KTM 250 SX-F - 2006 Specifications and Reviews

The 2006 KTM 250 SX-F is a lightweight four-stroke motocross machine designed for intermediate to advanced riders seeking competitive performance on the track. Its compact 249cc single-cylinder engine delivers responsive power delivery with excellent fuel efficiency, while the liquid-cooled architecture and six-speed transmission provide reliable operation in demanding race conditions. Known for its nimble handling and aggressive styling, this model established KTM's reputation for producing class-leading four-stroke motocrossers.

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General information

CategoryCross / motocross
Year2006
ModelKTM 250 SX-F

Engine and Transmission Specifications

Exhaust systemAluminum
ClutchWet multi-disc clutch, operated hydraulically
Gearbox6-speed
Cooling systemLiquid
Lubrication systemPressure lubrication with 2 Eaton pumps
IgnitionKokusan digital 4K-3A
Fuel controlDOHC
Fuel systemCarburettor. Keihin MX FCR 39
Valves per cylinder4
Bore x stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Compression12.8:1
Engine typeSingle cylinder, four-stroke
Capacity:249.50 ccm (15.22 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear tyre dimensions100/90-19
Front tyre dimensions80/100-21
Rear suspension travel335 mm (13.2 inches)
Rear suspensionWP-PDS shock absorber
Front suspension travel300 mm (11.8 inches)
Front suspensionWP-USD 48 mm (1.89 inches)
Rake (fork angle)26.5°
Frame typeCentral double-cradle-type 25 CrMo4
 
 

Physical measures and capacities

Fuel capacity7.00 litres (1.85 gallons)
Wheelbase1,481 mm (58.3 inches)
Ground clearance380 mm (15.0 inches)
Seat height925 mm (36.4 inches) If adjustable, lowest setting.
Dry weight98.5 kg (217.2 pounds)

Other specs

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

Performance Profile & Rider Fit

Best For

Track90%
City10%
Cornering85%
Daily Riding10%
Touring12%
Passenger5%

Rider Profile

Best ForThis is a full-size 250cc motocross machine best suited to intermediate through expert off-road riders, not newcomers to dirt biking.
PurposeBuilt purely as a motocross competition bike for closed circuits and tracks, with sharp handling and high-performance suspension rather than everyday usability.
Rider FitThe tall 958 mm seat height, firm suspension, and lack of creature comforts demand good rider fitness, leg length, and off-road riding technique.
CharacterA lightweight, race-bred single-cylinder machine defined by aggressive acceleration, precise cornering, and razor-sharp responsiveness over rough terrain.
Not Ideal ForThis bike is not suitable for riders wanting a comfortable commuter, a passenger-friendly machine, or a long-distance touring companion.

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

Rider Fit Visualizer

2006 KTM 250 SX-F Rider Ergonomics Assessment

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Feet:

At 925mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2006 KTM 250 SX-F, 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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