NGK CR8EIX - Iridium IX Spark Plug

    NGK CR8EIX - Iridium IX Spark Plug

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    Rating 4.91 of 5 (16 Reviews)

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    NGK CR8EIX - Iridium IX Spark Plug

    Designed specifically for the performance enthusiast. Iridium IX® offers extreme ignitability, improved throttle response and superior anti fouling.
    • Fine Iridium tip ensures high durability and a consistently stable spark
    • Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
    • Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
    • Outstanding acceleration, high fuel efficiency and durability
    • Ultimate design, technology and performance
    Plug Specifications:
    • Thread Diameter - 8mm
    • Hex size - 5/8
    • Firing End - High performance Iridium
    • Resistor type
    • Item # 18448

    FitmentView All

    Aprilia Models

    • Atlantic 200: 2004
    • Scarabeo 150: 2000 - 2003
    • Scarabeo 200: 2009, 2013
    • Scarabeo 250: 2005 - 2006, 2008
    • Sportcity 250: 2007 - 2009, 2012 - 2013
    • Sportcity Cube 250: 2009

    Arctic Cat Models

    • 366 4x4 Auto: 2008 - 2009
    • 400: 1998
    • 400 4x4: 1998
    • Bear Cat 454: 1997 - 1998
    • Bear Cat 454 4x4: 1996 - 1998

    Husaberg Models

    • FC400: 1998 - 1999
    • FC600: 1995 - 1996, 1999 - 2000
    • FE350: 1995 - 1996
    • FE400: 1997 - 1999
    • FE501E: 1996 - 1999
    • FE600: 1995 - 1996
    • FE600E: 1999 - 2000
    • FS600E: 1999
    • FX501E: 1999
    • FX600E: 2000

    Husqvarna Models

    • TC250: 2002 - 2005
    • TC450: 2004 - 2010
    • TE400: 2001
    • TE410: 1998 - 1999

    Hyosung Models

    • GT250: 2005 - 2007
    • GT250R: 2007
    • GT650: 2005 - 2007
    • GT650R: 2006 - 2007
    • GT650S: 2005 - 2007

    Kawasaki Models

    • KL250 Super Sherpa: 2000 - 2003
    • KLX250R: 1994
    • KLX250S: 2006 - 2007
    • KLX300: 1997 - 2005
    • KLX300R: 2005 - 2007
    • KLX400: 2003 - 2004
    • KLX400S: 2003
    • KX250F: 2004 - 2010

    KTM Models

    • 400 EXC: 2000 - 2002
    • 400 LC4: 2000
    • 400 MXC: 2001 - 2002
    • 400 SX: 2000 - 2002
    • 520 EXC: 2000 - 2002
    • 520 MXC: 2001 - 2002
    • 520 SX: 2000 - 2002
    • 950 Adventure: 2003 - 2005
    • 950 Adventure S: 2003 - 2005
    • 950 Supermoto R: 2006 - 2007

    Piaggio Models

    • Beverly BV200: 2003
    • X8 250: 2006
    • X9: 2005 - 2009

    Suzuki Models

    • DR-Z400: 2000 - 2007
    • DR-Z400E: 2000 - 2007
    • RM-Z250: 2004 - 2006
    • SV1000: 2003 - 2007
    • SV1000S: 2003 - 2007
    • SV650: 1999 - 2007
    • V-Strom 1000: 2002 - 2007
    • V-Strom 650: 2004 - 2005

    SYM Models

    • Citycom300i: 2009 - 2010, 2013
    • HD125: 2009 - 2010
    • HD200: 2009 - 2010, 2012

    Vespa Models

    • ET4: 2001
    • GTS 250: 2006 - 2007, 2009 - 2010

    Yamaha Models

    • FJR1300: 2003 - 2005
    • Grizzly 300 Auto: 2012 - 2013
    • Raptor 700R: 2006 - 2009, 2011
    • WR250F: 2001 - 2006
    • WR400F: 1998 - 2000
    • WR426F: 2001 - 2002
    • WR450F: 2003 - 2009, 2011 - 2012
    • YFZ450: 2004 - 2009, 2013
    • YFZ450R: 2009 - 2014
    • YFZ450X: 2010 - 2011
    • YZ250F: 2001 - 2014
    • YZ400F: 1998 - 1999
    • YZ426F: 2000 - 2002

    Product Reviews Showing 15 of 16 Reviews

    Overall Rating: 4.91 of 5

    (16 Reviews)
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    What Other Riders Are Saying...

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    ngk cpr8eix

    Great product! Huge difference in performance esp on morning cold starts,uphills felt easier,and highway runs are silky smooth.im.running shell advance ultra synthetic oil and shell v power fuel on honda xr125l 2014.

    Goldwyn - March 17, 2014

    (Los Angeles, CA)

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    excellent product; great service from MSS!

    I just installed these plugs on my 2006 Yamaha FJR1300 and synched the throttle bodies at the same time. The engine is much more responsive and runs smoother at idle. It's almost like adding a mini turbo boost. I'm just wondering why Yamaha didn't put these on the bike as original equipment. They are so much better.

