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[stevem]

Hi there wot spark plug for 1991 500 with amal carb,mildly gas flowed (dremmeled)and free flowing conical air filter and exhaust

steve

[jaffa90]

Mine came with a NGK B8ES,it`s a 535cc lightning with Mikcarb and conical free flow air filter (don`t like the idea)and free flow exhaust,as said it`s slightly on the rich side but don`t know when/where yet.

[Beezabryan]

BR8ES with solid copper HT lead.....B8ES with non copper HT lead