The upcoming KTM 250 SX 2026 is shaping up to be one of the most anticipated two-stroke motocross bikes in recent years, continuing KTM's legacy of innovation, power, and agility in the dirt bike scene. Building on the solid foundation of its predecessors, the 2026 model is rumored to feature significant enhancements across performance, handling, and tech integration. At the heart of the 250 SX remains its renowned 250cc two-stroke engine, known for its razor-sharp throttle response and explosive mid-range power, but this time around, KTM is expected to refine the fuel injection system further, offering even smoother delivery, improved fuel efficiency, and reduced emissions — keeping it competitive in a world shifting towards cleaner technology. The chassis will likely benefit from updates to the WP XACT suspension setup, possibly with a new frame geometry aimed at improving rider ergonomics, cornering stability, and weight distribution. KTM may also shave off a few extra pounds thanks to lighter materials and revised bodywork, which could contribute to even better flickability and control on the track. There’s buzz about a more advanced electronics suite as well, potentially including selectable power maps, a new traction control setting, and enhanced launch control — features once reserved for four-strokes, now becoming commonplace in high-end two-strokes.
Brand |
KTM |
Model |
250 SX 2026 |
Status |
Coming soon |
Release Date |
2025 |
Engine |
|
Transmission |
5-speed |
Starter |
Electric starter |
Bore × Stroke |
66.4 mm × 72 mm |
Clutch |
Wet, DDS multi-disc clutch, Brembo hydraulics |
Displacement |
249.9 cm³ |
EMS |
Keihin EMS |
Engine |
1-cylinder, 2-stroke engine |
Chassis |
|
Weight (without fuel) |
95.5 kg |
Tank capacity (approx.) |
7.5 l |
Front brake |
disc |
diameter |
260 mm |
Rear brake |
disc |
diameter |
220 mm |
Front brake |
Disc brake |
Rear brake |
Disc brake |
Chain |
5/8 x 1/4" |
Frame design |
Central double-cradle-type 25CrMo4 steel |
Front suspension |
WP XACT-USD, Ø 48 mm |
Ground clearance |
370 mm |
Rear suspension |
WP XACT Monoshock with linkage |
Seat height |
950 mm |
Steering head angle |
63.9° |
Suspension travel (front) |
310 mm |
Suspension travel (rear) |
300 mm |
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