Will a PS4 or PS5 thumbstick fit on my Xbox One or Xbox Series X controller?

Unfortunately not, the thumbsticks from standard or custom PS4 controllers and PS5 controllers will not fit into or work with standard or custom Xbox One controllers and Xbox Series X controllers.

Fortunately, customising a PS4 controller or PS5 controller with Xbox thumbsticks will work perfectly. Since the Xbox thumbsticks are positioned higher than standard PS4/PS5 thumbsticks, this can give you better thumbstick control, especially while playing FPS games.