7.25 12-1X Crank Trigger Kit GM LS Hall Effect

The Holley 7.25 12-1X Crank Trigger Kit GM LS Hall Effect is a precision engine management component designed for LS engine builders and performance enthusiasts who require accurate ignition timing control. This crank trigger system replaces traditional mechanical distributor-dependent ignition with advanced Hall Effect sensor technology, providing standalone engine control and tuning flexibility.

The kit features a Hall Effect sensor that reads a 12-tooth trigger wheel, specifically machined for compatibility with LS-platform crankshafts. This technology delivers a clean, noise-free digital signal to your ECU or ignition controller, eliminating timing drift and electrical noise typically found in older magnetic pickup designs. The sensor housing and bracket are engineered for secure mounting and consistent positioning.

Ideal for LS engine swaps into classic vehicles, fuel-injected street builds, and competitive drag racing applications, this kit ensures compatibility with most modern engine control systems, including Holley's own EFI and ignition platforms. With its high-resolution timing data, it allows for precise ignition advance curves and multi-spark capability, making it a valuable addition for any performance-focused project.