Today we're going to review part number LC155930. This is the Lippert Trailair Air Ride 5th Wheel Pin Box, designed to fit the Lippert 1621 Pin boxes. Has an 18,000 pound weight capacity. Now this air ride pin box will replace your standard pin box that's 5th wheel trailer. It'll cushion your ride, improve your handling, and even limit the strain that's on the truck and the trailer. It does… see more >