They're made by Recon at least the LED ones are. www.gorecon.com
Edit: The ones danimal got are not the Recon ones. Frankly for side markers, the one he purchased are probably the way to go, as I don't know that you really need to have LEDs there. Especially when they're about half the cost. Doesn't look like they make the turn signals though, so recon's $100 option looks like the only one for purchase. Really pretty easy to do them yourself though with VHT nightshades.
AEV: Hood, Skidplate & Bumper, jackstand and Badging Expedition One Rear Bumper,RE 4.5" Long Arm Kit,5.13s, Black Riddler Diff Covers, Hypertech Airaid CAI, PIAA 540s w/flush mounted switch, Flowmaster 40, 325/60/22 BFGs and the list goes on...