The new RCT-450 G-Head is not just a replacement rotor head assembly for the Sky-Shark; it is also a great CNC rotor head upgrade option for many compatible 450 class helicopters like the TREX and MX-400. Precision engineered and manufactured in with the best aviation grade aluminum, there is no better high performance rotor head value on the market available today. The G-Head assembly includes everything shown in the picture plus a replacement flybar rod.