125 SX

KTM · 2 model years · 2025–2026

Model Years

2026 125 SX

Seat: 958 mm

The 2026 KTM 125 SX is a lightweight 2-stroke motocross bike engineered for young and amateur riders seeking competitive performance. Featuring a sharp 124.8cc engine with EFI and …

2025 125 SX

Power: 15.0 HP (10.9 kW)) Weight: 92.4 kg (203.7 pounds) Seat: 958 mm (37.7 inches) If adjustable, lowest setting.

The 2025 KTM 125 SX is a lightweight two-stroke offroad machine designed for young riders and beginners entering competitive motocross. Known for its agile handling and responsive …

Spec Comparison by Year