RY10W is difficult to find in LED, I was following a post on a BMW forum for a solution as those bikes use the same bulbs. Some are taking a more common 1156 bulb and removing one on the posts to fit the ry10w socket. Considering you will need resistors also, I decided to that I would just go with a set of aftermarket indicators instead.
http://www.donsbulbs.com/cgi-bin/r/b.pl/ry10w~ece.html