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Standard Features


Powerful Package with Easy-to-Handle Personality

Regardless of a rider’s level of experience, the KLX™140 provides the perfect opportunity to show just how much a little can do. This compact, multi-talented dirt bike offers straightforward push-button starting, and a steady flow of power that will fit the needs of both young and old.


Model Year
Starting at MSRP


71.7 in.
41.3 in.
31.1 in.
205 lbs.
Ground Clearance
9.3 in.
49.6 in.
Seat Height
30.7 in.


4-stroke, SOHC, 2-valve single
144 cc
Bore x Stroke
58 x 54.4 mm
Compression Ratio
Keihin PB20
Fuel Tank Capacity
1.5 gal.
Wet multi-disc manual clutch


Final Drive


Front: Single 220 mm petal disc with a 2-piston caliper
Rear: Single 186 mm petal disc with 1-piston caliper
Front: 70/100-17
Rear: 90/100-14


High-tensile steel, box-section perimeter
Front: 33 mm telescopic fork; 7.1 in. travel
Rear: UNI-TRAK® linkage system and 1 shock with 5-way preload adjustability; 7.1 in. travel
3.3 in.


Lime Green

Standard Features

At a Glance…
 144 cc air-cooled, single-cylinder engine is simple to operate and to maintain  
 Close-ratio transmission makes optimum use of the engine’s power  
 Progressive manual clutch offers young riders the chance to master clutch engagement and gear shifting  
 Keyless electric starting via a starter button on the handlebar; an LED indicates when the power button is on to help prevent accidental battery drain  
 Front 220 mm petal disc and large-bore 27 mm twin-piston caliper (same size as those on the KX450F / 250F) for strong and easy-to-control braking  
 Quiet muffler is equipped with a USFS approved spark arrester, meaning the KLX140L can access designated public off-road riding areas  
144 cc Air-cooled, Single-cylinder Engine
 Reliable and easy to use lightweight engine is simple to operate and maintain  
 Engine revs easily and allows riders to use the engine’s full rpm range up to the rev limiter at 10,500 rpm  
 Exhaust pipe is curved to achieve optimum length for good power characteristics  
 Quiet muffler is equipped with a USFS approved spark arrester, meaning the KLX140 can access designated public off-road riding areas  
 Oil-coated air filter is washable, reusable, easily accessed and highly effective in dusty situations  
Electric Start
 Keyless electric starting via handlebar-mounted button  
 Orange LED light activates when the power button is depressed, indicating that power is “ON” to help prevent accidental battery drain  
 Digital CDI ignition helps ensure quick, reliable starts  
 Oval piston-valve Keihin PB20 carburetor features several Kawasaki-original modifications to provide stable fuel delivery under rough off-road conditions  
 Partitions in the float chamber keep the fuel from sloshing excessively, while an umbrella around the main jet traps fuel when jumping  
 Dual air vents help provide a stable fuel supply and eliminate hesitation even when the bike is at extreme lean angles  
 Needle valve is suspended on a spring, which acts like a shock absorber  
 Float material is rubber instead of plastic  
Close-ratio Transmission
 Close gear ratios help the acceleration performance of the KLX140  
 Shift lever features a ball bearing design for easy shifting like KX™ models, and has a folding tip for reduced crash damage  
Progressive Manual Cutch
 Manual clutch offers young riders the chance to master clutch engagement and gear shifting  
 Spring damper in the clutch provides a 2-stage engagement that permits half-clutch use when riding at extremely low rpm or idling speeds, and helps provide better clutch feel and durability  
Box-section Perimeter Frame
 Ready for the off-road abuse, the highly rigid, KX-inspired high-tensile steel perimeter frame uses the same upper tubes as the high-performance KLX250S  
 Aluminum swingarm is lightweight, strong and features a hairline finish just like the KX machines  
 KX-style chain adjusters allow precise chain adjustment  
Superior Suspension
 33 mm telescopic fork has spring rates and damping settings specific to each model  
 KLX140 rear shock features 5-way preload adjustability and a Uni-Trak® linkage  
 More advanced KLX140L rear shock and reservoir can be mounted on the KLX140 for faster riders  
KX-style Wheels
 Strong, high-grade die-cast hubs offer the same durability as those on the KX models  
 Durable, lightweight RK EXCEL aluminum rims are featured on the KLX’s 17- / 14-inch front / rear wheels  
Petal Disc Brakes Front and Rear
 Front 220 mm petal disc and large-bore 27 mm twin-piston caliper (same size as those on the KX450F / 250F) offer strong and easy-to-control braking  
 Rear brake uses a 186 mm petal disc gripped by a 27 mm single-piston caliper  
 Rear brake master cylinder features a large-volume, unitized reservoir that contributes to stable braking and helps ensure sufficient fluid pressure, even when the brake pad wears down  
 The wave shape of the petal discs help clean the brake pads for more efficient braking performance and reduce unsprung weight  
 Flat-shaped box-section of frame, long footpegs mounted close to the bikes’ centerline and no kick-start lever combine to offer riders a good grip on the bike and thusly a higher level of machine control  
 Footpeg / frame relationship is modeled after the KX models for maximum leg grip  
 Handlebar is rubber-mounted to reduce vibration transferred to the rider’s hands  
 Two-piece upper triple clamp and handle clamp allow easy aftermarket handlebar installation  
 Raised pattern on half of the handgrip surface improves rider grip and comfort  
 Two-tone seat cover has a slip-resistant top surface for improved grip and smooth sides for excellent rider mobility when standing  
Sharp, Aggressive Bodywork Styling
 Box-section perimeter frame features advanced styling similar to that of the KX racers  
 Two-piece shrouds with ventilation holes inspired by the top-of-the-line KX race machines  
 Fuel tank cover provides a smooth transition from tank to shroud, and contributes to the high level fit and finish  
 Eye-catching box muffler design protrudes as little as possible from behind the side cover and features a plastic muffler end-cap that offers a surface that’s cooler to the touch than steel  


Lime Green
*Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer freight/preparation, dealer document preparation charges or any finance charges (if applicable). MSRP and/or final actual sales price will vary depending on options or accessories selected.

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*Suggested Retail Price (SRP) excludes destination charge. Visit to view applicable destination charge amount.

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