Champion

Champion Copper Plus® spark plugs are a great choice for your Harley Twin Cam or Sportster and are the OE-replacement for the stock 6R12 factory plug.  The Champion copper plus spark plug features a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics Provides longer life; Copper core center electrode allows for accurate control of the plug's heat range, optimizing the plug's performance and adding to the longevity...

Champion Copper Plus® spark plugs are a great choice for your Harley Evolution 1340 or late model Shovelhead and are the OE-replacement for the stock 5R6A factory plug.  The Champion copper plus spark plug features a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics Provides longer life; Copper core center electrode allows for accurate control of the plug's heat range, optimizing the plug's performance and...