HKS M-Series Super Fire Racing Plugs (x4)

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  • Regular price $180.00
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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.

Customer Reviews

Based on 8 reviews
A must for modified cars...

Was experiencing periodic boost cuts on my stock spark plugs, presumably from the extra heat and load from my RaceChip S and other mods, and these spark plugs resolved the issue instantly. A must have if you are planning on modifying or tuning your Hyundai/Kia 1.6T as they are cooler and can take more load. Tristan provided a quick turnaround time and has been amazing in supplying quality parts. 10/10 recommend!!

Race chip rs

Money will spend your can really feel the increase in power more bust
20 psi easy I'm very happy with it.

Fixed my Idle Issue

Got these plugs due to a having a slight miss at idle from running the Race Chip GTS on my 2019 GT Cerato, was sceptical at first that these plugs would fix it, but was happily surprised as it now idles perfect. I would highly recommend using them when running a Racechip.

Making more power possible

Installed these in M N Line which allowed for a retune. With these plugs in the car is now able to make more power and hold consistent boost in the higher RPM ranges.


HKS M-Series Super Fire Racing Plugs (x4)