    Daniel - November 12, 2013

    (Glendale, CA)

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    great product

    I've used NGK for years. The prolonged life of these plugs is worth the extra cost!

    Tim - September 06, 2012

    (Hindman, KY)

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    Not sure if there's a difference

    Now, as most of us know, the improvement felt with any new plug is mainly due to degradation of the old plug. I bought these mainly for the anticipated longer durability of which I can only read about. If they last twice as long, then they are worth it because even though they cost twice as much, the real savings is in the labor of changing the plugs, which on the 2002 Suzuki SV650S is significant.

    Mark - December 28, 2011

    (Manitou Springs, CO)

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    NEEDS TO BE STANDARD ON EVERY BIKE!!!

    I replaced the standard plugs in my FJR1300 with these and my mileage went from 38-39MPG to 41-43MPG and the power is awesome!!! The front end lifted several times this week avoiding NY and NJ drivers without maxing the throttle!!! You've got to get these for your scooter!!!

    Wick - November 04, 2011

    (Everywhere, AA)

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    Iridium Plugs on V-Strom 650

    When plug changes are a PITA like on the V-Strom, it's nice to have a plug that will last 25k+ miles. Some Strom owners have reported many more miles than this without any trouble. Fancy plugs don't improve performance significantly unless the old ones were really shot, so any increase in performance is probably imagined. Buy these anyway for the longevity.

    Bob - July 08, 2011

    (Eastern, PA)

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    spark plug

    seems to work just fine. would buy again.

    Colby - June 01, 2011

    (pittsburgh, PA)

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    iridium plug

    initially tried these in a '78 yamaha xs650e after reading about improved performance obtained by Heiden tuning, noted a little slower to start, but better overall performance ( smoother acceleration and @ idle), subsequently tried'em in "07 dl 650 k7 with perceptibly smoother running engine result.

    tom b. - May 31, 2011

    (bozeman, MT)

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    Longevity Update on NGK CR8EIX

    For those who want to know. I ride a DL650K6 and ran my first set of NGK Iridium plugs for 28,000 miles with virtually no signs of wear. Since I was doing the scheduled valve and throttle body check/adjustment, I installed a fresh set. I have since put 38,000 miles on those plugs and they still look fine. Talk about cost benefit!

    Wayne K. - January 13, 2011

    (Morgan City, LA)

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    So far, so great

    I put these plugs in my '09 Suzuki V-Strom DL650A at 7,500 miles. I've only put another 1,500 miles on it since then, and it may be my imagination, but it feels like the engine is running "smoother." (not that it was ever rough). I think my mileage might've even gone up a bit. No idea how long they'll last, hence the 3-star rating for "durability."

    Eric - September 01, 2010

    (Arlington, VA)

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    Best plug you can buy!

    Iridium plugs offer a noticeable improvement over standard plugs in my bike. It starts quicker and idles smoother. Gets a little better gas mileage too. Now these plugs won't give you 5 extra H.P., what they do give you is enough to warrant them.

    Mike - May 27, 2010

    (Kersey, PA)

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    NGK - Iridium IX Spark Plug

    We bought and installed this plug in a KX250F and it seems to start a whole lot easier than with the used/dirtied up plug that came with it from the dealer. As cheap as plugs are, I would change them rather than trying to clean them. This looks like a plug you can find in an auto parts store, which is where I'll likely shop for a replacement. I might even try to find a cross reference to a Bosche Platinum plug, which I have had a lot of success with in our vehicles.

    Jamie H. - February 15, 2010

    (Brighton, CO)

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    Spark plug

    Fit and did the job

    Jason - July 14, 2009

    (Meriden, CT)

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    NGK Iridium Spark Plug

    I'm a 'Mature Gearhead'. Plugs are installed on my '06 Suzuki DL650K6 'Wee" Strom which I ride every day in any weather. Standard plugs required replacement every 14,000 miles and cost $5.00+ each. I had just completed services to the valves and trottle bodies (including new plugs)and the engine was running great (always did). I've been wanting to try Iridium plugs, but all the places I inquired at sold them in pack qty only. I didn't want to spend $40.00+ and find out the bike didn't like them. Then I noticed Motorcycle Super Store sold the Iridium plugs per each. I ordered a set and immediately installed them upon receipt. I immediately noticed a smoother idle and the roll-on performance 'feels' improved. Fuel mileage improved by about 1-mph. I checked the plugs at 9500 miles and am impressed; clean and virtually no wear. Wonder if these plugs will go 25,000?

    Wayne Katsura - April 08, 2009

    (Morgan City, LA)

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    Now we're talkin

    Wow! I never thought a spark plug would make a difference but after installing this new IX plug I hit the road for a test run. Right away I could feel a difference. The engine came alive and felt happy. Now it revs a little faster, has a little more power, and responds quicker. I can't explain it but it works.

    Yorgo - January 09, 2009

    (Miami, FL)
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