Comparing the 18K and 21K Lippert 1621 Flex Air 5th Wheel Pin Boxes
Question:
What is the difference between 18000lbs And the 21000lbs flex air pin boxes Please give the details
asked by: Rudy M
Helpful Expert Reply:
The Trailair Flex Air 5th Wheel Pin Box part # LC369535 which is rated for 21,000 lbs is constructed of a thicker metal and also has beefier welds when compared to the Trailair Flex Air 5th Wheel Pin Box part # LC328492 which is rated for 18,000 lbs. The air bag and shock that is used in each of them are the same. The thicker metal and welds are what gives the former a higher weight capacity. The best option for you would be the one that meets the GVWR of your trailer though you could go higher for more of a safety margin if you wish to.
Products Referenced in This Question
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 21000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
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Mike W.
7/27/2020
I am looking at the air ride pin box and I have the LIPP 1621 HD. My camper gvwr is 18,000 lbs. What is the difference between the Air Ride, the Trail Aut and the Flex Air that you carry