MSD Digital 2-Step Rev Control - For (6425) 356906 Lock Washers Included

Lock Washers Included

Tough enough for use in NASCAR with J-form threads

Chevrolet: Silverado 1500 19 - 22 5

To ensure proper sealing of valve covers

MSD Digital 2-Step Rev Control - For (6425) 356906 Lock Washers IncludedSince 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