ACCEL's Extreme 9000 ceramic wire sets make burnt plug-wire boots a thing of the past. Not enough room in your engine bay? Not enough room to work around your headers? No problem ? the ceramic boots on the spark plug end of these specially designed wire kits withstand temperatures up to 2;000 degrees Fahrenheit. The ceramic coating acts as a heat mirror; reflecting infrared energy and heat away from the plug boot; and it's engineered to resist flaking and peeling. 8mm Ferro-Spiral core double-silicone wires deliver maximum energy to the spark plugs with built-in RFI/EMI suppression for street-driven vehicles. Already cut to factory length; these ultra-high temperature wires are rated at 600 degrees Fahrenheit; have 500-Ohms/ft. resistance; feature stainless-steel terminals; and come with 90-degree ceramic boots. Ceramic boots withstand temperatures up to 2000 degrees Fahrenheit Eliminates burned or melted plug wires Reflects heat away from the plug boot with no flaking or peeling Wires are rated at 600 degrees Fahrenheit and come already cut to factory length Comes with 90 degree ceramic boots