Twin Power 80-84 Big Twin and XL Ignition Coil Black Replaces H-D 31609-80 4 Ohm Original StyleTwin Power coils are high quality direct fit with at least 20% more voltage than stock. Our 12 Volt high performance coil features special heat resistant construction. These high voltage replacement style coils deliver 35,000 Volts and are designed to handle the high RPMs you throw at them This Part Fits: Year Make Model Submodel 1980 1984 Harley Davidson FLHS Electra Glide Sport Base 1983 1984 Harley Davidson FLHTC Electra Glide Classic Base 1980