LET THE SPARKS FLY!
Sumax Classic Thunder 7mm Plug Wires
Keeping up with standard maintenance is an essential part of motorcycle ownership. Spark plugs are a part of the standard maintenance category.
We needed to replace our spark plugs (H-D part #6R12, $4.95/piece) on our 2012 Road King project bike, and while we were in there we thought why not upgrade the spark plug wires? We decided to run a set from Sumax, the Classic Thunder Braided Cloth Wires (part #C20236, $39.95/ set). These are 7mm black silicone with synthetic jacketing and resist heat, oil, and abrasion. A combination Kevlar helically spiral wound core at 350-ohm-per-foot resistance delivers greater spark energy while improving power, idle, and fuel efficiency.
For a low price, you can improve in multiple categories: power, fuel efficiency, and aesthetics. We went with the red with black tracer colors to match our bike, but they have a handful of other color options to choose from. Follow along as we install our Sumax Spark Plug Wires on our Road King.
Our 7mm red-and-black tracer spark plug wires from Sumax ready to be installed along with a new stock set of plugs from H-D.
With the new plugs torqued down to 14 pound-feet, we installed the new Classic Thunder plug wires onto the ignition coil and the spark plugs. In less than five minutes our job was done and we were ready to enjoy the benefits of our fresh plugs and upgraded plug wires.
First things first we removed the boots from the old spark plugs and removed the other end of the wires from the ignition coil and discarded the old plug wires.
With the old plug wires removed and out of the way, we went ahead and removed the two spark plugs using a 5/8-inch spark plug socket.
We used a bit of anti-seize on the new plugs’ threads and installed into the heads.