Sumax 10.4 mm Pro Spark Plug Wires for ’18-21 Harley Davidson Softail Models – Blue (Check Fitment)

Description

Sumax 10.4 mm Pro Spark Plug Wires for ’18-21 Harley Davidson Softail Models – Blue

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