The best spark plug wires available. QuickCar has the answer to more spark energy! The new wire features an 8mm wire, with heat sleeve for a 11.5mm total O.D.,and is under 40 ohm/ft. resistance. QuickCar Sleeved Race Wire has a very quick spark energy transfer while also providing a very high Electro Magnetic (EMI) and Radio Frequency Interference (RFI) suppression. Constructed using two layers of the purest silicone available, the Kevlar core center and nickel-copper alloy wound conductor provides a very flexible, high-tensile strength spark plug wire that improves engine horsepower, torque, and fuel efficiency.