2025 KTM 50SX

When the next step up is into the 50cc class, there is no better option than the most powerful 50cc out there. For 2025, the KTM 50 SX is built around an advanced steel frame, housing a powerful engine, a 35mm WP XACT AER fork, a WP XACT monoshock, and an advanced hydraulic Formula brake system. Simply put - it's the most advanced and READY TO RACE 50 cc mini-crosser available to your little racer.

ENGINE
TRANSMISSION Single-speed automatic
STARTER Kickstarter
STROKE 40.7 mm
BORE 39.5 mm
CLUTCH Centrifugal clutch (adjustable)
DISPLACEMENT 49.9 cm³
EMS Seletra 2p D36
DESIGN 1-cylinder, 2-stroke engine
CHASSIS
WEIGHT (WITHOUT FUEL) 42.5 kg
TANK CAPACITY (APPROX.) 2.3 l
FRONT BRAKE DISC DIAMETER 160 mm
REAR BRAKE DISC DIAMETER 160 mm
FRONT BRAKE Disc brake
REAR BRAKE Disc brake
CHAIN 415, Non-sealed
FRAME DESIGN Chrome-molybdenum steel central-tube frame
FRONT SUSPENSION XACT 35 WP Upside-Down fork, Ø 35 mm
GROUND CLEARANCE 233 mm
REAR SUSPENSION XACT WP mono shock
SEAT HEIGHT 653 mm
STEERING HEAD ANGLE 66 °
SUSPENSION TRAVEL (FRONT) 200 mm
SUSPENSION TRAVEL (REAR) 190 mm

D30702
stock kt
50 50sx 50-sx sx-50