Stock on backorder, expect 2 week wait
Planning on getting more power out of your G4FJ powered Hyundai or Kia by installing a RaceChip or tuning your ECU? You'll want to upgrade your spark plugs to make the most of your factory ignition system.
HKS M-Series Super Fire Racing spark plugs are high performance Iridium plugs designed to handle advanced levels of tuning and provide Improved ignition performance, durability and anti-carbon build-up M-Series Super Fire Spark Plugs
0.6mm Iridium Alloy Center Electrode - Iridium Alloy Center Electrode reduces voltage requirement as well as improving ignition performance and durability.
Outer Electrode with Platinum Chip - The Outer Electrode incorporates a square platinum chip which improves durability, and when combined with the iridium center electrode boosts ignition performance.
Short Type Outer Electrode (Anti-Vibration) - The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resistance against vibration. This anti-vibration design improves longevity of the outer electrode.
Plugs supplied were pre gapped and ready for fitting. I will see the full affect of these when I get my car tuned but they will still work well on a factory car.