King Pin to Bolt Hole Measurement for the Trailair Flex Air # LC328492

Question:

I have a 2018 Chevy 3500 Dually, with a BandW Companion Hitch that I purchased from you to tow my 40ft Keystone Avalanche. I currently have the 18K, 1621 Rotoflex installed on my Trailer and I am looking for an upgrade. Move up to the Flexair. I am trying to find the actual dimensions on the 18K, 1621 Flexair, so that i can see where the pin is going to be located and how much height adjustment I will need to make, if any, on my Hitch in my Truck. I am currently at the highest point, for clearance purposes. Thanks.

asked by: Craig H

Expert Reply:

I reached out to my contact at Lippert who was able to give me a spec sheet for the Trailair Flex Air # LC328492. If you check out the picture I attached you can see that from the back of the pin box it measures 19-9/16" down and 29-9/16" away from the bottom of the king pin. Using the 2" apart on center measurement of the mounting holes you can see that the king pin will sit about 13" below the lowest set of bolt holes.

expert reply by: Jon G