Engineered by KTM for the cross - motocross motorcycle segment, the 2025 KTM 300 SX pairs a 293.2 cc (17.9 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 72.0 x 72.0 mm (2.8 x 2.8 inches).
On the scales, the 300 SX measures 99.4 kg (219 lbs) dry. Rider ergonomics and chassis geometry center around a 958 mm (37.7 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,493 mm (58.8 in) wheelbase engineered for balanced agility and highway composure. The 7.2-liter (1.9 US gal) fuel tank paired with a rated consumption of 2.79 L/100 km provides an estimated theoretical range of roughly 258 km (160 miles) between fill-ups.
Within MotoLibrary's KTM archive, this model family spans 3 indexed model years from 2023 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~258 km (160 mi)
Engine
Displacement293.2 ccm (17.89 cubic inches)
Engine TypeSingle cylinder, two-stroke
Bore x Stroke72.0 x 72.0 mm (2.8 x 2.8 inches)
Fuel SystemInjection. Keihin EFI, throttle body 39 mm
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.
