Brisk's Premium Racing LGS Spark Plugs feature Silver, which is the best conductor of any metal. They also utilize a very unique, semi-surface discharge electrode design. By implementing this design, the spark plug is able to fire a much larger spark plug gap, requiring much less energy than firing a traditional style air gap. A longer spark discharge makes more contact with the A/F mixture, igniting more molecules in the A/F mixture over a larger area, providing more power. There is no need for indexing premium racing style spark plugs since the ground electrodes of this plug are arranged symmetrically. There is no ground electrode restricting the access of the air-fuel mixture, as the spark occurs on the very end of the firing tip. Premium racing LGS spark plugs are also a great choice for naturally aspirated applications with powerful factory and aftermarket ignition systems.