Kawasaki KLX 140 Monster Energy - 2010 Specifications and Reviews

The 2010 Kawasaki KLX 140 Monster Energy is a lightweight enduro bike designed for young and novice off-road riders seeking an affordable entry point into dirt biking. Powered by a reliable 144cc air-cooled single-cylinder four-stroke engine with a five-speed transmission, it delivers manageable power and excellent maneuverability on trails and rough terrain. The bike is best known for its durability, ease of maintenance, and proven performance as a starter machine for building fundamental riding skills.

2010
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General information

CategoryEnduro / offroad
Year2010
ModelKawasaki KLX 140 Monster Energy

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox5-speed
Cooling systemAir
Fuel controlSOHC
Fuel systemCarburettor. Keihin PB20
Valves per cylinder2
Bore x stroke58.0 x 54.4 mm (2.3 x 2.1 inches)
Engine typeSingle cylinder, four-stroke
Capacity:144.00 ccm (8.79 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter186 mm (7.3 inches)
Rear brakesSingle disc
Front brakes diameter220 mm (8.7 inches)
Front brakesSingle disc
Rear tyre dimensions90/100-14
Front tyre dimensions70/100-17
Rear suspensionUNI-TRAK linkage system and single shock with 5-way preload adjustability / 7.1 in.
Front suspension33mm telescopic fork / 7.1 in.
Rake (fork angle)27.0°
Frame typeHigh-Tensile steel, box-section perimeter
 
 

Physical measures and capacities

Fuel capacity5.67 litres (1.50 gallons)
Wheelbase1,260 mm (49.6 inches)
Ground clearance236 mm (9.3 inches)
Overall length1,821 mm (71.7 inches)
Overall height1,049 mm (41.3 inches)
Seat height780 mm (30.7 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc93.0 kg (205.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsEbony

Performance Profile & Rider Fit

Best For

Track10%
City30%
Cornering45%
Daily Riding25%
Touring10%
Passenger5%

Rider Profile

Best ForThis bike is best suited to beginner and younger riders, including those stepping up from smaller pit bikes or looking for a confidence-building trail machine.
PurposeIt's a small-displacement off-road trail bike designed for casual dirt riding, light trails, and learning fundamentals rather than performance or distance.
Rider FitIts low seat height and lightweight chassis make it very approachable for smaller-statured or younger riders, though taller adults will feel cramped.
CharacterIt has a playful, forgiving, and easy-going nature, rewarding smooth inputs over aggressive riding and encouraging skill-building at low speeds.
Not Ideal ForIt is not suitable for highway travel, long-distance touring, carrying a passenger, or riders seeking strong power and high-speed performance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2010 Kawasaki KLX 140 Monster Energy Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 780mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2010 Kawasaki KLX 140 Monster Energy, with a cramped knee angle of around 65 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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