.55 HZ-H Hyper Ringed Competition Helicopter Engine by O.S.
This is the O.S. 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor. The O. S. 55HZ-H Hyper Ringed Heli engine is cause to rejoice for 3D heli flyers! The 55-HZ-H Hyper Ringed engine cranks out optimum power with a minimum of space!
This product was added to our catalog on December 4, 2009