MSD Selector Switch - 4600-6800 RPM BR20061 Allows the use of a

Allows the use of a Series 4 Gearset on a Series 3 Carrier

This Tester will check the operation of all of MSD's single-channel CD Ignition Controls

16 Fins Per Inch Core -Allows more airflow to provide better cooling

Lightning Fast Internet Update Software

MSD Selector Switch - 4600-6800 RPM BR20061 Allows the use of aThe RPM Module Selector plugs directly into the rpm module socket on all MSD Soft Touch Rev Controls and accessories that use plug in modules. The user can then select between tWe've different rpm limits by simply turning the knob. Six models are available to cover a range from 3,000 rpm to 12,800 rpm in 200 rpm increments. MSD Selector Switch 8671 4600 6800 RPM RPM Module Selector Plugs Into RPM Module Socket Fits On All MSD Soft Touch Rev Controls