MSD Ignition RPM Module Kit - 8100-8900 Odd Increments

These module kits are designed for use with MSD Ignition control units. The modules plug into the box and control rev limits or launch control RPM. Each kit comprises of 5 modules in 200 RPM increments. Kits are available in odd or even increments so for example an even increment kit would include 6000, 6200, 6400, 6600 and 6800 RPM modules and an odd increment kit would include 6100, 6300, 6500, 6700 and 6900 increments.Sets rev limits for MSD Ignition control units5 different RPM models included in the kitKits available to cover popular RPM ranges