I'm not sure what you are looking for or how much you want to spend but I'm pretty happy with a set I got for about $120 or so online that shipped from overseas. They came in both silver and black versions, brand was Magazi. I needed new mirrors anyways and wasn't satisfied the fork turn signals were enough since they are so close to my bright headlight.
Here's a thread I posted with some pics where you can see the silver version on my hammer: http://www.victoryforums.com/showthread.php?t=14504
I also remember looking at some nicer ones made by Rivco but they were closer to $250.
You'll probably need something to slow down the flash as with most bulb to LED conversions.