SUMAX Spark Plug Wires - Red - FLT 20233

If you're running a high-performance ignition system, your spark plug wires are just as critical as the plugs themselves. SUMAX's Spiro-Pro core delivers superior conductivity that reduces electrical resistance, keeping your ignition cooler and more reliable under sustained engine load. That durability translates to 3-4x longer service life compared to standard carbon-core alternatives—a real advantage whether you're on the track or putting in seat time at the strip.

Built with extra-high-temperature silicone boots rated to 600°F, these precut wires arrive ready to install with terminals and coil boots already fitted. Available in bold red for easy identification in tight engine bays, SUMAX's U.S.-manufactured design works seamlessly with both modern electronic ignitions and classic point-type systems.

• Spiro-Pro core construction
• 10x standard wire conductivity
• 600°F silicone boots
• 3-4x longer lifespan
• Low-resistance design
• Precut, ready-to-install
• Electronic/points compatible
• Made in U.S.A.
• FLT fitment (verify application)
• Distinctive red finish