HI-4N Performance Ignition for 1984-'99 HD® Big Twins.

Wanting to change ignition timing faster for your latest rounds of mods? The S&S HI-4N Ignition Module will accomplish that. Made from quality materials in the USA. 

Features:

• Single-fire and dual-fire function built into a single module
• All-metal housing provides improved heat dissipation
• Ignition advance and timing degree markings are on the metal flange
• Sensor housings contain advanced flux concentrators with high-temperature-resistant samarium/cobalt magnets for accurate, reliable ignition triggering
• Electronics are fully enclosed to resist vibration, moisture and dirt
• Four rotary switches for ignition mode selection, advance rate, and rev limit
• Not for fuel-injected models

Note:  Not legal for sale or use in california on any pollution controlled motor vehicles.