Understanding compatibility is easy, there are three simple ways to tell if you have a UDH:
Step 1: Look at your bike. We imprint the UDH logo onto all our hangers, which is the easiest way to tell. Some brands like Santa Cruz produce their own UDH hangers which can be difficult to identify. If you are unsure of your hanger, move on to step 2.
Step 2: For MTB/E-MTB - search for your bike in the Full Mount Chain Length Guide to verify compatibility. Simply select the Brand, then look for your model and year. If your bike is on the list, congratulations! You have a UDH. If you are still unsure, consider step 3. For Gravel/Road - please refer to the SRAM Bike Finder to verify compatibility.
Step 3: Ask your frame manufacturer. They know best when it comes to their own products and will be able to give you the best answers possible if you are still doubting the results of the first two steps.
Learn more about UDH here.