| Author | Message | ||
     97s1 |
I was told to use the Harley Davidson brand 10R spark plugs but I'd like to hear what other people are using and part #. I have high compression pistons 10:1. I'm not starting a whos best thread but something other people can refer to. I did a search and found 2 threads on spark plugs for the S2. Thanks. So far I have found: Champion RA4HC = 10R12A NGK DPR9EA-9 or DCPR9EIX Check this out also: http://www.harley-performance.com/harley-spark-plug.html (Message edited by 97s1 on June 08, 2008) (Message edited by 97s1 on June 08, 2008) |
