Moroso 73617 Ultra 40 Race Ignition Wire Set Big Block Chevy Under Header 90 Degree

The Moroso Ultra 40 Race ignition wire set delivers professional-grade performance for Big Block Chevy engines with under-header routing configurations. This complete wire set features 90-degree spark plug boots designed for non-HEI distributor applications and includes a 36-inch coil wire.

Key Features:

• 8.65mm diameter spiral core wire with 40 ohms of resistance per foot for optimal spark energy transfer
• Kevlar core construction that is four times stronger than standard aramid fiber cores
• Nickel-copper alloy conductors wrapped at optimum ratio for maximum spark energy and minimal EMI/RFI interference
• Extra-thick EPDM insulation layer provides superior dielectric strength
• High-temperature silicone boots rated to withstand heat up to 600 degrees Fahrenheit
• Locking stainless steel spark plug terminals ensure secure connections
• Closely woven fiberglass sleeving impregnated with silicone adds up to 8,000 volts of additional protection
• Blue sleeved wire construction protects against exhaust header heat, chafing, and contaminants

Used at the highest levels of professional racing from Top Fuel drag racing to NASCAR, Moroso Ultra 40 Race Wire sets the standard for high-performance ignition systems. The sleeved design extends wire life by providing exceptional insulation against heat and environmental damage while maintaining superior electrical performance.