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Fits small block Chevy
Absolutely the most accurate way to trigger the ignition
The non-magnetic pickup cannot be false triggered
Powerful magnets are embedded in a billet aluminum trigger wheel
Replacement crank trigger wheel for small block Chevy 7 In. balancer. For a long time racers have known that one of the best things to do to an engine to improve its performance is to stabilize ignition timing. The MSD flying magnetic crank trigger system does exactly that by using four magnets embedded in an aluminum wheel. This is the replacement part for the aluminum crank trigger wheel.