We do have several choices for you in a 1-1/4-inch Class I hitch for your 2013 Dodge Avenger R/T with Dual Exhaust. These can be seen on the link provided for you. I checked with my technical contact at Hidden Hitch and Draw-Tite and your dual exhaust R/T is fully compatible with these light-duty hitches.
If your intended use for the hitch is to install a bike carrier, then the hitch I suggest is the Draw-Tite # 24871. Unlike the Curt model # C11133 this hitch does not require you to use... view full answer...
The only trailer hitch receiver size available for your 2013 Dodge Avenger is 1-1/4" like what you find with the Curt # C11133 and Draw-Tite # 24871. Out of these 2 I recommend the Curt because it has a thicker powder coat and a collar at the end of the receiver.
You technically can use the Brophy Hitch Adapter # HTAD so that you can use an accessory that has a 2" shank, but using this adapter does reduce the weight rating of the hitch by 50% so right off the bat you're down to 100 lbs... view full answer...