SUPER FIRE RACING-M Series
Ultimate spark plug "M".
Ignitionability, durability, anti-insulation are all reinforced. HKS has made the best plug for both tuning engines and stock engines.
0.6mm Iridium Alloy Center Electrode
Outer Electrode with Platinum Chip
The outer electrode incorporates a square platinum chip which improves durability, and combining with the iridium center electrode boosts ignition performance.
The outer electrode features a shortened tip design and tapered shape while maintaining the necessary space for proper ignition.
Short Type Outer Electrode (Anti-Vibration)
Spark Support Gap
Performance and Efficiency
Increased Ignition Performance
- Decreased voltage requirement strengthens ignition performance under harsh conditions like lean mixture or high boost pressure.
- New material and design improve durability which allows for use under hard combustion conditions like continuous high load during circuit driving or aggressive tuning.
* Improper combustion condition and wrong heat range selection may cause damage to the spark plug.
Decreased Carbon Deposits
- Thermal edge and spark support gap help prevent carbon buildup for better ignition under various combustion conditions.
Nissan 370z 2009+