The Super Ignition coil Schwarz 4.7 Ohm for Harley Davidson Sports Models from 1965 to 1979 has been specially developed to significantly improve the ignition performance. This high -performance ignition coil offers an ignition voltage increased by up to 67% compared to standard ignition coils. The result is an optimized engine output and a smooth run of the engine. In addition, users benefit from improved starting behavior and increased acceleration, especially at higher speeds.