KTM 250 SX - 2003 Specifications and Reviews

The 2003 KTM 250 SX is a lightweight motocross machine designed for intermediate riders seeking competitive performance in the 250cc class. Known for its nimble handling and responsive liquid-cooled engine, this bike excels in technical terrain and racing applications. Its compact dimensions and 97 kg weight make it accessible for developing riders transitioning to serious off-road competition.

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General information

CategoryCross / motocross
Year2003
ModelKTM 250 SX

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox5-speed
Cooling systemLiquid
Fuel systemCarburettor
Bore x stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Stroke2
Engine typeSingle cylinder
Capacity:249.00 ccm (15.19 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,475 mm (58.1 inches)
Ground clearance385 mm (15.2 inches)
Seat height925 mm (36.4 inches) If adjustable, lowest setting.
Dry weight97.2 kg (214.3 pounds)

KTM 250 SX dimensions and frame

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre dimensions110/90-19
Front tyre dimensions80/100-21
Rear suspension travel335 mm (13.2 inches)
Front suspension travel300 mm (11.8 inches)

Speed and acceleration

Fuel capacity7.50 litres (1.98 gallons)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track85%
City5%
Cornering90%
Daily Riding5%
Touring8%
Passenger0%

Rider Profile

Best ForThis is a full-blooded competition motocrosser best suited to experienced or intermediate off-road riders comfortable with a peaky 2-stroke powerband.
PurposeBuilt purely for motocross track riding and racing, not for street use or general transportation.
Rider FitThe tall 958 mm seat height, aggressive ergonomics, and physical demands of a light 2-stroke race bike require good rider fitness and reasonable inseam length.
CharacterSharp, explosive, and razor-agile, this bike rewards aggressive riding and precise throttle control with rapid acceleration bursts and flickable handling.
Not Ideal ForThis is not suitable for commuting, touring, carrying passengers, or riders seeking a comfortable, low-maintenance everyday motorcycle.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2003 KTM 250 SX Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 925mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2003 KTM 250 SX, with a cramped knee angle of around 80 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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