Old post but I have a photo of the fog light bulb found on the 2020 CR-V and I assume the 2021, US market with the round housings, this is from my EX-L. It’s a little short proprietary “button” LED bulb with a proprietary connector, it is not the H8 bulb some sites have listed for the 5th Gen refresh. The only upgrade I have seen are the $150 kits on EBay that are a horizontal light bar of 4 LED emitters, and I have no idea if it’s an actual upgrade on the light but I seriously doubt it is at that price point considering this replaces the entire housing & plastic insert in the bumper that the housing is mounted to. I’m sure they are just like the OEM fog lights and 95% of all OEM fog lights in that they are decorative, not functional like say a set of Morimoto X8 fog lights are. I think the only option is to retrofit the bumper insert to take a set of real fog light housings such as the X8, this ain’t upgradable like the hi & low beams by just replacing the bulb as you can on a 2017 - 2018 with the rectangular fog light housing. I want to keep the round housing, it’s part of the appeal I think.