. wheels like its larger supersport brothers
  • Low-profile sportbike tires on wide rims contribute to its easy, neutral handling at low speeds

General Information

Manufacturer Kawasaki
Model Year 2010
Model Ninja® 250R
Model Code EX250JAF
Stock Number K60059
Color Metallic Island Blue


Brakes Front: (1) 290 mm hydraulic disc with 2-piston caliper
Rear: (1) 220 mm petal disc with 2-piston caliper
Tires Front: 110/70-17
Rear: 130/70-17


Length 82.1 in.
Height 43.7 in.
Width 28.1 in.
Weight Curb: 374.9 lbs.
Wheelbase 55.1 in.
Seat Height 30.5 in.


Transmission 6-speed
Final Drive O-ring chain


Engine 4-stroke, DOHC, parallel twin
Displacement 249 cc
Bore x Stroke 62 x 41.2 mm
Compression Ratio 11.6:1
Carburetion (2) Keihin CVK30
Ignition Digital
Cooling Liquid


Frame Semi-double cradle, high-tensile steel
Suspension Front: 37 mm hydraulic telescopic fork; 4.7 in. travel
Rear: Bottom-link Uni-Trak® with 5-way adjustable preload; 5.1 in. travel
Rake 26°
Trail 3.2 in.