There are kits all over ebay. Some look like they are just using marker lights and a3 way toggle switch and others have the small led lights and a lever style switch. None of them will be self cancelling so it would be what kind of switch you wanted.
I've done a few on the 4 wheelers where I just used a 3 way toggle and hooked the flasher in the main power going to the switch. One guy wanted hazards (for plowing snow) which I took the easy way and just added another toggle to connect the blinkers.