JBA PowerCables ignition wires are less than half the resistance of most factory wires, which frees spark energy and increases performance! Get as much as 5+ hp gain with JBA PowerCables. They feature 100% silicone jackets and unique boot ends designed for maximum clearance and long life for severe duty applications. These heavy duty ignition wires come standard with wire-wound mag conductors for superior Electro Magnetic Interference suppression (EMI).