Just saw a thread on GM Authority and AEV is now offering the ZR2 skidplates directly on their website. I know I and others have been waiting for them to be released. Expensive, but I expected they would be.
https://www.aev-conversions.com/product/skid-plates-2019-chevrolet-silverado-1500-gmc-sierra-1500/
Doing some more reading on their webpage and was wondering about the radiator skid plate but didn't see it on the webpage. I found this in the FAQ's:
Doesn’t the Silverado ZR2 Bison / Sierra AT4X AEV Edition have a radiator skid plate as well?
Yes, however that skid plate is only compatible with ZR2 Bison and AT4X AEV Front Bumper, therefore it is only available as a service part through the dealership.