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Changing RPM limits has never been easier than with an MSD 2-Step Module Selector. Designed for use with all MSD Soft Touch Rev Controls and accessories that use plug-in modules, this top-of-the-line, drag race-ready selector allows you to choose between two different limits and 12 distinct RPM settings in increments of 200 RPM. All you have to do is turn the knob, and you can activate those limits any time you want.
Not legal for pollution-controlled vehicles, your MSD Two-Step Module Selector plugs directly into the retard module receptacle and carries with it a limited warranty.