Replacement Coil Wire Kit - Ultra 40 Unsleeved

The MOROSO Replacement Coil Wire Kit – Ultra 40 Unsleeved is a precision ignition component engineered for high-performance and racing engines that demand consistent spark delivery under extreme operating conditions. This 72-inch unsleeved coil wire kit features an 8.65mm diameter conductor core designed to handle the electrical demands of modified and supercharged engines while minimizing voltage drop across the full wire length.

The Ultra 40 designation indicates this wire kit is rated for ignition systems generating up to 40,000 volts, a specification critical for high-RPM applications where standard wiring can fail under thermal and electrical stress. The unsleeved construction reduces parasitic capacitance, allowing faster spark rise times and sharper ignition curves. MOROSO's spiral-wound core design provides superior EMI suppression while the durable insulation withstands continuous exposure to engine heat, vibration, and automotive fluids common in track environments, street performance builds, and endurance racing setups.

This coil wire kit serves engine builders, restoration shops, and performance enthusiasts upgrading ignition systems on small-block and mid-displacement platforms where OEM wiring proves inadequate. The 72-inch length accommodates various engine bay layouts and aftermarket distributor configurations common in hot rodding and bracket racing. Direct replacement or upgrade installation requires proper terminal seating and distributor cap clearance verification, particularly when paired with performance-grade ignition boxes or multi-spark systems.

MOROSO's track-proven wire kits remain a category standard for serious engine builders prioritizing ignition reliability over extended product lifespan, making this Ultra 40 unit a direct OEM replacement or upgrade component for vehicles requiring professional-grade spark delivery performance.