TrailAir Replacement Pin Box for a Lippert 1621 Pin Box Rated for 21,000 Pounds

Updated 04/12/2016 | Published 04/09/2016

Products Featured in This Question

Curt Air Ride 5th Wheel Pin Box - Lippert 1621 & 1621HD - 21,000 lbs

(88)

$1385.78

Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs

(192)

$1667.61

Question:

Which kingpin is best for a lippert 1621, 21,000 lb - trailair or flex air and i am very interested in a tri-glide if available?

asked by: Mark S

Expert Reply:

The Tri-Glide has been discontinued. It was replaced by the Flex Air line. The Flex Air pin box that will fit your Lippert 1621 pin box is # LC328492 but it is rated for 18,000 pounds and not 21,000. There is a TrailAir version that is rated for 21,000 pounds that will also fit. It is # LC158778.

So far, people seem to like the TrailAir model over the Flex Air model and if you are looking to match the capacity of the old pin box, which I recommend, I would go with the TrailAir model, # LC158778.

expert reply by: Michael H