238519 Fits 1986 1998 Touring 1986 2003 Sportster Except 1998 2003

These Sumax 409 Series spark plug wires are built for riders who need professional race-grade performance on their Sportster or Touring bike. Sold as a set, these 10.4mm wires are significantly thicker than standard leads, offering a dielectric strength of over 100,000 volts. The construction includes three layers of silicone and a heat-treated fiberglass skin, ensuring they can handle the high-heat environment of a performance V-twin. The spiral-wound core is paired with Taylor Pro Boots that are bonded directly to the wire for a secure, high-conductivity connection. Whether you are hitting the track or just want the best for your street build, these wires provide the maximum spark required for high-performance engine setups and fit Sportster and Touring models.