
SUMAX Pro Spark Plug Wires
In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
We accept many payment methods

In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
The Pro Spark Plug Wires are designed to enhance the performance of your Harley-Davidson motorcycle. They are precut and come with the plug/coil boots and terminals already installed for easy installation. The boots and wires are made from extra-high-temperature silicon, providing protection up to 600°F. Featuring a Spiro-Pro core, these wires offer up to 10 times the conductivity of standard carbon-core wires, ensuring optimal performance. With low resistance, they operate cooler and last three to four times longer than traditional carbon-core wires. Proudly made in the USA.
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We do not ship to the Canary Islands, Ceuta, or Melilla.
Shipping costs are calculated automatically at checkout based on destination and weight.
Free shipping may be offered for qualifying orders, as specified on our website.
Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.
If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.
In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.
To exercise this right, contact us via email or through our website, providing your order number and contact details.
If you want to return an item, please contact us first to give you detailed instructions.