Cusco aluminum upper spring seat sized for coil springs with a 65mm inner diameter and a 15.1mm center hole, intended to locate and support the top of compatible coil springs. The machined aluminum seat provides a precision fit for suspension assemblies that accept 65mm ID springs, offering a clean interface between the spring and its mounting point in coilover-style setups.
Cusco Aluminum Upper Seat for 65mm ID Coil Spring - Center Hole ID 15.1mm