The Marine Rev Control can only be used with the 6M-2 Marine Ignition and will protect your engine from over-revving caused by broken drive components or when the boat's drive mechanism comes out of the water. Computer circuitry in the Soft Touch drops the spark from one cylinder at a time and then fires that cylinder on the next cycle for a smooth limiting action without backfires or roughness.
The rpm that the limiting action occurs at is adjusted with plug-in modules and is supplied with modules for 4,000, 6,000 and 8,000 rpm. A variety of Marine RPM Module Kits are listed at the bottom of this page. (These are the only rpm modules that will work with the Marine Rev Control.) U.L. approved for marine use. The Marine Rev Control uses a special Weathertight connector to plug into the 6M-2 Ignition.

Marine Rev Limiter, For MSD 6M-2 Ignition - PN 8768