Built around KTM's cross - motocross motorcycle platform, the 2004 KTM 250 SX relies on a 249 cc (15.2 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 66.4 x 72.0 mm (2.6 x 2.8 inches).
On the scales, the 250 SX measures 97.7 kg (215 lbs) dry. Rider ergonomics and chassis geometry center around a 925 mm (36.4 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,475 mm (58.1 in) wheelbase engineered for balanced agility and highway composure. The 7.5-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's KTM archive, this model family spans 24 indexed model years from 2000 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
925 mm (36.4 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Bore x Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Fuel SystemCarburettor
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Frame TypeChromium molybdenum
Rake24.0°
Trail63 mm (2.5 inches)
Front SuspensionWP-USD 48/26 MA/PA
Rear SuspensionWP-PDS-DA shock absorber
Wheelbase1475 mm (58.1 inches)
Ground Clearance385 mm (15.2 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø216 mm (8.5 inches)
Rear BrakesSingle disc
Rear Brake Ø260 mm (10.2 inches)
Dimensions & Weight
Dry Weight97.7 kg (215.4 pounds)
Seat Height925 mm (36.4 inches) If adjustable, lowest setting.
Alt. Seat Height675 mm (26.6 inches) If adjustable, highest 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.
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.
