Engineered by Kawasaki for the super motard motorcycle segment, the 2021 Kawasaki KLX 250S utilizes a 249 cc (15.2 cu in) liquid-cooled single cylinder, four-stroke layout. Internal engine geometry specifies a bore and stroke of 72.0 x 61.2 mm (2.8 x 2.4 inches) with a 11.0:1 compression ratio.
On the scales, the KLX 250S measures 135 kg (298 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 890 mm (35 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,430 mm (56.3 in) wheelbase engineered for balanced agility and highway composure. The 7.7-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 7 indexed model years from 2010 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
890 mm (35 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, four-stroke
Compression11.0:1
Bore x Stroke72.0 x 61.2 mm (2.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemCarburettor. Keihin CVK34
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital CDI
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet multiplate
Chassis
Frame TypePerimeter, high-tensile steel
Rake26.5°
Trail104 mm (4.1 inches)
Front Suspension43mm inverted cartridge fork with 16-way compression damping adjustment
Front Travel255 mm (10.0 inches)
Rear SuspensionUni-Trak with adjustable preload, 16-way compression and rebound damping adjustment
Rear Travel230 mm (9.1 inches)
Wheelbase1430 mm (56.3 inches)
Ground Clearance285 mm (11.2 inches)
Wheels & Brakes
Front Tyre3-21
Rear Tyre4.6-18
Front BrakesSingle disc. Floating discs. Hydraulic. Two-piston calipers.
Front Brake Ø250 mm (9.8 inches)
Rear BrakesSingle disc
Rear Brake Ø240 mm (9.4 inches)
Dimensions & Weight
Weight incl.135.0 kg (297.6 pounds)
Seat Height890 mm (35.0 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
