The Ball Mount 3/4" Rise or 2" Drop, Extra Long # D-26 is for a 2" receiver so it physically won't fit your 1-1/4" receiver so instead you'll want to look at something like the Curt Class II Drawbar - 5" Rise - 11-5/8" Long - 3,500 lbs # C45015 which gets you within 1" of the rise you mentioned.
You can then add a hitch ball like the Convert-A-Ball Interchangeable Ball Set # 800B which gives you the ability to tow a trailer with either a 1-7/8" or 2" hitch ball.
Attached are some review... view full answer...