HKS

HKS M-Series Super Fire Racing Plugs

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Planning on getting more power out of your 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

Features:

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 12 reviews
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G
G.D.
HKS M SSF

They seem great car starts even smoother/better now. so worth it imo

M
M.B.
HKS M45XL for 2017 Hyundai Elantra SR Turbo

These plugs are barely any more expensive than the OEM plugs, and they set you up nicely to add power to a 1.6T Hyundai motor. Arrived fast, in very nice Cherry Tuning Packaging, easy install, motor runs smooth as.

D
D.M.
Better plugs all round for the Cerato GT.

Even though these plugs are a colder heat range than standard, they have not made the car any harder to start on cold mornings, even in wet weather ( if anything, they have made the car start a little easier, as well as run better, even during the warm-up phase ). There has been a noticeable improvement in performance, and the car seemed to have a little more torque while driving up a steep hill. After I installed the plugs, I took the car on two test drives on two different days, on my favorite 19.3 km test circuit, consisting of a mix of highway and suburban driving, with variation in ambient temperature and traffic conditions, and I was able to achieve an improvement in fuel economy over the stock plugs by about 3.2% to 4.8%, and this was with the factory tune while running 91 Octane regular unleaded. These plugs complement all the other mods that I have done to improve the car's performance ( intake and exhaust ), but I expect that I will get the full benefit from them once I install the Racechip that I bought, and run the car on 98 Octane premium unleaded. If you want to use all available bolt on mods to improve engine efficiency right across the board ( horsepower, torque, acceleration, throttle response, and fuel economy ), I would highly recommend these plugs.

N
N.P.
Purchase Wagner Intercooling, K&N Pod filter, Racing plugs

has made a huge difference to the performance of the vehicle, and is everything i had hoped for. Will be buying more parts soon from Cherry!!

J
J.
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!!