752573 Fits 2018 to Present Milwaukee Eight Softail Includes Four L

For Softail owners running high-compression or high-output engines, the Sumax 409 Series spark plug wire sets provide the maximum spark needed for peak performance. These 10.4mm wires are engineered for the track but work perfectly on the street. They are constructed with a spiral-wound core and protected by three layers of silicone and a heat-treated fiberglass skin, offering a dielectric strength exceeding 100,000 volts. The Taylor Pro Boot is bonded directly to the wire to prevent moisture intrusion and ensure a solid connection. Sold as a set, these wires are a professional-grade solution for riders who refuse to compromise on ignition quality.