Each kit is within a 1,000 rpm range. For example, the PN 8745 is supplied with: 5,000, 5,200, 5,400, 5,600, 5,800 modules.
MSD 87431 3000 Series Module Kit, Odd Increments
MSD 8743 3000 Series Module Kit, Even Increments
Engine RPM Limiter MSD 87431
MSD 87431 Ignition RPM Modules 3100 to 3900 rpm Set of 5
