![SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/8mm-pro-spark-plug-wires-m8-812170.png?v=1681595354&width=1054)
![SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/8mm-pro-spark-plug-wires-m8-465029.png?v=1681595354&width=1054)
![SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/8mm-pro-spark-plug-wires-m8-166712.png?v=1681595354&width=1054)
8mm Pro Spark Plug Wires / M8
Tax excluded. Shipping calculated at checkout
- Fits 18 - 21 Softail Models
- Precut and have 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.
Choose options
![SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/8mm-pro-spark-plug-wires-m8-812170.png?v=1681595354&width=1054)
![SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/8mm-pro-spark-plug-wires-m8-465029.png?v=1681595354&width=1054)
![SUMAX-8mm Pro Spark Plug Wires / M8-Spark Plug Wires-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/8mm-pro-spark-plug-wires-m8-166712.png?v=1681595354&width=1054)
8mm Pro Spark Plug Wires / M8
Sale price$66.95 USD
Regular price