Moroso 99-15 Harley-Davidson FXD/FXDWG Spiral Core Wire Set - Black

The spiral-wound core in these Moroso spark plug wires is made from a high-resistance conductor, which helps suppress radio frequency interference. This is important because RFI can mess with your bike's electronics, like the ignition system or any aftermarket accessories you might have. By keeping that interference down, you get a cleaner spark and a more consistent burn in your cylinders.

These wires are built with a black silicone jacket that's tough and can handle the heat under the hood. They're designed to fit right on your 1999-2015 Harley-Davidson FXD and FXDWG models, making them a straightforward replacement for your old, worn-out wires. A good spark plug wire set is key to making sure your engine runs smoothly and efficiently.