Most crank triggers have a wheel, with steel studs sticking out, bolted to the harmonic balancer. As the crankshaft turns, the studs pass by a stationary magnetic pick-up, triggering the ignition. This pick-up can be triggered by other bolts, debris or even vibrations which will cause a loss of power or engine damage. The MSD Flying Magnet Crank Trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This "flying magnet" design produces accurate trigger signals and the non-magnetic pick-up cannot be false triggered, making this one of the best on the market!!

Features

Replacement crank trigger wheel for small block chevy

Powerful magnets are embedded in a billet aluminum trigger wheel

Absolutely the most accurate way to trigger the ignition

Includes Crank Trigger Wheel and Centering RIng