409 Spiro-Pro Plug Wire Race Set 135-Deg Red

The 409 Spiro-Pro Plug Wire Race Set with 135-degree red boots is a complete spiral-core ignition wire kit designed for high-performance GM LS-series engines. This Taylor/Vertex race-spec set delivers maximum spark energy transmission with factory-style boot and terminal compatibility, making it an ideal choice for both street performance and track applications where ignition reliability and consistent firing characteristics are non-negotiable.

The 10.4mm spiral-core construction suppresses electromagnetic interference while ensuring clean signal delivery to the spark plugs, a critical factor when running modern engine management systems or aftermarket tuning software. The 135-degree boot angle is engineered to fit LS-platform valve cover geometry without interference or strain on the connections. Factory-style terminals provide secure engagement with both OEM and performance-grade spark plug boots, eliminating a common point of ignition system failure. The bright red color aids in quick visual identification of wire routing during engine diagnostics and maintenance.

This kit suits LS-series powered vehicles from street drag racing platforms to performance street machines where dependable cold-start capability and sustained high-RPM firing are essential. Owners upgrading ignition systems for carburetor conversions, forced induction builds, or higher compression ratios will find the race-grade wire construction resistant to heat cycling and insulation breakdown. Proper installation using OEM boot routing prevents cross-firing and maximizes the efficiency gains from any parallel ignition system improvements.