The 8.5mm wire has less than 50 ohms resistance per foot through the use of a special copper conductor. This conductor is wrapped very tightly around a ferro-magnetic impregnated cneter core which produces an extremely effective EMI suppression choke. This design ensures that optimum spark energy will reach the spark plugs while EMI noise is held within the wire where it cannot interfere with other electronics in you car.
The Super Conductor wire is truly a high performance wire from the inside out. The outer sleeve is a combination of silicone and synthetic material giving the wire supreme resistance against heat, chemicals and abrasion. Thick boots with 20% more material also help guard against spark arching to ground and special dual crimp terminals grip the conductor and the sleeve of the wire for a solid hold. These sets use factory style boots at the spark plug to ensure a correct fit.