Swingarm Nut with Anti-Rotation Lock for KTM 50 SX - 45404038000

This is an OEM nut with anti-rotation lock used in the swingarm assembly. It secures components reliably and prevents loosening during off-road use. Direct replacement for KTM, Husqvarna, and GASGAS 50cc models.

Compatible with 2024 KTM SX-E 3/5 (EU), Husqvarna EE 3/5 (EU), GASGAS MC-E 3/5; 2023-2009 KTM 50 SX/SX Mini/SX Factory Edition/SX-E 5 (EU/US), Husqvarna TC 50/EE 5/TC 50 Mini (EU), GASGAS MC 50/MC-E 3/5 (EU). Fits all listed 50cc mini and electric models from 2011-2024, including 2010-2009 variants like KTM 50 SX Junior.

Made to OEM specifications for precise fit and durability. The anti-rotation lock ensures stability under high vibration conditions typical in motocross riding.

Installation requires standard tools; torque to manufacturer specs for safety. Inspect swingarm bearings during replacement.

Check compatibility list below to see if this part fits your motorcycle model.