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NGK Iridium IX Spark Plug Box of 4 (DR9EIX)

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$90.60
$90.60
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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.

  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Trivalent metal plating for superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency and durability
  • Fine iridium tip ensures durable and consistent spark

This Part Fits:

Year Make Model Submodel
1992 Ducati 888 Strada Base
1980-1981 Honda CB900C Custom Base
1981 Honda CB900F Super Sport Base
1985-1986,1988-1990 Kawasaki EN450A 454 LTD Base
1990-1996 Kawasaki EN500 Vulcan 500 Base
1996-2009 Kawasaki EN500C Vulcan 500 LTD Base
1994-1996 Kawasaki EX500 Ninja 500 Base
1997-2009 Kawasaki EX500 Ninja 500R Base
1981-1982 Kawasaki KZ305 CSR Base
1982 Kawasaki KZ305B CSR Belt Base
1987-1988 Kawasaki KZ305B LTD Base
1986-1987 Kawasaki ZL600 Eliminator Base
1990-1991 Kawasaki ZR550 Zephyr Base
1991-1992 Kawasaki ZR750C Zephyr Base
1985-1997 Kawasaki ZX600 Ninja 600R Base
1990-1997 Kawasaki ZX600 Ninja ZX-6 Base
1995-1997 Kawasaki ZX600 Ninja ZX-6R Base
2003-2004 KTM 660 Rally Base
1992-1993 Lamborghini Diablo Base
1994 Lamborghini Diablo SE30
1994-1996 Lamborghini Diablo VT
1998 Moto Guzzi V10 Centauro GT Base
1998 Moto Guzzi V10 Centauro Sport Base
1980-1981 Suzuki GS250T Base
1982-1983 Suzuki GS300L Base
1983-1986 Suzuki GS550E Base
1983-1986 Suzuki GS550ES Base
1983-1986 Suzuki GS550L Base
1997-2005 Suzuki GSF1200S Bandit Base
1989-1992 Suzuki GSX-R1100 Base
1986-1987 Suzuki GSX-R750 Base
1988-1993 Suzuki GSX1100F Katana Base
1991-1993 Suzuki GSX1100G Base
1983 Suzuki XN85 Turbo Base
1973-1974 Yamaha TX500 Base
NGK Iridium IX Spark Plug Box of 4 (DR9EIX)

$90.60

  • Fast shipping

    Ordered a product and it arrived the next day. Super impressed with the speed and the careful packaging.

    Jordan Smith
    Seattle, Washington

  • Excellent service

    Customer support was helpful; they resolved my issue in minutes. Really appreciated the follow-up email to ensure satisfaction.

    Taylor Christos
    Austin, Texas

  • Great selection

    Wide variety of products across the range. Found everything I needed in one place, very convenient.

    Alex Williams
    London, England

  • Top quality

    The product I bought exceeded my expectations. Top-notch quality, thoughtful design, and it came beautifully packaged.

    Sam Davis
    San Francisco, California

  • Reliable store

    Have ordered multiple times, always received exactly what was described. Products are genuine and fully functional.

    Casey Brown
    Denver, Colorado

  • User-friendly website

    Easy to navigate and make purchases. A hassle-free shopping experience with clear descriptions and transparent pricing.

    Riley Wilson
    Boston, Massachusetts

  • Smooth checkout

    Checkout was quick and straightforward. My order confirmation came through instantly, and everything arrived exactly as expected.

    Morgan Lee
    Portland, Oregon

  • Great value

    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.