Ideal for street cars packing a little more power and are running a FAST® I6 ignition or XR-3000 Breakerless Conversion System. These coils feature lower resistance windings to ensure the most voltage pssible is brought into the coil with an optimized turns ratio for the best output. This combination is ideal for engines that endure higher RPM and performance such as circle track, road racing and off-road racing. The coils are filled with oil for optimum cooling and are housed in a sturdy steel canister that can handle the abuse of racing. They're topped iff with an akyld molded top and brass, screw-type terminals.