This blue 8mm ignition wire set is ideal for both racing and street applications as it eliminates radio frequency interference. The silicone inner core and outer jacket keeps the wire flexible while maintaining its color for a custom look. The spiro-wound core consists of a resistor conductor spiral which provides more fire power and up to 10 times less resistance than standard resistor core wires. It comes with 135-degree boots, HEI distributor ends, and can withstand temperatures up to 600-degrees F.