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  1. Brisk Silver Racing Spark Plug (Up to 600hp)
    $13.25

    Brisk 2007-2010 GT500 Silver Racing Spark Plug (Up to 600hp)

    Brisk Silver Racing Spark Plugs are the ultimate spark plug for your Mustang! These spark plugs are perfect for high compression, forced induction, and nitrous applications where maximum spark energy is required.

    Unlike copper, platinum, or iridium designs, Brisk spark plugs feature a fine wire Silver center electrode, cut-back side ground electrode, and high dielectric strengh insulator for superior ignitability, low ignition voltage requirements, and high dielectric strength. What does that mean to you? It means you get a stronger, more intense spark for improved power and gas mileage!

    2007-2009 Applications
    Brisk Silver Racing spark plugs colder than stock plugs and recommended for supercharged, turbocharged, and nitrous applications. Put these Silver Spark plugs in today and begin to get the most out of your Mustang!

    Note: There are two heat ranges offered for this spark plug. Part number GR14-S is recommended for applications up to 600 flywheel horsepower. Part number GR12-S is a colder heat range and recommended for applications up to 850 flywheel horsepower.

    Learn More
  2. Brisk Silver Racing Spark Plug (600hp+)
    $13.25

    Brisk 2007-2010 GT500 Silver Racing Spark Plug (600hp+)

    Brisk Silver Racing Spark Plugs are the ultimate spark plug for your Mustang! These spark plugs are perfect for high compression, forced induction, and nitrous applications where maximum spark energy is required.

    Unlike copper, platinum, or iridium designs, Brisk spark plugs feature a fine wire Silver center electrode, cut-back side ground electrode, and high dielectric strengh insulator for superior ignitability, low ignition voltage requirements, and high dielectric strength. What does that mean to you? It means you get a stronger, more intense spark for improved power and gas mileage!

    2007-2009 Applications
    Brisk Silver Racing spark plugs colder than stock plugs and recommended for supercharged, turbocharged, and nitrous applications. Put these Silver Spark plugs in today and begin to get the most out of your Mustang!

    Note: There are two heat ranges offered for this spark plug. Part number GR14-S is recommended for applications up to 600 flywheel horsepower. Part number GR12-S is a colder heat range and recommended for applications up to 850 flywheel horsepower.

    Learn More
  3. NGK BR7EF Spark Plugs (Set of 8)
    $34.99
    NGK BR7EF Spark Plugs (Set of 8)

    Replace your stock plugs with these NGK BR7 Plugs, thse plugs are for Lightnings and Cobras pushing a high amount of boost (12psi+). Learn More
  4. NGK TR6 Iridium Spark Plugs (Set of 8)
    $69.99
    NGK TR6 Iridium Spark Plugs (Set of 8)

    Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.

    NGK's new Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs.

    Learn More
  5. NGK TR6 V-Power Spark Plugs (Set of 8)
    $24.99
    NGK TR6 V-Power Spark Plugs (Set of 8)

    Replace your stock plugs with these NGK TR-6 Plugs, there are one step colder than stock. These are a must when changing out your supercharger pulley to create more boost. The colder plug will help prevent detonation from the increased heat the motor see's from higher boost levels. Learn More
  6. Denso IT22 Iridium Spark Plugs (Set of 8)
    $99.99
    Denso IT22 Iridium Spark Plugs (Set of 8)

    For those running high boost we are now proud to offer the Denso Iridium IT22's!!!

  7. Iridium plug
  8. 14mm thread
  9. .708"mm reach
  10. 16mm(5/8") Hex
  11. Taper seat
  12. 0.4mm Iridium center electrode
  13. Tapered cut U-groove ground
  14. Resistor


  15. In 1972, Denso received a patent for the popular U-Groove ground electrode design. This electrode was developed to meet the demand for improved ignitability, which is necessary for an increase of efficiency in emission gas purification and fuel consumption. The U-Groove gives the flame a groove to grow in, thereby creating a larger flame front for a more complete combustion even in the case of lean air-fuel mixture. A conventional, flat ground electrode design of regular plugs crushes the flame preventing full spark potential.

