HKS Super Fire Racing Spark Plugs M40I Heat Range #8

8.500 BHD 8.5 BHD

8.095 BHD

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Ultimate spark plug "M"

HKS Spark Plugs ignites faster with a predictable strong spark to improve fuel efficacy and achieve that best performance in any condition and environment. It’s very important to provide reliable ignition for an engine to perform at a maximum power. HKS Super Fire Racing Plug is the best plug item for extreme racing conditions that also will perfectly fit in the stock engine as well



-         0.6mm Iridium Alloy Center Electrode

-         Outer Electrode with Platinum Chip

-         Short Type Outer Electrode (Anti-Vibration)

-         Thermal Edge

-         Spark Support Gap


Performance and Benefits:

-         Increase ignition performance

-         Improve durability in high load during circuit driving or aggressive tuning

-         Thermal edge and Spark plug gap to prevent carbon builds up



-         Toyota Supra 2JZGTE

-         Nissan Skyline GT-R BNR32 RB26DETT

-         Nissan Skyline GT-R BNR33 RB26DETT

-         Nissan Skyline GT-R BNR34 RB26DETT

-         Honda B Series Engines



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