KTM 250 SX - 2017 Specifications and Reviews

The 2017 KTM 250 SX is a lightweight two-stroke motocross bike engineered for competitive riders and enthusiasts seeking aggressive off-road performance. Its 95.4 kg weight, premium WP suspension with 300mm travel both ends, and high-spec braking system deliver sharp handling and control on technical terrain. Known for its potent power delivery and race-ready character, the 250 SX excels in sand, loam, and mixed track conditions.

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General information

CategoryCross / motocross
Year2017
ModelKTM 250 SX
 
 

Engine and Transmission Specifications

Driveline13:48. Primary drive: 26:72. 520 X-ring chain.
ClutchWet, DDS multi-disc clutch, Brembo hydraulics
Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
IgnitionContactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Fuel systemCarburettor. Mikuni TMX
Bore x Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Engine detailsReed intake.
Engine typeSingle cylinder, two-stroke
Capacity:249.00 ccm (15.19 cubic inches)

Brakes, suspension, Frame and wheels

WheelsCNC machined hubs. Excel rims. Wire spoked.
Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc. Two-piston calipers.
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc. Four-piston calipers.
Rear wheel travel300 mm (11.8 inches)
Rear SuspensionWP shock absorber with linkage
Front wheel travel300 mm (11.8 inches)
Front SuspensionWP USD closed cartridge Ø 48 mm
Rake (fork angle)26.5°
Frame typeChrome-molybdenum steel central-tube

Physical measures and capacities

Fuel capacity7.00 litres (1.85 gallons)
Wheelbase1,495 mm (58.9 inches)
Ground clearance385 mm (15.2 inches)
Seat height992 mm (39.1 inches) If adjustable, lowest setting.
Dry weight95.4 kg (210.3 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsOrange/white/black

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

2017 KTM 250 SX Rider Ergonomics Assessment

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

Feet:

At 992mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2017 KTM 250 SX, with a moderate knee angle of around 90 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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