Moroso 78-15 Harley-Davidson Universal Ultra 40 Wire Set

If you're working on the ignition system for your Harley-Davidson from 1978 to 2015, a good set of spark plug wires makes a difference. These Ultra 40 wire sets from Moroso are built to handle the demands of a motorcycle engine, ensuring a strong spark gets to your plugs. They're a well-built replacement for worn-out or underperforming stock wires.

Moroso uses a solid conductor core with a high-resistance jacket to help suppress radio frequency interference, which can clean up your electrical system. The 40-ohm resistance per foot is a popular choice for many Harley applications, balancing spark energy with RFI suppression. You'll need to cut these wires to the correct length for your specific bike and crimp on your own terminals, so have a wire stripper and crimper handy.