  85CC TO 110CC TO USE THE "8" THEY ARE THE SAME REACH AND DIAMETER AS THE STOCK NGK PLUGS LIKE THE C7HSA ... what one of our good customers said ........... Just an FYI..... I was running on the dyno this weekend and I ran with a standard ngk on my 88 kit then I ran your twin fire a few seconds later and got .3hp more.... I thought that was interresting.... Justin |