Description & Size Guide
Single fire. With racing retard 538407 ignition module. For electric start models. Offers retard max. advance and slower advance curves for turbo; supercharged or very high compression motors. Module comes with a built-in static timing light and feature a extended temperature and low voltage operation with soft-start circuitry for easy starting. 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 with mechanical advance
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