Brisk Premium Multi-Spark Racing MR12ZS Spark Plug

MR12ZS Brisk Premium Racing Spark Plugs ZC ZS Brisk SKU  -  MR12ZS Parameters: Thread Diameter 12mm Thread Reach 26.1mm- 1" Hexagon 14mm- 9/16" Seat Type Gasket Design Multi-Spark Resistor Yes Projected Yes Heat Range  -  12 Brisk MR12ZS Replaces:       Brisk premium racing spark plugs are a multi spark exposed center core and 360 degree earth electrode design. Made out of silver the center core is isolated by a laser deposited ceramic insulator. This manufacturing system gives far superior utilization of fuel energy and reduction in fuel consumption of new and older engines. Brisk ZS ZC racing spark plugs are the very latest in ignition technology pushing the boundaries of spark plug design to the limit. The 360 degree arc design can occur on a minimum of 3 points at once, even very rich mixture found in race engine under heavy load. The ignition arc gives off a sparkle like effect all around the center core and laser deposited rings on circumference of ceramic insul