9mm Fire Power spark plug wire set. Black/silver

4-wire set. Includes one 34" 90° plug & 135° coil + one 30.5" 90° plug & 135° coil (front) + one 18" 90° plug & 135° coil + one 17.25" 90° plug & 135° coil (rear). Compatible with all H-D ignition systems, both points and electronic. The 9mm Fire Power wires come with the core of the ThunderVolts, according to Taylor these are the best wires money can buy. The 25 ohm/ft. ferrite spiral core is made with a blend of copper nickel alloy which is bonded by a conductive acrylic cover. Taylor claims more horsepower, more torque and better mileage. With the silver metallic plug boots styled after a 9mm pistol it gives a very distinctive look.