TrailAir Flex Air Pin Box Recommendation for a Lippert 1621 Pin Box

Published 01/29/2015

Products Featured in This Question

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

(94)

$1541.87

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

(203)

$1710.46

Question:

The TrailAir Tri-Glide Air Ride King Pin, part # UF35-946229, is the newer king pin that has a redesigned lower jaw. The lower jaw has 3 steel rods that act as rollers and will let the jaw glide forward and back during towing. This will help reduce the chucking back and forth movement that normally occurs when towing a fifth wheel. QUESTION: Does lower jaw that has 3 steel rods that act as rollers and will let the jaw glide forward and back during towing have any buffeting control of the back and forth motion.....or is there a self-entering control on this system ? Thank you I look forward to your reply

asked by: Dennis

Expert Reply:

Actually the Tri-Glide has been replaced by the Trailair Flex Air part # LC328492 which uses one roller instead of three. The # LC328492 fits the same Lippert 1621 pin box as the # LC158778 that you referenced.

The design of this pin box will drastically reduce chucking and virtually eliminate bounce an jarring. It is basically an advance suspension system for the pin box of your trailer that will give you the smoothest ride quality possible. It will "self-center" like you asked about meaning that it will return to a neutral position when there aren't bumps. It won't just move around at will.

expert reply by: Jameson C