NGK Spark plugs R5724-9

NGK Racing spark plugs are designed for engines prepared for high compression ratios and intense high-speed use. The electrodes are made of precious metals such as Iridium, Platinum or OR-Palladium. Their high thermal indexes (cold spark plugs) ensure better heat dissipation. The spark plugs are designed to withstand high temperatures, high pressures and vibrations, all of which standard spark plugs cannot withstand. That's why the NGK Racing range features a ring ground electrode.