
DRAG SPECIALTIES Spark Plug Wire — Manufacturer Reference: 16921040407
Designed for road and touring mounts, this set of DRAG SPECIALTIES spark plug wires features a robust silicone construction to meet the ignition demands of large single-cylinder and V-twin engines. The sheath, insulation, and inner tube made of silicone provide a certified Class E thermal rating according to SAE J2031: continuous use up to 450 °F (≈ 232 °C). Made in the USA, this set comes in black finish and has a wire diameter of 8.8 mm, suitable for standard harnesses of large touring bikes.
Ideal for riders looking for reliable wiring that can withstand high temperatures on their Road Glide or Street Glide, this wire meets thermal constraints and offers a discreet black aesthetic to blend with the custom look of large Harleys.