Race Spark Plug Wire Set - Extreme 9000 Ceramic Boot - LS Terminals LS3/LS4/LS7ACCEL Extreme 9000 Ceramic Boot Wires feature ultra high temperature, double silicone, 8mm, 500 ohms ft Ferro Spiral core wire developed for performance use. The wire is rated at 600 degrees Fahrenheit peak and the Ceramic boots withstand up to 2,000 degrees. These race wires also feature Mr. Gasket Inferno Shield Thermal Sleeving to increase the heat resistance of the wire to 1200 degrees Fahrenheit. The Inferno shield is held in place with a high