EI Ignition Coil Upgrade / Airhead Twins '55-'69

The Emerald Island Ignition Coil has become the gold standard ignition coil upgrade for ‘55-‘69 model twins with thousands of them in use around the globe. The is the most current “blue” version which incorporates all the latest improvements. Coil failures have become extremely common on these old bikes.  In the majority of cases, hard starting will be traced to a bad coil.

Made with an extra ground wire for improved performance and reliability.

This is a bolt on replacement, no modifications required.