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Old 06-23-2008, 07:14 PM
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Pablo Pablo is offline
Master Bike Builder & Forum Sponsor
Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,649
Default Re: Spark Plug Question

The 7 in theory is a slightly cooler plug than the 6 or the 5.

Lots of good info here:

Tech Info - Spark Plugs Overview

I run the 7 and like it the best of any plug....
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