Are Iridium spark plugs worth the expense or are the standard plugs just as good?
Iridium plugs claim increased horsepower, improved running, smoother power delivery etc......
Spark Plugs
- StuMiller
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Spark Plugs
2007 ZX6 - Road bike
- Wattie
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Re: Spark Plugs
i think the main reason for iridium plugs is long lasting.
they weren't invented when your bike was, so i cant say it needs them, but if you have the cash, i guess it cant hurt.
get them from us ebay, cheaper than in the shops here if you can wait.
they weren't invented when your bike was, so i cant say it needs them, but if you have the cash, i guess it cant hurt.

get them from us ebay, cheaper than in the shops here if you can wait.
Wattie #55
ZX10R "The Crim"
ZX10R "Gumby"
Proudly Supported by Allfixed Automotive 9634 1455
sam & srt, survived
RGM, left a message
ZX10R "The Crim"
ZX10R "Gumby"
Proudly Supported by Allfixed Automotive 9634 1455
sam & srt, survived
RGM, left a message
- Blurr
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Re: Spark Plugs
they last alot longer.
I wouldnt use anything else on the newer injected models but for your model 6r I am not sure they would make a difference
I wouldnt use anything else on the newer injected models but for your model 6r I am not sure they would make a difference

Chariot of Fury 50cc 2stroke Race bike
Team Gumby in red
SAM & SRT Survived
Team Gumby in red
SAM & SRT Survived
- StuMiller
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Re: Spark Plugs
Fair points guys, thanks.Blurr wrote:they last alot longer.
I wouldnt use anything else on the newer injected models but for your model 6r I am not sure they would make a difference
The standard are the NGK CR9E plugs so I'll stick a new set in and go from there.
Cheers!
2007 ZX6 - Road bike
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Re: Spark Plugs
I just use standard plugs in my 7r......Denso U27ESR-N (equilivant to NGK CR9E).
Bought them off my local mechanic(Darcy - Bike Performance Enoggera)....... 4 plugs for $18.
Bought them off my local mechanic(Darcy - Bike Performance Enoggera)....... 4 plugs for $18.

Glenn
2009 ZX10R
2009 ZX10R