Twin Power Black Ignition Wire Set For Harley Features: V-Twin motorcycles are the heart and soul of America's motorcycle industry. There's no better way of showing the pride you put into your motorcycle than by using American made parts. Twin Power ignition leads are 8.65 mm thick with 500 Ohms/ft. of resistance The core of these leads are made with Kevlar reinforced by fiberglass strands for additional strength Only mag wire is used to ensure conductivity and elimination of RFI (radio frequency interference) and noise suppression The core is then covered by a layer of Epdm with a layer of braided tape for strength and flexibility The outer jacket protecting the mag wire core is a high quality silicone to ensure heat resistance is maximized, extending the longevity of the wire set Silicone distributor and spark plug boots are used to help dissipate the heat Stainless steel terminals are used to reduce potential corrosion Each ignition lead is built with SAE J2031 class E rated cable for heat protection of 4500 Each wire set includes a packet of dielectric grease to prevent arcing, keep moisture out, and prevent corrosion Each wire set includes two miniature cable ties Made in the USA