No such thing. Did you actually measure them? Because I'd almost guarantee those are just reproduction Mopar 11.75" rotors. They use the same 73+ spindles, the same calipers, and the same caliper brackets. Just false advertising. They also don't use Timken bearings or seals. And who knows what you're getting for ball joints or hardware. There are several threads about the MBM/Piratejack rotors having out of round issues.
DoctorDiff sells the 11.75" kit too. You get all Timken bearings, and actual quality parts. You get far better customer service. I priced out everything in that link, it comes to $780 from DoctorDiff, but that also includes the tapered spindle adaptors ($35). Yes, shipping would be on top of that. High quality bearings and real customer service make up any difference in price by far.
Mopar 11.75" Front Disc Brake Kit (Stage 2)
