Not exactly bicycle repair, but would you run this? 1 1/4 to 2 inch riser and extender hitch to a Thule bike rack with a 1 1/4 to a 2 inch adapter : r/bikewrench
1.25" to 2" Hitch Adapter Kit
Reese Towpower Adapter, 2-in to 1-1/4-in | Canadian Tire
MaxxHaul 1-1/4 in. to 2 in. Class II Hitch Adapter with 4 in. Rise and 3-3/8 in. Drop 70355 - The Home Depot
2" to 1-1/4" Hitch Reducer | Discount Ramps
1 1/4 to 2 Hitch Adapter | Purchase a 2 to 1 1/4" Trailer Hitch Adapter Online - JEGS