105 Factory BIG BORE Kit 2025-2026, A41549905044 KTM SX85 HUS TC85 GASGAS MC85

  
105 Factory Big Bore Kit. (also known as the 105 SXS Kit). It is a performance engine upgrade designed for 2025 and 2026 85cc motocross models from the KTM group. This kit is exclusively compatible with.

It fits both "Small Wheel" (17/14) and "Big Wheel" (19/16) variations of the following bikes. The kit increases the engine's displacement to provide significantly more torque and peak power, making it ideal for larger track layouts. Cylinder head and combustion chamber insert.

CDI control unit (specifically tuned for the 105cc configuration). Primarily used by riders transitioning between the 85cc and 125cc classes or those looking for a competitive edge in open 85cc/Supermini divisions. Official kits often include or recommend specific carb settings or digital mapping (via the included CDI) to handle the increased fuel/air requirements. We typically never leave low feedback, and would appreciate the same in return. Once it leaves our Business, we can only see the same tracking info you can.