Dunno know what they're worth nowadays or if they even still make them
but brown 1.5ohm dynacoils pack a punch about 3 times the voltage of the crusty
old factory yamaha ones and you ditch the B.S. ballast resistor when you
slap them in, the yanks on the yank xs11 site pissed their panties and
wrung their hands and said i was wrong and you had to use the 3 ohm
ones or else the bike would fry the black box and explode into raging
flames but mine have worked brilliantly and trouble-free for 30 years...
funny that...