Item: 917435

NGK Iridium Motorbike Spark Plug CR9EIX9


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  • Description
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • NGK Iridium Motorbike Spark Plug CR9EIX9 uses the strong metal iridium which offers improvements in starting, idling & throttle response.

    Features & Benefits of the NGK Iridium

    • Iridium alloy has extremely high melting point, perfect for todays high-tech, high-performance engines.
    • Iridium has an extremely high melting point & offers greater protection from chemical attack
    • Allows the use of an extremely small diameter electrode (0.6mm) without compromising the spark plugs service life
    • Designed specifically for the performance enthusiast.
    • Additional Information

      Please refer to your vehicle handbook to confirm the suitability of this product for your motorcycle.

      To view a copy of the Fitting Guide click here

  • Rated 4 out of 5 by 3 reviewers.
    Rated 5 out of 5 by Power to the plug The bike was misfiring on the original NGK twin head plugs. Stuck these iridiums in and issues resolved. Time will tell whether they are worth the extra money for longevity but I am well pleased so far 26 October 2015
    Rated 3 out of 5 by Iridium Plugs These replaced the OEM plugs in a 2000 reg Kawasaki ZX-12R. Stops all of the misfiring and poor throttle response. Expensive from Halfords but they did have them in stock where others never, 27 September 2013
    Rated 4 out of 5 by First class product Fitted as soon as possible immediated improvement in startup and smoothness of running 02 July 2013
    • 2016-10-26 T10:27:55.658-05:00
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  • Standard Delivery

    Standard Delivery

    FREE within 4 working days on all orders over £30 (Halfords products only)


    Premium Delivery

    Next Day Delivery

    Order by 8pm for delivery tomorrow (Mon - Fri)


    Elite Delivery

    Next Day Delivery

    Order by 8pm for delivery tomorrow (Mon - Fri)


  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

    You can purchase products supplied by Halfords and selected other suppliers on

    Checkout is always via and all payment will be taken via In checkout the products will be split into separate deliveries for each supplier.

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    Price Seller Info Purchase

Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

NGK Motorcycle Parts & Manuals

NGK Iridium Motorbike Spark Plug CR9EIX9

£10 NGK Iridium Motorbike Spark Plug CR9EIX9 offers superior anti fouling and extreme ignitability.