These 500 class canopy spinners are a good replacement for your 500 class Helicopter
500 Class DFC Main Rotor Head Assembly
500 Class Metal Tail Holder & Rotor Assembly (Torque Tube Version)
500 Class Drive Gear Set
500 Class Plastic Tail Blade (76mm from bolt hole)
500 Class Flybar Head Linkage Rod set
500 Class Landing Skid