I've not personally dealt with this company but I did find this under the "Shipping Terms" link on their website.
"We are currently experiencing extended production times for non-essential and non-emergency orders, with lead times averaging approximately 6 months. Some products may require...
I'm running the MRT Trail Rated Axle Back. Can barely hear it in the cabin but outside has a nice low tone. ZERO drone.
https://www.shopmrt.com/2021-Ford-Bronco-MRT-Trail-Rated-Axle-Back-p/90r232.htm
I would stick with Ford sensors. They auto learn once installed and after driving a bit.
https://www.steeda.com/ford-performance-M-1180-D-bronco-tpms-activation-tool-kit-5