Moroso High Performance Ultra 40 Ignition Wire - 40/SET 1978-1983 Universal

Moroso High Performance Ultra 40 ignition wire set combines silicone construction rated to 600°F with DuPont Kevlar cores for durability under extreme heat and vibration. Fully compatible with Harley-Davidson ION sensing coils on virtually all late-model bikes.

Features

• 8.65mm diameter with 40 ohms per foot resistance
• Nickel copper alloy conductors for superior spark energy transfer
• High-temperature silicone boots rated to 600°F
• Locking stainless steel plug terminals
• DuPont Kevlar core — four times stronger than standard Aramid cores
• Extra-thick EPDM layer for greater dielectric strength
• 100% compatible with Harley ION Sense ignition coils

Specifications

• Brand: Moroso
• Manufacturer Part #: 28332
• UPC: 84663283321
• Resistance: 40 ohms per foot
• Core Material: DuPont Kevlar
• Wire Diameter: 8.65mm
• Weight: 0.81 lbs
• Country of Origin: USA

Fitment

Fits Harley-Davidson models equipped with ION sensing coils, covering virtually all late-model bikes.

Frequently Asked Questions

Are these compatible with my Harley's ION ignition system?

Yes — Moroso Ultra 40 wires are engineered specifically for Harley ION sensing coils and work on virtually all late-model Harleys.

What makes these wires better than stock?

DuPont Kevlar cores are four times stronger than standard Aramid, silicone construction handles 600°F heat, and nickel copper conductors transfer spark energy more efficiently.

Will these wires reduce engine heat or noise?

The silicone jacket reduces heat transfer to surrounding components and chafing. These are performance wires, not noise-canceling.

How do I know which wire goes to which cylinder?

Wire length and routing diagrams are included in the set. Cross-reference your specific Harley model year in the instructions before installation.