RPM Modules, MSD, Odd Increments

Plug-In RPM Module Kit (Odd Increments) by MSD®

Five plug-in modules provide 200-rpm steps within the selected range.

This MSD® module kit changes the rpm threshold on compatible ignition controls and accessories that use a plug-in RPM socket. Each selected kit contains five modules spaced 200 rpm apart. Odd-increment kits begin at a hundred-ending value, such as 3,100, then 3,300, 3,500, 3,700 and 3,900 rpm. Choose the range for the desired limit. These plug-in modules are not used to adjust later ignition boxes that set their limits solely with rotary dials.

• Compatible MSD controls/accessories with a plug-in RPM-module socket • Five modules per selected kit • 200-rpm spacing between modules • Odd hundred-rpm increments • Available rpm ranges: 3,100-3,900, 4,100-4,900, 5,100-5,900, 6,100-6,900, 7,100-7,900, 8,100-8,900 • Not required for controls using rotary-only limit settings