- New design high performance muffler for the OS GT15
- Increases performance over standard OS muffler
- High quality all aluminum design
- Includes all mounting hardware
- Perfect match for the Gas Powered Helicopters GT15 Sport Edition engine!
New! Muffler Studio GPH-320 muffler for Zenoah/CY RC format engines
-More power output than the MS260
-Exclusively from Gas Powered Helicopters!