JBA PowerCables ignition wires provide less than half the resistance of most factory wires freeing spark energy and increasing performance 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 Electromagnetic Interference suppression (EMI). Why put old ignition wires on your new JBA equipped engine Add JBA PowerCables for the best performance and reliability.