S&S Crane Cams HI-4N HI4N Single Fire Ignition Module Harley Evo Shovelhead XL

BRAND NEW

PART # 550-0501

All the same contents as pictured but with S&S branding

Single-Fire ignition capable of adjusting the rear cylinder timing +/- 5 degrees

Fits: 1984-'99 HD® Big Twins.HI-4N Ignition only. 
**WILL NOT FIT 1200 SPORT MODELS**

Give your machine more kick

Dyno-proven power gains with aggressive ignition curves

Immediately fires the first cylinder on kickers and reduces kick-back and strain on electric start systems

Electronically adjustable advance allows timing based on engine modifications, operating conditions and gasoline; also utilizes stock VOES unit when applicable

Sealed electronic protection circuits protect from high-temperature, short circuits, coil failure and wiring errors

Rev limiter adjusts from 4000 to 8000 rpm; tach output accurate even at rev limits

Includes timing LED for static timing and diagnostic information

Designed for use with single or dual plug head (use suppression or spiral core wires)

Spiral core wires are recommended for maximum performance (do not use solid copper spark plug wires; they may cause interference with ignition system and accessories)

 Entire unit fits under the point cover on EVO and Shovelhead Big Twins and Sportsters through 01 except Twin Cam 88

Systems utilize 1984-1999 OEM pick-up rotor; on pre-1984 models you will need to purchase OEM NO. 32402-83 pick-up rotor

Coils must have at least 2 ohms primary resistance

Order coils separately

Made in the U.S.A.

Fits 1970-1999 Evolution and Shovelhead Engines / Motors 74" 80" 1200 1340.

NOTE: When using dual-plug heads, specific dual plug coils required