KTM 250 SX - 2025 Specifications and Reviews The 2025 KTM 250 SX is a lightweight two-stroke motocross bike engineered for intermediate to advanced riders seeking competitive performance. Powered by a 249cc reed-valve engine with modern Keihin fuel injection, it delivers sharp power delivery ideal for both training and racing. Known for its agile handling and proven reliability, the 250 SX excels in motocross competition and high-speed off-road riding.
Color Options Orange/black/grey Category Cross / motocross Model KTM 250 SX
Engine and Transmission Specifications Starting Electric Clutch Wet, DDS multi-disc clutch, Brembo hydraulics Final Drive Chain (final drive) Gearbox 5-speed Cooling System Liquid Ignition Vitesco Technologies EMS Induction Injection. Keihin EFI, throttle body 39 mm Bore x Stroke 66.4 x 72.0 mm (2.6 x 2.8 inches) Engine Details Reed intake Capacity: 249.0 ccm (15.19 cubic inches) Physical measures and capacities Fuel Capacity 7.20 litres (1.90 US gallons) Wheelbase 1495 mm (58.9 inches) Ground Clearance 354 mm (13.9 inches) Seat Height 958 mm (37.7 inches) If adjustable, lowest setting. Dry Weight 99.4 kg (219.1 pounds) KTM 250 SX dimensions and frame Wheels Spoked wheels with aluminium rims Rear Brakes Single disc Brake Disc Diameter 220 mm (8.7 inches) Front Brakes Single disc Rear Tyre 110/90-19 Front Tyre 80/100-21 Rear Wheel Travel 300 mm (11.8 inches) Rear Suspension WP XACT Monoshock with linkage Front Wheel Travel 310 mm (12.2 inches) Front Suspension WP XACT-USD (AER), Ø 48 mm Frame Central double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe. Other specs Maintenance Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. Insurance costs Compare US insurance quotes from the nation's top providers. Update specs Report missing specs or required updates. Rake (fork angle) 26.1° Exhaust system Aluminum Driveline 520, Non-sealed chain. Engine type Single cylinder, two-stroke Year 2025
Rider Fit Visualizer
Calculated in your browser only - your height/inseam are never sent to our servers.
Feet:
On the ground
On the pegs
At 958mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with cannot reach comfortably on the 2025 KTM 250 SX, 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.
Find bikes that fit your height →
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