HKS Super Fire Racing Spark Plug #10 Heat Range GR86, BRZ, GT86, 2015+ WRX, GT-R,370Z

HKS M50HL is the same as NGK 10. This Plug is for a high tuning vehicles.

【FEATURES】

• M12 long reach HEX size 14 for 86, BRZ and GT-R.

• R35 GT-R stock's heat range is the same as NGK 8, NGK 9 to 86/BRZ
• Reinforced by making the outer electrode bigger (see the pictures below). Also could have a steady ignition and ignition speed at a high load and high RPM by putting the center electrode in the middle of the spark plug.
• Improved the anti-taint property by making thermal edge to prevent the carbon buildup which occurs for the tuned engines.