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.

Suitable for 50H,55H engine.

Size:F41.2 x 270 x 70.5mm

Weight:147g

Accessories:

Muffler Spacer x1

Muffler x1

Pressure nipple x1

Pressure nipple Spacer x1

Tube stopper x1(F13xF16x18.5mm)

exhaust guide x1(F16.5x79.75mm)

Spacer x2

Collar screw x2(M3x35mm)

Spring Washer x2