James, at this moment we do not have any clue if there are going to be any snap on custom towing mirrors for a 2023 Subaru Outback Wagon. All that is available right now are going to be universal towing mirrors like the CIPA Universal Fit Towing Mirrors # 40375-2. view full answer...
The K-Source Universal Towing Mirrors item # KS3891-2 snap on to the tops and bottoms of the factory mirrors on your 2023 or 2024 Ford Bronco and then you use the included snaps to tighten them down and make sure they're secure.
No, we also have them with flat lenses with item # KS69ZR. These mount in an identical manor but the 7-3/4" tall x 5-1/8" wide mirror face offers a flat view.
We haven't had a chance to test these out on a Bronco but I have linked a couple review videos below... view full answer...
To get the replacement clip for your # KS3891-2 you will need the Replacement Ratcheting Straps for K-Source Universal Towing Mirror # KS3891STR. The clip isn't available individually. view full answer...