Positioned in KTM's enduro - offroad motorcycle lineup, the 2010 KTM 250 SX pairs a 249 cc (15.2 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. 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 95.4 kg (210 lbs) dry. Rider ergonomics and chassis geometry center around a 985 mm (38.8 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 8-liter (2.1 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
985 mm (38.8 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. Keihin PWK 36S AG
IgnitionKokusan
LubricationMixture oil lubrication 1:60
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet mDouble disk clutch, operated hydraulically
Performance
ExhaustAluminium
Chassis
Frame TypeCentral double-cradle-type 25CrMo4
Rake26.5°
Front SuspensionWP USD 48 mm fork
Front Travel300 mm (11.8 inches)
Rear SuspensionWP PDS shock absorber
Rear Travel335 mm (13.2 inches)
Wheelbase1475 mm (58.1 inches)
Ground Clearance385 mm (15.2 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre110/90-19
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight95.4 kg (210.3 pounds)
Seat Height985 mm (38.8 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.
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.
