Description & Size Guide
Single fire. For electric start models. With 538405 module with slower advance curves for high compression engines that struggle with detonation issues. Full advance is reached at a higher RPM. Comes with a single fire ignition coil and a set of universal spark plug wires. Note: A tach adapter (MCS 538408) is required to correct tacho-output when using single fire ignition; for correct RPM representation.
70-99 Big Twin (excl. Twin Cam) and 71-01 Sportster (excl. 1200S). Models electric start
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