This aluminum upper main frame by Align is designed for the T-Rex 450 helicopter model. The gray/grey color gives it a sleek and professional look. It is made with high-quality materials to ensure durability and longevity.

This part is compatible with other 450-size helicopter models and is perfect for those looking to replace a damaged or worn-out main frame. Align is a trusted brand in the RC model industry and this product is a testament to their commitment to excellence.