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A perennial favorite of the Twin Cam crowd, Thunder Heart's stand-alone ignition system includes everything you need to optimize spark timing on your 2001-2006 model year Twin Cam engine'd Harley-Davidson motorcycle. It’s also an exceptional choice for custom bike builders using the venerable Twin Cam engine as it can easily be configured to handle a wide range of tuning needs.

Each kit comes with everything you need to deliver spark to your engine: wire harness, coil, ignition module and a rigorous set of instructions along with the requisite tuning software for your PC.

Available for carbureted 2001-2006 Twin Cam models, you can read more about this unit on our website by following this link here.


Everything that comes in the box.


In stock and ready to ship for 2001-2006 carbureted Harley-Davidson Twin Cam models!
8mm silcone cables.


Thunder Heart ignition coil.