Apply to 50 size helicopters, according to the strength character of 50 engine to design, features the highest air exhaust volume on the market.

Great design and test to three spaces: expansion chamber, accelerated section, silencer chamber, high efficiency and the quick respond of medium speed and high speed, great for 3D flying.

Pressure nipple x 1
Tube stopper x 1(Φ13xΦ16x18.5mm)
Exhaust guide x 1(Φ16.5x79.75mm)
Spacer x 2
Collar screw x 2(M3x35mm)
Spring Washer x 2