MSD Chevy Big Block Crank Trigger Kit - 8 in. Balancer 20602 extension tube and neck are

extension tube and neck are all manufactured from rugged 6061-T6 billet aluminum to withstand harsh racing environments and continual cap removal/replacement

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This high output magnetic pick-up is the most accurate way to trigger your ignition

MSD Chevy Big Block Crank Trigger Kit - 8 in. Balancer 20602 extension tube and neck areThe MSD Flying Magnet Crank Trigger system does exactly that by using four magnets embedded in an aluminum wheel. Although similar in appearance to other crank triggers, the MSD Flying Magnet design works on a different principle. 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