Can anyone give a quick tutorial on what the codes on spark plugs mean?
for my 83 VR (1200) The manual says I need DGK DPR8EA-9 or X24EPR-U9(Nippon Denso)
(is Nipon Denso the manufacturer???)
The plugs that are in the bike from the PO are NGK R DR8ES-L (which the largest CTC in Canada (Kingston, ON) doesn't stock!
so...what do you folks recommend?