Spark Plugs

RHS® offers many application-specific spark plugs for our lineup of high performance aluminum and cast iron cylinder heads. For street performance applications, ZEX™ High Performance Spark Plugs are offered, and for racing usage a specially-designed line of Champion spark plugs is available with a wide assortment of heat ranges.

The ZEX™ spark plugs feature Igniter Core™ Technology, which allows them to conduct electricity over five times better than platinum and nearly three times better than iridium. This results in more horsepower-producing spark energy and greater detonation resistance than either of these materials. Champion, a great name in aftermarket spark plug design, has created a line of top performing racing plugs for RHS®. These plugs incorporate Heat-Active™ alloy material for maximum heat dissipation and conductivity to retain stable operating temperatures.