MSD 87451 5000 Series Module Kit, Odd Increments, Kits include five modules

MSD Ignition RPM Module Kit 5100-5900 RPM for Accurate Engine Control

MSD 87451 Ignition RPM Modules 5100 to 5900 rpm Set of 5

MSD Ignition RPM Module Kit 5100-5900 RPM Odd Series 87451

MSD Ignition 87451, RPM Module Chip Kit 5100-5900 RPM 200 RPM Increments Odd

MSD IGNITION 5100-5900 RPM Odd Series Module Kit- 87451

Rev Controller Msd Ignition 87451

Engine RPM Limiter MSD 87451