The GPM SLAM063FR shocks are CNC oriented alloy dampers designed to enhance chassis response on the Traxxas Mini Slash. Bodies are 6061-T6 alloy for improved strength and heat resistance, and the internal chambers are filled with 1000cSt silicone oil to provide consistent damping and reduced friction under repeated cycles. Progressive springs deliver a variable rate so spring stiffness rises with increasing load, allowing tuners to match the spring curve to track conditions and driving style.