The MSD 8.5mm Super Conductor is the ultimate performance wire! 

Its extremely low-resistance combined with the ability to suppress Electro Magnetic Interference is a combination that defies the common laws of physics.  Less resistance means more energy is going to make it to the spark plug to ignite the air/fuel mixture.  The Super Conductor uses a copper alloy conductor resulting in less than 50 ohms resistance per foot of wire!  This ensures that the most energy possible makes it to the spark plug.

This combination is encased in a heavy duty sleeve that will withstand abrasion and high temperatures.  Cap off each end with our Dual Crimp Terminals and you have the best wire available!

Electro Magnetic Interference (EMI) is a magnetic field that radiates from all spark plug wires.  This field can interfere with other electronic equipment such as rev limiters, ignitions, EFI systems and can even be heard through your speakers. 

The OEMs suppress EMI by having wires with extremely high resistance.  In racing applications, high resistance wires are not going to cut it.  To deliver low resistance with EMI suppression, MSD’s wires are helically wound.  By helically winding (sometimes called spiral wound) the conductor around a special center core, we are able to produce a highly effective choke to keep the EMI inside the wire and away from other important electronics. 

We go to great lengths to ensure that you get the best of both worlds with MSD wires.