Motorhomes need all the spark they can get and MSD offers several sets of the 8.5mm Super Conductor wire sets for common motorhome engines. The 8.5mm wire features the lowest resistance available of any helically-wound wire which ensures that more spark makes it to the cylinder to burn the fuel completely. The outer sleeve of the Super Conductor is just as strong as the wire itself. A propriety combination of silicone and syn­thetic material produce a tough, heat-resistant sleeve.