Polished Tuned Muffler and Header Set for Raptor and other plastic frame helicopters. - Fits NovaRossi REX R57HR3D and R57HR3DS Helicopter Engines.
Combination kit includes tuned pipe and manifold for 50 class Heli engines. Specific for Raptor Frame or other plastic frames. - The pipe includes silicone anti vibration mounting supports. The pipe is designed around the Novarossi VRS (Volume Resonance System) which provides 3 expansion chambers for tuned pipe performance. Practical RPM range is 17,500.