MSD Digital 2-Step Rev Control - For (6425) 356906 To ensure proper sealing of

To ensure proper sealing of valve covers

shield changing

Black Oxide / Cadmium

connect three wires to the coil and fire it up

Tough enough for use in NASCAR with J-form threads

MSD Digital 2-Step Rev Control - For (6425) 356906 To ensure proper sealing ofSince the new Digital 6AL Ignition uses rotary dials to adjust the rev limiter, our engineers were tasked with developing a 2 Step Rev Control that could be added to give racers the ability to switch to a low rpm limit to use on the starting line. There are two easy to read rotary dials that let you set the launch rpm in 100 rpm increments. There is an activation wire that connects to the transbrake, a clutch switch or to the line lock to activate the