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Many people phone or pop in to the shop, and some of the questions are , ” What plugs do I use in my Motorcycles”?


Well I have to be honest and tell them that I use The NGK plug, I really do prefer the Iridium series as it gives me masses of energy and the better the spark, the better and cleaner the combustion.

Honda Fours do foul a standard plug quite easily and over the many years of me riding and servicing these machines, I have tried and tested so many different set ups, hot plugs, mid range plugs and cold plugs and none have come close to these that I use.

I am now offering these set of Four plugs on here and that way you can then get your ride running how it should be, I also use a good plug wrench of which I hope to sell too, as I know that if I have success with what I use- you will too.

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

Product Features:

  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs.
    Center Electrode Core Material:
    Copper Core
    Center Electrode Tip Material:
    Electrode Core Material:
    Electrode Tip Material:
    Gap Size:
    0.032 in
    Ground Configuration:
    Ground Electrode Core Material:
    Nickel Core
    Ground Electrode Quantity:
    Ground Electrode Tip Design:
    Taper Cut
    Ground Strap Quantity:
    Hex Size:
    Manufacturer Heat Range:
    19 mm
    Seat Type:
    Shorty Spark Plug:
    Thread Diameter:
    12 mm
    Tip Configuration:
    Iridium IX
    Wrench Diameter:
    18.00 mm



Weight .4 lbs