I think what you're actually looking for is a hitch with a 2" receiver that is typically associated with Class 3 hitches. For your 2022 Chevy Bolt EV we have the EcoHitch # 306-X7359.
This doesn't quite meet the capacity standards of a Class 3 with a 2,000 lb max gross trailer weight and 300 lb tongue weight. However, a higher capacity isn't important since you will likely be limited by your vehicle. Make sure to consult your owner's manual to find your towing/tongue weight capacity.
I... view full answer...
The EcoHitch Hidden Trailer Hitch Receiver # 306-X7359 you were looking at is the correct hitch for your 2017 Chevy Bolt EV. This features a 2" receiver and a bolt-on installation. It also comes with a limited lifetime warranty. view full answer...
I spoke with my contact at Thule and was able to confirm that the Thule Roof Rack Fit Kit # TH45KE referenced in your question is confirmed to fit your 2017 Chevrolet Bolt EV as long as it has the flush mounted rails.
To complete the roof rack system, you will just add the Thule Feet # TH710601 and the two 47 inch WingBar Load Bars # TH711220. This will give you an extremely quiet roof rack with a weight capacity of 165 pounds. view full answer...