TrailAir Replacement Pin Box for a Lippert 1621 Pin Box Rated for 21,000 Pounds
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.
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 Air Ride 5th Wheel Pin Box - Lippert 1621 & 1621HD - 21,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 21000 lbs GTW
- Fixed Turret
- Lippert 1621HD
- Lippert
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: How To Determine Which Pin Box I Have and What Replacements Are Available
- Q&A: Comparing Rota-Flex and Gen-Y 5th Wheel Pin Boxes
- Q&A: Comparison Between Trailair Flex Air and Gen-Y Executive Replacement Pin Boxes
- Q&A: Should the Air Bag on a Trailair Air Ride Pin Box Be Filled Before or After Coupling to Tow vehicle
- Q&A: How to Determine the Pin Box Manufacturer and Model on a 5th Wheel Trailer
- Q&A: Determining Pin Box Make and Model to Choose Correct Replacement Pin Box
- Q&A: Difference Between Long and Medium Pin Box Style When Selecting Replacement
- Article: Sidewinder with Rotating Turret for Short Bed Pickups
- Article: Fifth Wheel Trailer Hitch Information and Installation Tips
- Article: Best Camper Jacks
- Article: Ram Trailer Tow Prep Package
- Article: Hitch Adapters and Extenders
- Article: Gooseneck to 5th Wheel Adapters