KTM 50 SX | 2025

WINNING STARTS HERE.

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
• Fuel-Mixture Generation: Dell'Orto PHBG 19 BS

CHASSIS

• Weight (without fuel): 42.5 kg
• Tank capacity (approx.): 2.3 l
• Wheelbase: 1026 mm
• 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
• Handlebar: Tapered aluminum Ø 28/22/18 mm
• Rear suspension: XACT WP mono shock
• Seat height: 653 mm
• Silencer: Aluminium
• Steering head angle: 66 °
• Rear Subframe Design: Steel
• Suspension travel (front): 200 mm
• Suspension travel (rear): 190 mm 
• Wheels: Spoked wheels with aluminium rims