Ktm Sx 250
The Ktm Sx 250 has a top speed of Approx. 110–120 km/h (note: estimate; top speed is limited in motocross use and varies by gearing), produces Approx. 46–49 hp and weighs Approx. 102 kg. Motoryk rates it 8.5/10.
La KTM 250 SX es una moto de motocross de dos tiempos que ha sido la piedra angular de la gama todoterreno de KTM desde principios de la década de 1990, evolucionando continuamente a lo largo de décadas de desarrollo en las carreras de fábrica. Ganó una considerable credibilidad gracias a sus numerosas victorias en campeonatos del mundo de motocross y se convirtió en un referente en la categoría de motocross de dos tiempos y 250 cc por su potencia y maniobrabilidad. El modelo es famoso tanto entre los pilotos aficionados como entre los profesionales por sus agresivas características de potencia y su chasis ligero, que mantienen viva la tradición del motocross de dos tiempos en una era cada vez más dominada por los cuatro tiempos.
Approx. 46–49 hp
Potencia
Approx. 42–45 Nm
Torsión
Approx. 102 kg
Peso
Approx. 110–120 km/h (note: estimate; top speed is limited in motocross use and varies by gearing)
Velocidad máxima
Estimated 6–9 L/100km depending on riding intensity (note: highly variable in off-road/motocross use)
Combustible
Desnudo
Cuerpo
Video Review
Lo que los compradores deben saber
High Maintenance Demands
The KTM SX 250 is a high-performance 2-stroke that requires top-end rebuilds every 25-40 hours of riding. Always ask the seller for a maintenance log and when the last piston/ring replacement was done.
Strong Resale Value
KTM SX models hold their value well compared to Japanese competitors, often retaining 70-80% of market value after one season if properly maintained. Orange bikes have a loyal buyer base that keeps demand high.
Watch the Power Valve
The BOING power valve system is a known wear point — a sticky or dirty power valve causes noticeable power loss and flat mid-range response. Budget for cleaning or replacement if buying used.
Reseña de un comprador usado
"A brilliant, brutal machine that rewards preparation and punishes neglect."
$3,500-$6,500 usedThe KTM 250 SX is a proper weapon — KTM's two-stroke motocross flagship hasn't changed its aggressive personality across generations. That's exactly the problem and the appeal. Buy a neglected one and you're inheriting someone else's mechanical disaster; buy a well-kept example and you've got one of the sharpest 250s ever bolted together. The WP suspension is genuinely excellent when serviced, and that Kokusan-ignitioned motor rips with an urgency that'll embarrass plenty of 450s through the mid-range. It's addictive. Here's the honest part: two-strokes demand maintenance discipline. Check the powervalve — they gum up and owners ignore them. Pull the pipe and inspect the piston before handing over cash. Top-end rebuilds are cheap if you do them yourself, expensive if you've been neglecting intervals. Anything post-2019 benefits from the revised frame geometry, which calmed the notoriously twitchy handling without killing the fun. Under $4,000 you're gambling; spend a bit more for a documented, recent-season bike.
Top 10 Accessories
Curated picks for the Ktm Sx 250 — owned, ridden, recommended.
Problemas comunes
🔥 2 CRITICALCompression test, pull plug, look for scoring
Inspect reeds for cracks or warping visually
Remove cover, check valve moves freely by hand
Run through all gears, listen for grinding or jumping
✅Lista de verificación previa a la compra
Reliable if maintained, expensive when neglected
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Ktm Sx 250
Kawasaki Kx 250
Suzuki Rm-z250
Husqvarna Te 300
Gas Gas Ec 300
Gas Gas Ec 250
Compare Ktm Sx 250 Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Ktm Sx 250 vs Kawasaki Kx 250
Specs · Power · Buyer verdict
Ktm Sx 250 vs Suzuki Rm-z250
Specs · Power · Buyer verdict
Ktm Sx 250 vs Husqvarna Te 300
Specs · Power · Buyer verdict
Ktm Sx 250 vs Gas Gas Ec 300
Specs · Power · Buyer verdict
Ktm Sx 250 vs Gas Gas Ec 250
Specs · Power · Buyer verdict
More Ktm Sx 250 Guides
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View all Ktm models →Community Reviews
Discussion
Frequently Asked Questions
What are common problems with the Ktm Sx 250? +
Worn or seized top end (piston/rings): Compression test, pull plug, look for scoring (serious) | Reed valve wear causes poor low-end power: Inspect reeds for cracks or warping visually (moderate) | Power valve stuck or carboned up: Remove cover, check valve moves freely by hand (moderate)
Is the Ktm Sx 250 a good motorcycle? +
A brilliant, brutal machine that rewards preparation and punishes neglect. Rating: 8.5/10. Best for: Experienced mx riders wanting serious competitive edge. Avoid if: You want low-maintenance weekend trail riding.
What is the horsepower of the Ktm Sx 250? +
The Ktm Sx 250 produces Approx. 46–49 hp @ 9,000–10,000 rpm (note: estimate based on recent model years; KTM does not always publish official figures), with Approx. 42–45 Nm @ 8,000–9,000 rpm (note: estimate; official figures not consistently published) of torque. Top speed: Approx. 110–120 km/h (note: estimate; top speed is limited in motocross use and varies by gearing).
Is the Ktm Sx 250 good for beginners? +
Not really — the Ktm Sx 250 is better for experienced riders. Experienced mx riders wanting serious competitive edge Avoid if: You want low-maintenance weekend trail riding
Is the Ktm Sx 250 reliable? +
Owners report 2 critical issues to watch for on the Ktm Sx 250, notably: Worn or seized top end (piston/rings) (Compression test, pull plug, look for scoring). Buy with a pre-purchase inspection.
Is the Ktm Sx 250 good for daily use? +
Experienced mx riders wanting serious competitive edge Fuel: Estimated 6–9 L/100km depending on riding intensity (note: highly variable in off-road/motocross use).
How fast is the Ktm Sx 250? +
The Ktm Sx 250 reaches a top speed of Approx. 110–120 km/h (note: estimate; top speed is limited in motocross use and varies by gearing). Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Ktm Sx 250? +
Motoryk has curated a Top 10 gear list specifically for the Ktm Sx 250, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/ktm/sx-250/top10. Each pick is matched to this bike's spec.
