Some of that may be due to powder coat choice. Not sure how they are handling it now with the crazy state of affairs when it comes to supply chains,,, but when I ordered my kit, the color you chose could change the time. I think at that time they manufactured black regularly,,, but if you wanted a different PC color, it would take longer.their website says they're 4-8 weeks out
I ordered my limit strap kit a few months ago,,, it took about 6 weeks from order to shipment for that. Pretty sure there are no color options for the strap kit.