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
- TransmissionSingle-speed automatic
- StarterKickstarter
- Stroke40.7 mm
- Bore39.5 mm
- ClutchCentrifugal clutch (adjustable)
- Displacement49.9 cm³
- EMSSeletra 2p D36
- Design1-cylinder, 2-stroke engine
- Fuel-mixture generationDell'Orto PHBG 19 BS
Chassis
- Weight (without fuel)42.5 kg
- Tank capacity (approx.)2.3 l
- Wheelbase1026 mm
- Front brake disc diameter160 mm
- Rear brake disc diameter160 mm
- Front brakeDisc brake
- Rear brakeDisc brake
- Chain415, Non-sealed
- Frame designChrome-molybdenum steel central-tube frame
- Front suspensionXACT 35 WP Upside-Down fork, Ø 35 mm
- Ground clearance233 mm
- HandlebarTapered aluminum Ø 28/22/18 mm
- Rear suspensionXACT WP mono shock
- Seat height653 mm
- SilencerAluminium
- Steering head angle66 °
- Rear subframe designSteel
- Suspension travel (front)200 mm
- Suspension travel (rear)190 mm
- WheelsSpoked wheels with aluminum rims
