The ignition coils Dual Tower Schwarz 5 Ohm Dual Fire for Harley Davidson Fl Shovel [1970-1984] of brands are high-performance components in the USA, which were specially developed for optimizing ignition efficiency. These coils offer a high spark voltage of over 30,000 volts, which ensures improved ignition ability and engine power. They are compatible with most original equipment and retrofitted electronic and contact -based ignition systems.