2027 KTM 125 SX

The 2027 KTM 125 SX is the ultimate machine for riders stepping into the full-size 2-stroke class. Updated power delivery, refined chassis, and premium WP XACT suspension make it a serious contender on any track.

• New colorway and graphics that double-down on unmistakable KTM orange, with a dash of red.
• Updated powerpack complies with the latest AMA and FIM sound requirements.   
• Chromoly steel frame blends comfort and control. 
• Hollow, die-cast swingarm offers minimal unsprung weight and perfect rigidity. 
• WP XACT fork with AER technology gives a wide range of adjustability and unmatched bottoming resistance.
• Fully-Adjustable WP XACT rear shock with linkage is perfectly balanced to the front fork. 
• Compact, powerful engine with electronic power valve offers crisp, responsive power.
• 39 mm Keihin throttle body features advanced EFI technology for immediate throttle response. 
• Electric start and lightweight Li-Ion battery provide immediate starts at a touch.
• Hybrid polyamide and aluminum subframe.   
• Map select switch changes engine character depending on track conditions and rider preference.
• Hydraulic Brembo clutch system offers highly controllable modulation and light operation.
• High-tech Brembo brakes combined with lightweight wave discs offer incredible braking power and feel.
• CNC machined hubs and high-end Excel rims combine unmatched performance and durability with massive weight savings.
• Large, die-cast foot pegs deliver confidence, comfort, and control.

Technical Specifications

Engine

Chassis & Brakes