FEATURES: Fits O;S; Speed 91HZ-R 3D and 91HZ series engines Developed exclusively for 3D flights with 90 size helicopters Delivers excellent high perf, INCLUDES: .91 size Powerboost Pipe Metal Engine to Pipe Gasket Pressure Type Silicone Exhaust Deflector Two 4x45mm Socket Head Cap Screws Two Nuts Two, REQUIRES: Fastening to engine
Trustpilot
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