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
Aluminum Hitch Adapter, Convert 1 ¼" Hitch Receiver to fit 2" Hitch – Saris
1-1/4" to 2" Aluminum Hitch Adapter – Hollywood Racks
MaxxHaul 70355 1-1/4" to 2" (Fits class II only) Black Hitch Adapter with 4" Rise and 3-3/8" Drop - Walmart.com
Amazon.com: MaxxHaul 80875 1-1/4" to 2" Hitch Adapter With 4" Rise and 3-3/8" Drop - For Class I and Class II Receivers : Automotive
Amazon.com: X-Haibei 1-1/4" to 2" Trailer Hitch Receiver Adapter, fits for 1 -1/4 Inch Receiver 7 Inch Extension Length, 350 Lbs Tongue Weight, 5/8 inch Hitch Pin : Automotive
2'' Class III/IV to 1-1/4'' Class I/II Receiver Hitch Adapter Insert S
Reese Towpower Adapter, 2-in to 1-1/4-in | Canadian Tire
1-1/4 in. to 2 in. Hitch Adapter - SC BICYCLES
PART: Two Piece Filler Plate to convert 1 1/4" to 2" Hitch - Allen.Bike
Hitch Adapter - 2" Adapter for 1-1/4" Hitches
Hornet Outdoors 1-1/4 in. x 2 in. Receiver Hitch Adapter at Tractor Supply Co.
Hitch Adapter Increase 1-1/4" to 2"
1 1/4 to 2 Hitch Adapter | Purchase a 2 to 1 1/4" Trailer Hitch Adapter Online - JEGS
2 Inch to 1-1/4 Inch Hitch Adapter | Buyers Products
MaxxHaul 70033 2-in to 1-1/4-in Hitch Adapter in the Trailer Hitch Receivers department at Lowes.com
Hitch Adapter, 1-1/4 in. to 2 in. (for accessories only) #1804030
CR Brophy Hitch Adapter 1-1/4" to 2" Trailer Hitch Receiver with 5" Rise | eBay