    Iridium Alloy

    In a never-ending effort to improve upon success, DENSO developed an Iridium alloy that is superior to platinum based on hardness, strength and melting point. The new Iridium alloy is composed primarily of Iridium with rhodium mixed in for oxidation wear. Iridium Alloy Pure Iridium has a melting point of almost 700degC higher than platinum, and had the greatest potential for resistances against wear. Iridium by itself is susceptible to oxidation wear at temperatures over 900degC, however, ordinary driving around town an engine would never reach these temperatures. Further testing proved that Iridium alone would not meet DENSO's demanding standards. After testing other pure metals combined with Iridium, rhodium proved to be the best choice to meet the needs of DENSO's spark plug engineers.

    More on Iridium:

    Laser Welding Process
    360 Laser Welding ProcessDENSO's Iridium Alloy had all of the qualities to produce the world's best spark plug, but conventional tooling prevented DENSO from mass manufacturing. Due to the high melting point there wasn't a welding process hot enough to join the Iridium tip to the nickel base. Necessity to melt the Iridium to the nickel base forced DENSO to pioneer its third patent, the 360deg Laser Welding Process, to provide a seal so reliable; the electrode resists wear even in the worst combustion conditions. More on Laser Welding Learn More
  • Denso IT24 Iridium Spark Plugs (Set of 8)
    $99.99
    Denso IT24 Iridium Spark Plugs (Set of 8)

    For those running high boost applications we are now proud to offer the Denso Iridium IT24's!!!

    In 1972, Denso received a patent for the popular U-Groove ground electrode design. This electrode was developed to meet the demand for improved ignitability, which is necessary for an increase of efficiency in emission gas purification and fuel consumption. The U-Groove gives the flame a groove to grow in, thereby creating a larger flame front for a more complete combustion even in the case of lean air-fuel mixture. A conventional, flat ground electrode design of regular plugs crushes the flame preventing full spark potential.

    Iridium Alloy

    In a never-ending effort to improve upon success, DENSO developed an Iridium alloy that is superior to platinum based on hardness, strength and melting point. The new Iridium alloy is composed primarily of Iridium with rhodium mixed in for oxidation wear. Iridium Alloy Pure Iridium has a melting point of almost 700degC higher than platinum, and had the greatest potential for resistances against wear. Iridium by itself is susceptible to oxidation wear at temperatures over 900degC, however, ordinary driving around town an engine would never reach these temperatures. Further testing proved that Iridium alone would not meet DENSO's demanding standards. After testing other pure metals combined with Iridium, rhodium proved to be the best choice to meet the needs of DENSO's spark plug engineers.

    More on Iridium:

    Laser Welding Process
    360 Laser Welding ProcessDENSO's Iridium Alloy had all of the qualities to produce the world's best spark plug, but conventional tooling prevented DENSO from mass manufacturing. Due to the high melting point there wasn't a welding process hot enough to join the Iridium tip to the nickel base. Necessity to melt the Iridium to the nickel base forced DENSO to pioneer its third patent, the 360deg Laser Welding Process, to provide a seal so reliable; the electrode resists wear even in the worst combustion conditions. More on Laser Welding Learn More
  • NGK TR7IX Iridium Spark Plugs (Set of 8)
    $69.99
    NGK TR7IX Iridium Spark Plugs (Set of 8)

    Iridium IX - The ultimate evolution of a performance spark plug.
    It may be time to invest in precious metal futures. NGK Iridium Spark Plugs represent the ultimate evolution of spark plug technology and performance. Iridium allows for a center electrode 75 percent the size of a platinum electrode and 24 percent the size of a conventional nickel electrode.

    The fine electrode tip is engineered for greater ignitability. And it's in the design of the iridium tip that makes Iridium IX a better spark plug. The electrode is not too thin and not too thick. It's just the right size to reduce the voltage required for spark and to maximize the overall longer life qualities of iridium. Learn More
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