The Accel 8mm Super Stock Graphite Custom Wire Set is a true performance upgrade replacement for Original Equipment types. Racing experience leads the way in its development of superstock equipment for engine. Silicone boots with yellow wire and zinc-plated steel terminals. The 450 degrees Fahrenheit rated silicone jacket is extruded over a tightly woven, rugged fiberglass braid. The braid is applied over high dielectric strength Ethylene Propylene Diene Monomer inner insulation, for ignition wire performance that exceeds SAE specifications.