The O.S. 77 VR Ducted Fan RC Engine is a high-quality 2-stroke engine designed for ducted fan use or to spin small props at very high RPMs (est. ~20,000 plus RMPs). It has great horsepower and has a small round head - this is a rare collector's engine and not as common as the large head version. It is also lighter in weight than the large head DF and can fit into small cowls. What you see is what you will get. Shipping will be $13.00 using USPS Ground Advantage.
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