Standard Features


A Capable Dirtbike for Fun and Adventure

Taller riders will appreciate the KLX™140L, which features taller wheels – 19-inch front and 16-inch rear – than a standard-spec KLX140. It incorporates all of the virtues of the standard 140, including an engine that provides a steady flow of power that new and seasoned riders will enjoy. The 140L model is equipped with a more performance-oriented, reservoir-equipped shock, because it’s popular with a larger, more experienced crowd. Of course, the standard KLX – with 17-inch front and 14-inch rear wheels – is still a great option for novices and smaller riders.


Model Year
Starting at MSRP


74.6 in.
42.3 in.
31.1 in.
209.4 lbs.
Ground Clearance
10 in.
50.6 in.
Seat Height
31.5 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


Final Drive


Front: Single 220 mm petal disc with a 2-piston caliper
Rear: Single 186 mm petal disc with 1-piston caliper
Front: 70/100-19
Rear: 90/100-16


High-tensile steel, box-section perimeter
Front: 33 mm telescopic fork; 7.1 in. travel
Rear: UNI-TRAK® linkage system and 1 shock with piggyback reservoir, fully adjustable preload and 22-way rebound damping; 7.1 in. travel
3.8 in.


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Standard Features

Key Features
 144 cc air-cooled, single-cylinder engine is both 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  
 Rear shock with piggyback reservoir has fully adjustable preload, 4-way compression damping and 22-way rebound damping  
 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 both simple to operate and to maintain  
 Engine revs easily and allows riders to use the full rpm range up to the 10,500 rpm rev limiter  
 Exhaust pipe is curved to achieve optimum length for good power character  
 The quiet muffler is equipped with a USFS approved spark arrester, meaning the KLX140L can access designated public off-road riding areas  
 Oil-moistened air-filter is washable, reusable, easily accessed and highly effective in dusty situations  
 31.5 in. seat height accommodates taller riders  
Electric Start
 Starting is via a (keyless) electric starter button on the handlebar  
 Orange LED light activates when the power button is depressed, indicating that power is “ON”  
 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 and 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 that acts like a shock absorber  
 Float material is rubber instead of plastic  
Close-ratio Transmission
 Close gear ratios help the KLX’s acceleration performance  
 Like the KX models, the shift lever features a ball bearing to ease shifting and has a folding tip for less damage in a crash  
Progressive Manual Clutch
 Manual clutch offers young riders the chance to master clutch engagement and gear shifting  
 A spring damper in the clutch gives it a 2-stage engagement that permits half-clutch use when riding at extremely low rpm or idling speeds, and helps provide direct clutch feel and better 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 KLX250S  
 Aluminum swingarm offers light weight, strength and a hairline finish like on the KX machines  
 KX-style chain adjusters allow precise chain adjustments  
Superior Suspension
 33 mm telescopic fork assembly has spring rates and damping settings specific to the 140L  
 Intended for use at a quicker pace, the KLX140L features a rear shock with a piggyback reservoir fully adjustable spring preload, 4-way compression damping and 22-way rebound damping  
KX-style Wheels
 Strong, high-grade die-cast hubs offer the same durability as those found on the KX  
 Durable, lightweight RK EXCEL aluminum rims on the 19 / 16 in. 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  
 In addition to helping reduce unsprung weight, the wave shapes of the petal discs help clean the brake pads for more efficient braking performance  
 Combination of the flat surface of the frame’s box-section, long footpegs mounted close to the bikes’ centerline and no kick-start lever add up to good grip and a high level of machine control  
 Footpeg / frame relationship is modeled after the KX line for maximum leg grip  
 Handlebar is rubber-mounted for reduced vibration transferred to the rider’s hands  
 2-piece upper triple clamp and handle clamp foster easy aftermarket handlebar installation  
 Raised pattern on half of the grip surface offers more control and comfort  
 2-tone seat cover has a slip-resistant top surface for good grip when seated and smooth sides for excellent rider mobility when standing  
Sharp, Aggressive Bodywork Styling
 Box-section perimeter frame features advanced styling similar to that found on KX racers  
 2-piece shrouds with ventilation holes inspired by the top-of-the-line KX race machines  
 Fuel tank cover provides a flush transition from tank to shroud, and contributes to the bike’s high level of 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 cooler to the touch than steel  


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*Price, if shown, is Manufacturer's Suggested Retail Price (MSRP) and does not include government fees, taxes, dealer vehicle 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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