Single Fire Programmable Ignition Kit For 1970-03 Harley-Davidson Big Twin Evo

Single Fire Programmable Ignition Kit for Harley-Davidson Big Twin Evo

This single fire programmable ignition kit replaces the factory ignition on 1970-2003 Harley-Davidson Big Twin Evo models, delivering fully adjustable timing curves for stock and modified builds.

Overview

This single fire programmable ignition kit is made for riders running 1970-2003 Harley-Davidson Big Twin Evo engines who want control over spark timing rather than a fixed curve. The programmable module lets you dial in advance settings for the cam, compression, and fuel you run, keeping the single fire ignition kit responsive across the rev range. It suits builders, tuners, and daily riders who want dependable starts and clean combustion from a single fire programmable ignition kit.

Built For Performance

• Single fire firing mode delivers consistent spark to each cylinder for smoother idle quality
• Programmable timing curves allow adjustment for camshaft, compression, and fuel changes
• Designed as a direct replacement for the factory ignition module on Big Twin Evo motors
• Supports modified and high-performance builds where stock timing no longer fits
• Sealed module construction suited to the vibration and heat of V-twin use

Fits These Machines

• for Harley-Davidson Big Twin Evo models from 1970 through 2003

On-The-Job Use

• Dialing in timing on a fresh camshaft or big bore build
• Restoring consistent spark on a high-mileage Evo engine
• Tuning for altitude, fuel quality, or temperature changes
• Replacing a failed or outdated factory ignition module

Specs At A Glance

Good To Know

Q: Can I adjust timing without a dyno? A: Yes, the programmable curves can be set manually, though a dyno session helps confirm the best advance for your build.

Q: Does this work with the stock coil? A: Compatibility depends on your coil and wiring, so verify your ignition setup and serial number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.