Replace your old RC helicopter engine with a brand new Thunder Tiger engine. At eHobbies, we have a unique selection of Thunder Tiger RC helicopter engines. Our current selection of helicopter engines includes the Pro 70H Ball Bearing helicopter engine, Pro 39H Ball Bearing helicopter, and the Pro 50H Ball Bearing Helicopter engine. These helicopter engines are meant for the more advanced hobbyist looking to upgrade their horsepower and efficiency. Thunder Tiger is a leading manufacturer of many types of RC products and they are known for their top quality, durability, and reliability. Start maximizing the performance of your RC helicopter with one of eHobbies’ Thunder Tiger helicopter engines.