This is a replacement lower pillowball spacer for the Air Lift Performance Series struts. Pillowball spacers are designed to provide the proper amount of spacing between the upper strut mount and the bag so that that when it flexes, the mount does not come in contact with the bag itself. If you're not sure which size you need for your application, contact a Bag Riders air ride specialist for more information!
This product is brought to you by Bag Riders and is not affiliated with or endorsed by Air Lift Performance. Bag Riders is not an authorized distributor of Air Lift Performance.