Which Cushioned Pin Box is Recommended to Replace Lippert 1621 Pin Box
Updated 06/24/2026 | Published 06/22/2026
Question:
I have a 12,000 lb 5th wheel with a lippert 1621 and capture plate for our superglide hitch. What pin boxes will work to reduce chucking and give a smoother ride? Thank you.
asked by: Doug S
0
Expert Reply:
Hey Doug, we have the Curt Flex Air cushioned pin box part # LC328492 which was designed to replace a Lippert 1621 pin box like what you have and would work great. I really like the Flex Air because it has both vertical and horizontal cushioning so it will make a huge difference in reducing chucking.
expert reply by:
Jameson C
0
Flex Air
(click to enlarge)
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Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs
- Air Ride Suspension
- Fixed Turret
- Lippert 1621
- CURT
more information >
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