Dyna Performance Replacement Coils are high tech, top quality coils, designed for maximum performance. They produce spark voltages in excess of 30,000 volts and spark energies second to none. Dynatek coils are available in a wide variety of resistances and output configurations to allow easy replacement of stock coils. Dynatek coils work with factory electronic ignitions, points, and aftermarket ignitions. Choose from four body styles and five different primary resistance ranges to match your ignition needs. Advanced magnetic core technology of the Dynatek Mini Series Coils delivers high output in one of the smallest packages available. Great for customs where coils need to be hidden. Before selecting a coil, check the coil primary resistance requirements as specified by the manufacturer of the ignition being used. Not legal for use in California on pollution controlled vehicles - Check local laws before installing.