2021 Kawasaki KLX300 SM Technical Analysis & Specification Breakdown
At the heart of the 2021 Kawasaki KLX300 SM super motard motorcycle, Kawasaki relies on a 292 cc (17.8 cu in) liquid-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 78.0 x 61.2 mm (3.1 x 2.4 inches) with a 11.1:1 compression ratio.
On the scales, the KLX300 SM measures 137 kg (302 lbs) dry. Rider ergonomics and chassis geometry center around a 861 mm (33.9 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,440 mm (56.7 in) wheelbase engineered for balanced agility and highway composure. The 7.57-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 5 indexed model years from 2021 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
861 mm (33.9 in)
Engine
Displacement292.0 ccm (17.82 cubic inches)
Engine TypeSingle cylinder, four-stroke
Compression11.1:1
Bore x Stroke78.0 x 61.2 mm (3.1 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. DFI® with 34mm Keihin throttle body
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
