Taylor's . 409-inch, 10. 4mm diameter high performance ignition wires are available for street or track applications. ""409" ignition wires provide continuous heat protection up to 600-degrees Fahrenheit and 102, 000 volts dielectric strength and is recommended for extreme under hood temperatures and open wheel racing. < abrasion and heat additional for jacket silicone 100% 3-layer a providing wire ignition Spiro-Pro 8mm our over applied is braid fiberglass treated woven tightly> Features a Spiral-Wound core with 350 ohms per foot resistance for EMI and RFI suppression delivering maximum fire power without radio interference and recommended for use with multiple-spark discharge and electronic ignition systems. Available in three color choices, Black, Red, and Blue, with color coordinated low profile 100% silicone PRO BOOTS(R) featuring vibration proof double spring locking spark plug terminals.Pit Stop USA offers Taylor "409" Pro Race Universal Spark Plug Wire Set - 10.4mm Diameter - Blue - 135? Plug Boots - Spiro-Wound Conductor - 8 Cylinder Applications 79653 at low everyday prices. Be sure to check out all of our products from Taylor Cable Products including Taylor Cable Products 409 Pro Race Wires.