Integrated Engineering valve Guides are the performance option for replacing factory guides for new valves. In performance head builds, factory guides are prone to excessive wear resulting in premature valve failures. To combat these issues our valve guides are made from a specialized alloy on our in house CNC lathe with ultra high concentricity for exact valve placement and precise dimensions. Using a proprietary bronze alloy results in faster heat dissipation where thermal conductivity is increased by 10% and extends valve life, guide life, and cylinder head component life. For added performance, these valve guides have been designed with an aerodynamic tip designed to cut down on airflow restrictions in the valve port.