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Kawasaki Ninja 250R (EX250) Specifications
The smallest of Kawasaki's sportbikes is the Ninja 250R. It delivers big performance and loads of styling all wrapped up in an attractively priced package.
The 250R is powered by a liquid-cooled, in-line twin-cylinder four-stroke engine with dual overhead cams and four valves per cylinder. This unintimidating yet high-output engine delivers smooth, predictable power that's perfect for the sport's new initiates. And at this time, more seasoned riders will still find the Ninja 250R an exciting experience, thanks to its 14,000-rpm redline and six-speed transmission.
What makes this Ninja motorcycle a real joy for riders of all skill levels, however, is its lightweight and compact design. It has a low seat height for confidence at stops, as well as conveniences such as electric starting and a Kawasaki Uni_Trak progressive rear suspension system. The latter is similar to that found on the larger-displacement Ninja models.
Fit and finish are up to classic Ninja motorcycle snuff, complete with an aerodynamic fairing, easy-to-read instrumentation, pop-up bungee hooks and a coolant temperature gauge. The Ninja 250R is Kawasaki Ninja performance in a compact package and at a great price.
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Engine
| Engine Type |
Liquid-cooled, 4-stroke, parallel twin, 8 valve, DOHC |
| Displacement |
248cc |
| Compression Ratio |
12.4:1 |
| Bore and Stroke |
62.0mm x 41.2mm (2.44 x 1.62 inches) |
| Redline |
14,000 RPM |
| Valve Train |
DOHC; four-valve |
| Ignition System |
CDI (electronic advance) |
| Lubrication System |
Forced lubrication wet sump |
| Starting System |
Electric |
| Carburetion |
Keihin CVK30 (2), Constant velocity, Diaphragm-type |
| Transmission Type |
6-speed, constant mesh, return shift |
| Clutch Type |
Wet, Multi-disc, Manual, Cable-actuated |
| Final Drive System |
Chain, 520x106 |
| Front / Rear Sprocket |
14T / 45T |
| Final Reduction Ratio |
3.214 (45/14) |
| Primary Reduction Ratio |
3.086 71/23 |
| Gear Ratio |
1st 39/15, 2nd 34/19, 3rd 31/22, 4th 29/25, 5th 27/27, 6th 25/28 |
| Battery |
YB9L-A2 (12 V, 6 Ah) |
| Spark Plug |
NGK C8HSA or ND U24FS-U |
Frame
| Frame Type |
Semi-double cradle, high-tensile steel |
| Rake/Trail |
27 deg/3.3 inches |
Suspension/Tires
| Front Tire |
Tubeless; 100/80x16 |
| Rear Tire |
Tubeless; 130/80x16 |
| Brakes |
Single Disc front and rear with balanced action caliper |
| Forks |
Hydraulic telescopic 36mm forks w/ 125mm (5.5") of travel |
| Shock |
Bottom-Link UNI-TRAK w/ 110mm (5.1") of travel |
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Dimensions
| Overall Length | 80.1 in (2035 mm) |
| Overall Width | 28.0 in (710 mm) |
| Overall Height | 43.1 in (1095 mm) |
| Seat Height | 29.3 in (745 mm) |
| Wheelbase | 55.1 in (1400 mm) |
| Ground Clearance | 6.1 in (155 mm) |
| Dry/Wet Weight | 304/355 pounds |
| Curb Weight Front | 167.55 lb (76 kg) |
| Curb Weight Front | 187.39 lb (85 kg) |
| Max Load | 340 pounds |
Capacities
| Fuel Tank | 4.8 Gallons (Min 91 Research / 87 Avg. Octane Unleaded) |
| Engine Oil | 1.9 Liters (SE-SG Class SAE 10W40-20W50) |
| Coolant | 1 Liter or 1.1 Quarts (%50 Distilled Water/50% Ethylene Glycol Antifreeze) |
Performance
| 0-60 mph (0-100km/h) | 5.5 seconds |
| 1/4 Mile | 15 seconds |
| Maximum Speed | 112 mph claimed, 105 mph tested |
| Horsepower | 36 @ 12,500rpm (26 @ rear wheel) Stock Dyno Chart |
| Torque | 18.1 Ft/Lbs @10,000 RPM (14 @ rear wheel) Stock Dyno Chart |
| Braking Distance | 41 ft from 31.07 mph
(12.5 m from 50 km/h) |
| Minimum Turning Radius | 9.19 ft (2.3 m) |
| Fuel Efficency | 55-75 MPG |
Resources:
♦ Parts Catalog (local mirror)
I also include aftermarket alternatives as I discover / need them.
♦ Modifications
Coverting your Ninja into a competitive race bike.
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May 15, 2007
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