MSD 8739 Two-Step Module Selector<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Allows user to switch between 2 RPM/timing modules</li><li>Set a different RPM limit for the launch and over rev protection</li><li>Improves consistent hole shots</li><li>Must be used with MSD soft touch rev limiter</li><li>Must be used with MSD timing control</li></ul></div><img src="http://ecx.images-amazon.com/images/I/412ZWMQVQVL.jpg" noproxy>