Funtech 3D HN55 Muffler for OS-YS 50-55 Class engines #FT-B320

The FunTech HN-55 Type 3D muffler can be used with 50-55 class helicopter engine, designed to maintain the torque and rotational speed of the engine for those who wants to have very consistent and high speed especially for a 3D flight.

Fits OS-YS 50-55