Powerful Spark Plug Wires

The extra insulation in Moroso Ultra 40 Race Spark Plug Wires protects against exhaust header heat, chaffing and contaminants to extend the life of the wire. Closely-woven fiberglass that is impregnated with high-voltage, leak-resistant silicone, adds up to 8,000 volts of extra insulation. At 40 ohms of resistance per foot, the Ultra 40 Spark Plug Wire incorporates a spiral-wound nickel/copper alloy conductor wrapped at the optimum ratio to produce the highest level of spark energy, while producing the lowest level of electromagnetic and radio frequency interference. The Kevlar core is four times stronger than other aramid fiber cores, resulting in exceptional dielectric strength for the highest spark energy transfer. EMI/RFI suppression. and horsepower gains.