Hirobo Shuttle Challenge Set R/C Helicopter ARF w/Motor . New-Old-Stock set. This is a ARF so it was built by the Factory, including new Enya 35 Heli engine installed with muffler. All paperwork, main blades and Training gear included. A real nice Set to get into R/C Helicopters. Just add your electronics, set-up and fly. Gyro not included.