Kawasaki KLX 250S - 2021 Specifications and Reviews

The 2021 Kawasaki KLX 250S is a lightweight supermoto designed for beginner and intermediate riders seeking an affordable, nimble platform for both street and light off-road use. Known for its approachable 249cc single-cylinder engine and forgiving handling characteristics, it excels in urban environments and unpaved terrain. The liquid-cooled four-stroke delivers dependable performance with minimal maintenance demands.

Not Rated stars Average rating: Not Rated from 0 votes
.

General information

CategorySuper motard
Year2021
ModelKawasaki KLX 250S

Engine and Transmission Specifications

ClutchWet multiplate
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionDigital CDI
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemCarburettor. Keihin CVK34
Valves per Cylinder4
Bore x Stroke72.0 x 61.2 mm (2.8 x 2.4 inches)
Compression11.0:1
Engine typeSingle cylinder, four-stroke
Capacity:249.0 ccm (15.19 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter250 mm (9.8 inches)
Front brakesSingle disc. Floating discs. Hydraulic. Two-piston calipers.
Rear tire4.6-18
Front tire3-21
Rear wheel travel230 mm (9.1 inches)
Rear SuspensionUni-Trak with adjustable preload, 16-way compression and rebound damping adjustment
Front wheel travel255 mm (10.0 inches)
Front Suspension43mm inverted cartridge fork with 16-way compression damping adjustment
Trail104 mm (4.1 inches)
Rake (fork angle)26.5°
Frame typePerimeter, high-tensile steel
 
 

Physical measures and capacities

Fuel capacity7.70 litres (2.03 US gallons)
Wheelbase1430 mm (56.3 inches)
Ground clearance285 mm (11.2 inches)
Overall width860 mm (33.9 inches)
Overall length2200 mm (86.6 inches)
Overall height1250 mm (49.2 inches)
Seat height890 mm (35.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc135.0 kg (297.6 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty24 Months Unlimited Kilometers
StarterElectric & kick
Color optionsLime Green

Performance Profile & Rider Fit

Best For

Track25%
City55%
Cornering65%
Daily Riding45%
Touring30%
Passenger20%

Rider Profile

Best ForSuits beginner to intermediate riders who want a light, forgiving dual-purpose bike to build confidence on and off pavement.
PurposeDesigned as a dual-sport machine for trail riding, light off-road exploration, and casual commuting rather than outright speed.
Rider FitThe tall 890mm seat height and slim, lightweight 135kg chassis favor taller or more agile riders comfortable standing on pegs and managing a top-heavy stance at low speed.
CharacterA playful, nimble single-cylinder trail bike that rewards flickable handling and tolerant, adventurous riding over raw power or refinement.
Not Ideal ForNot the right choice for riders seeking highway speed, long-distance touring comfort, or a passenger-friendly setup.

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

Rider Fit Visualizer

2021 Kawasaki KLX 250S Rider Ergonomics Assessment

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

Feet:

At 890mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2021 Kawasaki KLX 250S, with a relaxed knee angle of around 140 degrees and a forward-leaning 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.

Find bikes that fit your height →

Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2021 Kawasaki KLX 250S is a versatile and capable dual-sport motorcycle that is perfect for both on and off-road riding. With a lightweight chassis and exceptional handling, this bike is a joy to ride in any terrain. The 249cc engine provides plenty of power for smooth acceleration, while the long-travel suspension offers a comfortable and controlled ride over rough surfaces. Whether you're cruising around town or exploring a dirt trail, the KLX 250S delivers an exhilarating and confidence-inspiring experience. In addition to its impressive performance, the 2021 KLX 250S also boasts a stylish and modern design, with aggressive bodywork and sharp lines that exude a sense of adventure. The comfortable ergonomics and upright seating position make it easy to handle, and the bike's fuel efficiency and durable construction ensure that it can handle whatever you throw at it. Whether you're a seasoned rider or just starting out, the Kawasaki KLX 250S is a fantastic choice for anyone looking for a reliable and fun dual-sport motorcycle.
Reply

Add a Comment


Please Login or Register if you would like to leave a comment.