Sumax 10.4 mm Pro Spark Plug Wires for '18-21 Harley Davidson Softail Models - Black
Same features as the Sumax 8mm wires but larger (10.4mm) for that fat look.
- Precut SILICONE construction and has the plug/coil boots and terminals already installed
- Boots and wires are made from extra-high-temperature silicon, which gives protection up to 600°F
- Spiro-Pro core provides up to 10 times the conductivity of a standard carbon-core wire
- Low resistance means they run cooler and last three to four times longer than carbon-core wires
- Made in the U.S.A.
Fitments
NOT FOR FOR 18-20 FXBR/​FXBRS MODELS
| 2021 | Harley-Davidson | Softail Standard FXST |
| 2021 | Harley-Davidson | Softail Street Bob FXBB |
| 2020-2021 | Harley-Davidson | Softail Low Rider S FXLRS |
| 2020 | Harley-Davidson | Softail Standard FXST |
| 2019-2020 | Harley-Davidson | FXDR 114 |
| 2018-2021 | Harley-Davidson | Softail Fat Bob 114 FXFBS |
| 2018-2021 | Harley-Davidson | Softail Slim FLSL |
| 2018-2021 | Harley-Davidson | Softail Heritage Classic 114 FLHCS |
| 2018-2021 | Harley-Davidson | Softail Heritage Classic FLHC |
| 2018-2021 | Harley-Davidson | Softail Sport Glide FLSB |
| 2018-2021 | Harley-Davidson | Softail Fat Boy 114 FLFBS |
| 2018-2020 | Harley-Davidson | Softail Street Bob FXBB |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB |
