Improves overall performance including starting, stops high-speed misfires and increases mileage Peak spark voltage increases by at least 20% 30,000 V output - Harley-Davidson Softail Deluxe FLDE (2018, 2019, 2020); Harley-Davidson Softail Fat Boy FLFB (2019, 2018); Harley-Davidson FXDR 114 (2019, 2020); Harley-Davidson Softail Low Rider FXLR (2018, 2020, 2019); Harley-Davidson Softail Slim FLSL (2020, 2019, 2018); Harley-Davidson Softail Breakout FXBR (2019, 2018); Harley-Davidson Softail Fat Bob 114 FXFBS (2020, 2018, 2019); Harley-Davidson Softail Heritage Classic FLHC (2018, 2019, 2020); Harley-Davidson Softail Heritage Classic 114 FLHCS (2020, 2019, 2018); Harley-Davidson Softail Fat Bob FXFB (2019, 2018); Harley-Davidson Softail Sport Glide FLSB (2018, 2019, 2020); Harley-Davidson Softail Breakout 114 FXBRS (2019, 2018, 2020); Harley-Davidson Softail Fat Boy 114 FLFBS (2018, 2020, 2019); Harley-Davidson Softail Low Rider S FXLRS (2020); Harley-Davidson Softail Street Bob FXBB (2018, 2020, 2019)