KTM 250 SX F - 2026 Specifications and Reviews

The KTM 250 SX-F is a lightweight motocross machine designed for intermediate to advanced riders seeking competitive performance on the track. Powered by a potent 250cc four-stroke engine with fuel injection, it delivers sharp throttle response and reliable power delivery. The bike is renowned for its agile handling, nimble acceleration, and class-leading competition credentials in the 250F motocross category.

2026
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General information

Color OptionsOrange/white/grey/red/yellow
CategoryCross / motocross
ModelKTM 250 SX-F

Engine and Transmission Specifications

StartingElectric
ClutchWet multi-disc clutch, Brembo hydraulics
Final DriveChain (final drive)
Gearbox5-speed
Cooling SystemLiquid
IgnitionKeihin EMS
InductionInjection. Keihin EFI, throttle body 44 mm
Bore x Stroke81.0 x 48.5 mm (3.2 x 1.9 inches)
Compression Ratio14.5:1
Capacity:249.9 ccm (15.25 cubic inches)
 
 

Physical measures and capacities

Fuel Capacity7.20 litres (1.90 US gallons)
Wheelbase1493 mm (58.8 inches)
Ground Clearance343 mm (13.5 inches)
Seat Height958 mm (37.7 inches) If adjustable, lowest setting.
Dry Weight101.0 kg (222.7 pounds)
 
 

KTM 250 SX F dimensions and frame

WheelsSpoked wheels with aluminium rims.
Rear BrakesSingle disc
Brake Disc Diameter220 mm (8.7 inches)
Front BrakesSingle disc
Rear Tyre110/90-19
Front Tyre80/100-21
Rear Wheel Travel300 mm (11.8 inches)
Rear SuspensionWP XACT Monoshock with linkage
Front Wheel Travel310 mm (12.2 inches)
Front SuspensionWP XACT-USD (AER), Ø 48 mm
FrameCentral double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe.

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Update specsReport missing specs or required updates.
CommentsConnectivity.
Electrical2 Ah lithium-ion battery
Rake (fork angle)26.1°
Exhaust systemAluminum
Driveline520, Non-sealed chain.
Engine typeSingle cylinder, four-stroke
Year2025

Performance Profile & Rider Fit

Best For

Track85%
City10%
Cornering90%
Daily Riding10%
Touring10%
Passenger5%

Rider Profile

Best ForThis is a full-blown 250cc motocross machine best suited to intermediate and advanced riders who already know how to manage a light, high-strung, race-tuned bike.
PurposeBuilt purely for motocross competition and off-road riding, excelling on tracks and rough terrain rather than pavement.
Rider FitAt around 101 kg dry with a tall 958 mm seat height, it demands good fitness, strong legs, and comfort standing on the pegs for extended periods.
CharacterA sharp, aggressive, high-revving single-cylinder bike that rewards precise inputs with explosive acceleration and razor-sharp handling.
Not Ideal ForNot suitable for riders wanting a comfortable commuter, a passenger-friendly bike, or anything resembling relaxed street or long-distance touring.

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

Rider Fit Visualizer

2026 KTM 250 SX F Rider Ergonomics Assessment

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

Feet:

At 958mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2026 KTM 250 SX F, with a cramped knee angle of around 85 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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