Engines & Accessories

.91 size Powerboost Pipe from O.S. Engines.FEATURES: Fits O.S. Speed 91HZ-R 3D and 91HZ series engines          Developed exclusively for 3D flights with 90 size...

Key Features Fits common and popular 50-size helis on the market Designed to be the most powerful in its class Incorporates SetRight™ needle valve assembly Piston/liner made of unique combination of ABC Uniquely...

These screws are used for mounting the Scorpion HK-22mm and 30mm series helicopter motors. Included in this kit are two 3x0.5x6mm socket head screws and two matching flat washers. The flat washers have an outside diameter of 6.75mm and are 0.65mm thick...