Here’s another example of a lightweight, but strong upper shock mount on a race buggy. Relatively thin sheets of chromoly steel have been used to build boxed structures to support the upper shock ends. An added plate is used where the shock eyes are bolted to strengthen this high-stress area. Note also, the large cut hole has been cylindrically filled, providing more three-dimensional structure to the assembly. Lightweight, but super strong structures such as these are one reason that race vehicles are so pricey. It takes a skilled fabricator a good bit of time to build something like this.