Microsoft now sells replacement parts for Xbox controllers
, by Thibaut
It's no longer necessary to buy a new controller when your current one works funky. Microsoft has just launched a site where you can buy spare parts.
Here you'll find buttons, sticks, top cases and input PCBAs (the printed circuit board that controls the controller), even for Xbox Elite Series 2 models and Xbox Series controllers. The manufacturer also provides all the documentation required for the repairs.
Source: microsoft.com