Recommended on those vehicles which are Stage 3 tuned and above. NGK Racing Series Plugs are Engineered to Withstand the Harshest Engine Conditions.
- Fine Wire Centre Electrode Ensures High Durability and a Consistently Stable Spark
- Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines
- Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
- Corrugated Ribs Prevent Flash-over
- Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
- Copper Core Aids in Heat Removal
- Triple Seals Prevent Leakage