Moroso 73685 Ultra Custom Fit Wire Set High Performance Ignition Wires - 40

The Moroso Ultra 40 Custom Fit Wire Set delivers professional-grade ignition performance with advanced materials engineered for high-performance engines. These premium spark plug wires feature a sophisticated multi-layer construction designed to provide maximum spark energy while resisting heat, EMI interference, and electrical leakage.

Advanced Construction Features:

• Locking stainless steel terminals ensure secure, vibration-resistant connections that won't pull loose
• Nickel copper alloy conductor provides excellent electrical conductivity with superior durability
• Ferrite impregnated core suppresses electromagnetic interference for clean spark delivery
• Kevlar center core adds exceptional tensile strength and prevents wire stretch
• Conductive polymer coating enhances electrical performance and protects against voltage leakage
• High-temperature silicone jacket protects against extreme underhood heat up to 600°F
• High-temperature silicone boots provide additional protection at connection points
• Fold-over crimping method creates permanent, low-resistance terminal connections

The Ultra 40 series combines race-proven technology with custom fitment for a wide range of applications. The low-resistance design ensures maximum spark energy reaches the plugs, while the multi-layer shielding prevents crossfire and maintains consistent performance under demanding conditions.