Drag Specialties - Spark Plugs fits '75-'84 Shovelhead (Cold), '84-'99 Evolution Big Twin Models

Drag Specialties - Spark Plug fits '75-'84 Shovelhead (Cold), '84-'99 Evolution Big Twin Models

This spark plug features a copper core electrode, which prevents oxidation and corrosion, provides good electrical and heat conductivity and makes long spark plug service life. The insulator is constructed from 95% pure alumina, which has strong resistance to heat shock and outstanding insulation. The multi-layer gaskets and heat crimping process guarantee a leak-free, gas-tight seal. Overall, the plug has a one-of-a-kind look with a black ceramic body and a bold red logo/script.

Cold Spark Plugs:

• Designed for: High performance and engines subjected to high load conditions.
• Characteristics: Have a shorter insulator nose which helps dissipate heat from the combustion chamber more quickly, reducing the risk of pre-ignition or detonation in a hot engine.
• Best Used: For motorcycles that are ridden hard, tuned for high performance, or often operate in hot climates. They are preferable for long rides at higher speeds where the engine reaches higher temperatures.

Features

• Multi-rib design of the insulator eliminates flashover
• Nickel-plated housing prevents oxidation and corrosion
• Sold in pairs