This is a used heat shield that was made by Advance Thermal Products for Brocks Sidewinder 4:2:1 headers (SKU:397736). Custom made for a F1000 Sthor race car with the ZX10R 2016 and newer engine.
You see some discoloration but is in good condition and will last for a long time.
Managing heat is key to strong performance and reliability. ATP builds custom heat shields using space age Inconel metals. We highly recommend ATP for your race car. Use NMS21 and save 5% when placing an order.