2006 Kawasaki KLX250S

Street legal model with electric start makes debut in Kawasaki showrooms.

It may be dressed in the same Kawasaki Lime Green as its sibling KLX300R off-road speedster, but the all-new KLX250 with electric start finds itself equally at home on the pavement as it will when the riding terrain calls for enduro-like performance. Aggressively styled in the same manner as Kawasaki’s KX™ motocross equipment, the KLX250 features a lightweight engine with a wide powerband, and a lightweight, high-tensile steel perimeter frame.

Powering this new entry in the Kawasaki stable is a compact, liquid-cooled, four-stroke, single-cylinder engine displacing 249cc. With bore and stroke measuring 72 x 61.2 mm, the engine is mounted towards the bottom of the perimeter frame, helping to deliver a low center of gravity.

Kawasaki KLX250S

The engine’s dual overhead cams activate four valves atop an electrofusion-coated aluminum cylinder that provides the KLX250 power plant with extra strength and reliability. The design of the cylinder head provides maximum valve area for optimum flow, and a low reciprocating weight contributes to higher efficiency at high rpm readings.

Riders headed out for a long trip will appreciate the gear-driven engine balancer, which helps eliminate engine vibration to deliver greater rider comfort and less fatigue.

When getting off the pavement calls for extra protection, the KLX250’s aluminum engine guard shields the crankcase from rocks and stones so prevalent when riding on gravel or dirt roads.

Kawasaki KLX250S

With today’s fuel prices, even motorcyclists want to pay attention to gasoline consumption. A Keihin 34mm semi-flat slide CVK carburetor equipped with a Throttle Position Sensor delivers the optimum amount of fuel required under all riding conditions, contributing to improved responsiveness and power, as well as increased fuel economy. Motorcyclists will notice the 26.5° caster angle and short wheelbase which contribute to quick handling response, while the frame rigidity helps straight-line stability. The Uni-Trak® rear suspension provides superb road-holding ability and bump absorption and the 43mm inverted cartridge-style front fork comes with a 16-way compression damping adjustment. Stopping the powerful KLX250 is handled by front and rear disc brakes. A twin-piston caliper grips a 250mm semi-floating disc up front, while a single piston caliper operates the 220mm rear disc.

Among the other key features of the new KLX250

  • Flat-top piston and pentroof combustion chamber deliver an 11:1 compression ratio. Lightweight piston, piston pin and connecting rod allow power-producing revs.
  • Starting the KLX250 is simplified through the use of an electric starter and Kawasaki Automatic Compression Release (KACR), which automatically lifts an exhaust valve at cranking rpm.
  • The digital CDI provides precise control of ignition timing and contributes to easy starts and reliability under extreme conditions.
  • Dual, vertical-flow radiators provide highly efficient, reliable engine cooling.
  • A lightweight, rigid aluminum swingarm contributes to reduced unsprung weight.
  • Dual-dial instrument panel features easy-to-read analogue speedometer and tachometer, odometer, trip meter, water temperature warning lamp, and a series of indicator lamps.
  • Snail-type chain adjusters simplify wheel removal and chain adjustments.
  • The KLX250 is equipped with a 1.9 gallon fuel tank, narrowly constructed to provide the rider with a comfortable position.
  • Motorcyclists seeking enduro looks and performance in a motorcycle designed for effortless street riding will find it at their local Kawasaki dealership. The all-new KLX250 takes itself seriously, regardless of where the rider wants to take it.
Kawasaki KLX250S

Kawasaki KLX 250S Specifications

  • Engine Type: 4-Stroke, Liquid-Cooled, DOHC, 4-Valve Single
  • Displacement: 249 cc
  • Bore & Stroke: 72.0 x 61.2 mm
  • Compression Ratio: 11.0:1
  • Carburetor: Keihin CVK34
  • Ignition: Digital CDI
  • Transmission: 6-Speed
  • Rake/Trail: 26.5°/4.2 in.
  • Front Wheel Travel: 11.2 in.
  • Rear Wheel Travel: 11.0 in.
  • Front Tire Size: 80/100-21
  • Rear Tire Size: 100/100-18
  • Front Suspension: 43mm Inverted Cartridge Fork with 16-Way Compression Damping Adjustment
  • Rear Suspension: Uni-Trak with Adjustable Preload, 16-Way Compression and Rebound Damping Adjustment
  • Wheelbase: 56.5 in.
  • Front Brake Type: Disc
  • Rear Brake Type: Disc
  • Fuel Tank Capacity: 1.9 gal.
  • Ground Clearance: 11.6 in.
  • Seat Height: 34.8 in.
  • Dry Weight: 262 lb.
  • Color: Lime Green
  • MSRP: $4,699


great bike for a new rider looking for a dual purpose. this was my first bike and i loved it. it’s much slower than the big boys but i can beat my buddy’s Ducati through an intersection. but after that he’s long gone. averages about 60 mpg but riding it hard one time i ran outta gas at 106 miles with a full tank. my top speed on this bike was 87 with no wind when i was chasing down a friends Mazda RX 7. It has handled everything i’ve thrown at it with ease. but it’s a tall bike, anyone under 6 ft might have a hard time riding it.

good newbie bike.. slow to keep up with the big boyz, time gives way to a cam chain having to be replaced (’99). i’ve ranged just over 150 km’s to the tank - highway ridin’

The farthest I have made it on one tank of gas is 114 before I filled up.

What distance does the tank give you?

Why can’t this be specified like motor vehicles provide.

Long term KLX250S review, ADVrider Forum thread

Is there ever going to be an actual serious performance test on this motorcycle?
What is the rear wheel horsepower?
Why the miniature 1.9 gallon gas tank? Is a larger one available?
Is Kawasaki going to sell a kickstarter for this electric start machine (I’d prefer a kickstarter for any dual purpose motorcycle)?

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