S&S ignition's one piece machined aluminum housing reduces the vibration and improves dissipation and reliability.
The S&S Cycle HI-4N Ignition System offers versatile ignition options with its integrated single and dual fire functions, designed to enhance the performance and reliability of Harley Davidson FLT models from 1984 to 1993. This advanced ignition module features built-in adjustable features, including easy mode advance rate and rev limit adjustments, allowing riders to fine-tune their engine’s performance for optimal power and efficiency. The ignition system incorporates initial timing marks for precise timing adjustments and straightforward reinstallation, simplifying the tuning process. Constructed with integrated sensor covers within the housing, the unit provides added protection during installation and operation, ensuring durability and longevity. The improved kick start algorithm ensures reliable engine startups, even in challenging conditions, while the flexible wiring harness facilitates easier installation, saving time and effort. Crafted in the USA, this ignition module is a reliable upgrade designed to meet the demands of custom and stock Harley Davidson engines alike. Compatible with a range of FLT models spanning over a decade, the S&S HI-4N ignition system is an essential component for riders seeking increased engine control and performance. For enhanced installation, it includes accessory items such as the Timer Device Tool and the Clean Time Tool, making setup and maintenance more manageable. Whether you’re restoring a vintage Harley or upgrading your current setup, the S&S HI-4N ignition module provides dependable ignition performance with easy customization options to suit your riding style and engine specifications.
Features:
- Single and dual fire functionality built into a single module for versatile ignition options
- Easy mode advance rate and rev limit adjustments for customized engine tuning
- Initial timing marks included for precise timing adjustments and reinstallation
- Sensor covers integrated into the housing for added protection during installation
- Improved kick start algorithm for easier engine startups
- Flexible wiring harness simplifies installation process
- Constructed in the USA with durable materials
- Compatible with Harley Davidson FLT models from 1984 to 1993
Fitment
Harley Davidson FLST 1986
Harley Davidson FLST 1987
Harley Davidson FLST 1988
Harley Davidson FLST 1989
Harley Davidson FLST 1990
Harley Davidson FLST 1991
Harley Davidson FLST 1992
Harley Davidson FLST 1993
Harley Davidson FLST 1994
Harley Davidson FLST 1995
Harley Davidson FLST 1996
Harley Davidson FLST 1997
Harley Davidson FLST 1998
Harley Davidson FLST 1999
Harley Davidson FLT 1984
Harley Davidson FLT 1985
Harley Davidson FLT 1986
Harley Davidson FLT 1987
Harley Davidson FLT 1988
Harley Davidson FLT 1989
Harley Davidson FLT 1990
Harley Davidson FLT 1991
Harley Davidson FLT 1992
Harley Davidson FLT 1993
Harley Davidson FLT 1994
Harley Davidson FLT 1995
Harley Davidson FLT 1996
Harley Davidson FLT 1997
Harley Davidson FLT 1998
Harley Davidson FLT 1999
Harley Davidson FXD 1991
Harley Davidson FXD 1992
Harley Davidson FXD 1993
Harley Davidson FXD 1994
Harley Davidson FXD 1995
Harley Davidson FXD 1996
Harley Davidson FXD 1997
Harley Davidson FXD 1998
Harley Davidson FXD 1999
Harley Davidson FXR 1984
Harley Davidson FXR 1985
Harley Davidson FXR 1986
Harley Davidson FXR 1987
Harley Davidson FXR 1988
Harley Davidson FXR 1989
Harley Davidson FXR 1990
Harley Davidson FXR 1991
Harley Davidson FXR 1992
Harley Davidson FXR 1993
Harley Davidson FXR 1994
Harley Davidson FXST 1984
Harley Davidson FXST 1985
Harley Davidson FXST 1986
Harley Davidson FXST 1987
Harley Davidson FXST 1988
Harley Davidson FXST 1989
Harley Davidson FXST 1990
Harley Davidson FXST 1991
Harley Davidson FXST 1992
Harley Davidson FXST 1993
Harley Davidson FXST 1994
Harley Davidson FXST 1995
Harley Davidson FXST 1996
Harley Davidson FXST 1997
Harley Davidson FXST 1998
Harley Davidson FXST 1999
