Precise ignition timing is critical for optimum engine performance in high-rpm and racing applications. This is achieved using an input sensor like a crank trigger. These devices feed the ignition box or ECU the precise position of the crankshaft in its rotation so that spark can be delivered to the spark plug at the best possible moment, which will maximize performance. JEGS offers high-quality crank trigger kits for Chevy, Ford, and Mopar engines from the best manufacturers, which include MSD, Moroso, FAST, Holley, and others. View our wide custom and universal crank trigger kit selection of that will help keep your ignition timing optimized.