The Thule EasyFold XT Bike Rack # TH903202 you mention will work fine for your 2021 Toyota Prius Prime, but if you're wanting something lighter and a bit more economical, the Yakima OnRamp Bike Rack # Y96FR is an excellent option, that is approximately 6 pounds lighter and can carry up to 66lbs per bike. Which is more than enough capacity to carry your bikes. view full answer...
When it comes to installing a trailer hitch on your 2022 Toyota Prius Prime I recommend Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4 inch # C11473.This bolt on style hitch has a concealed cross tube which will allow you to have more clearance for your bikes. This hitch has a maximum gross towing weight up to 2,000 pounds and has a tongue weight up to 200 pounds.
When it comes to bike racks for you 2022 Toyota Prius Prime I recommend The Thule Helium Pro 3 Bike Rack - 1-1/4... view full answer...
I have a solution for you, but the Hollywood Racks # HRLHPC1 hitch pin is not compatible with Yakima racks and they cannot be keyed alike, so they're not going to function in the manner that you're seeking. I'll also note that because the shanks on bike racks have threaded bolt holes that are unique for each manufacturer, the anti rattle hitch pins would need to be from the same manufacturer.
For that reason, you can instead use the Yakima LockUp Hitch Lock and Cable Lock for Same Key... view full answer...
The hitch lock that you need for the Kuat Beta - 1-1/4" # B202-114 is the Hitch Lock for Kuat Bike Racks - 1-1/4" Hitches # HL1. This is designed to work especially with the Beta's 1-1/4" shank. For protection of the bikes, I recommend using the etrailer Cable Lock # e98891 and looping it through your bikes and wrapping it around the rack. view full answer...