The pivot cup sits in the baseplate of the truck and holds the base of the hanger. This works with the bushings to allow the hanger to turn or "pivot". Pivot cups will need to be replaced after wear and tear. Pivot cups come in different durometers to hold the hanger base tight or relaxed. To read more on pivot cups, roll down to our Glossary. Our staff is happy to answer an questions to help find the right pivot cup for your skating style.