Quote:
Originally Posted by Dannobre
R6725-10.5/11?
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^ These are over 30+ years old.
Platinum Platinum combo out of an old Racing Beat catalog lol......... the later R7420 Iridium center option is far superior, much longer lasting and better performing.
It is an acceptable plug, but just not as good as the one I have been using for the last 10 years.
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Last edited by RICE RACING; 02-11-2013 at 04:20 AM.
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