Moroso 28325 Ultra 40 Spark Plug Wire Set 8.65mm High Performance

The Moroso Ultra 40 plug wire set represents the gold standard in high-performance ignition systems, trusted by racing teams from top fuel drag racing to NASCAR Sprint Cup Series competition. These professional-grade wires deliver maximum spark energy while maintaining superior electromagnetic interference (EMI) and radio frequency interference (RFI) suppression.

Key Features:

• 8.65mm diameter spiral-wound conductor design for optimized energy transfer
• 40 ohms per foot resistance rating for ideal balance of performance and noise suppression
• Advanced spiral-wound core construction maximizes ignition energy delivery
• Superior EMI and RFI resistance prevents interference with electronics and communication systems
• Race-proven technology used in dual magneto top fuel applications and NASCAR competition
• Precision-engineered terminals ensure reliable connections and long service life
• High-temperature silicone jacket withstands extreme underhood conditions

Engineered for serious performance applications, the Ultra 40 wire set delivers consistent, powerful spark energy to maximize combustion efficiency while maintaining clean operation that won't interfere with onboard electronics or radio communications. Whether you're building a race engine or demand the ultimate in ignition performance for your street machine, Moroso Ultra 40 wires provide professional-grade reliability.