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![Not allowed access to Spark Plug Replacement Guide thread. [Archive] - Audizine Forums](http://i1073.photobucket.com/albums/w381/ericpaulyoung/bosch1_ngk_zps6ef6a744.gif "Not allowed access to Spark Plug Replacement Guide thread. [Archive] - Audizine Forums")
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24 hundred.
Spark plug heat ranges for classic motorcycles • Matchless Clueless
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