Replacement Pin Box to Reduce Chucking when Towing a Big Horn 5th Wheel Trailer with Chevy Silverado

Updated 07/27/2012 | Published 07/25/2012

Question:

I just bought a 35ft Big Horn 5th wheel. Dealer put on a 16K Reese hitch. My pin box is A lippert 1621HD. I was getting a lot of chucking when I pull it with Silverado 2500 HD with a 61/2 ft bed. I added air lift bags over the leaf spings that took away about 50 - 60. What whould be my next step?

asked by: Joe H

Expert Reply:

An air ride pin box will work well in reducing vertical and horizontal shock when towing your 5th wheel trailer. Since you have a 1621HD pin box you would need to go with the 5th Airborne coupler, # 5AB-E1621-610. This coupler can reduce chucking by as much as 60 percent and vertical shock by as much as 44 percent. I have included a link to the installation instructions and an FAQ on 5th Airborne couplers for you.

expert reply by: Michael H