Replacement Pin Box Recommendation for StarCraft Fifth Wheel Trailer
Question:
I have a solid mounot hidden hitch brand , 2001 year 18 k will the lipped 1621 be the best match and work fine with an older starcraft 5 th wheel camper if the bolt holes match. Would this be all I would need? I dont want to buy a new hitch if I dont have to
asked by: James C
Expert Reply:
The best pin box for you will depend on what you want to accomplish.
In a 'good, better, best' scenario, the Lippert Rota Flex # LC328330 would be the good option. The king pin sits on a rubber dampener that allows the king pin some fore and aft movement which helps to absorb some of the chucking and jarring by helping to isolate the trailer's movement from the truck. The Trailair Air Ride, part # LC158778 would be the better option. The inflatable air bag and shock absorber work together to provide great ride quality, further isolating any noise or harshness in the ride of the trailer from the truck towing it. The Best option would be the Trailair Flex Air, part # LC328492 which combines the dampeners used by the Rota Flex with the air bag and shock absorber used by the Air Ride for exceptional ride quality.
Closely examine your pin box, there should be a sticker or tag on it somewhere listing the manufacturer and model number. If you can't find that, you'll want to compare the dimensions of your existing pin box with those shown on the diagram I've provided for you, to ensure that you do indeed have a Lippert 1621 pin box.
If your truck has the 5-1/2 foot bed, you'd need to use a Reese Sidewinder, like # RP34FR for a 20K non-air ride model or # RP61422 for a 16K capacity air ride. I'll link you to an FAQ article that explains how the Sidewinder works.
I've linked you to product description videos featuring the pin boxes I've mentioned.
![Mike L](https://images.etrailer.com/static/images/catg/people/166_tn.jpg)
Products Referenced in This Question
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 >
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 >
Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Provides Turning Clearance
- 20000 lbs GTW
- Rotating Turret
- Fabex 663
- Fabex 665
- Lippert 0719
- Lippert 1621
- Lippert 1621HD
- M and M 663
- M and M 665
- Lippert Rhino
- Reese
more information >
Product Page this Question was Asked From
Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 or 1621HD - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- Lippert
more information >
Featured Help Information
Instructions
Miscellaneous Media
![sidewinder](https://images.etrailer.com/static/images/catg/faq/sidewinder_150.jpg)
![Lippert Components Fifth Wheel King Pin - Pin Box Upgrade - LC155930 Review](https://images.etrailer.com/static/images/faq/Demo-Lippert-Components-Fifth-Wheel-King-Pin-LC155930_150.jpg)
![Lippert Components Fifth Wheel King Pin - Pin Box Upgrade - LC328330 Review](https://images.etrailer.com/static/images/faq/Demo-Lippert-Components-Fifth-Wheel-King-Pin-LC328330_150.jpg)
![Review of Reese Fifth Wheel King Pin - Pin Box for Short Bed Trucks - RP34FR](https://images.etrailer.com/static/images/faq/Demo-Reese-Fifth-Wheel-King-Pin-Pin-Box-for-Short-Bed-Trucks-RP34FR_150.jpg)
![Lippert Trailair Flex Air 5th Wheel Pin Box Manufacturer Demo](https://images.etrailer.com/static/images/faq/mdemo-lippert-air-pin-box-lc328492_150.jpg)
Continue Researching
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: Comparing Rota-Flex and Gen-Y 5th Wheel Pin Boxes
- Q&A: How To Determine Which Pin Box I Have and What Replacements Are Available
- Q&A: Rota-Flex or MORryde to Reduce Chucking to Replace Lippert 1621 Pin Box
- Q&A: How to Determine the Pin Box Manufacturer and Model on a 5th Wheel Trailer
- Q&A: Does Truck with 6-1/2 ft bed Have to Use Slider Hitch for Turning Clearance with Fifth Wheel Hitch
- Q&A: Recommended 5th Wheel to Gooseneck Pin Box for 2009 Keystone Cougar 316QBS
- Q&A: Compatible Replacements For A Lippert Rhino Box Pin Box On A 2021 Cedar Creek 37MBH
- Article: Sidewinder with Rotating Turret for Short Bed Pickups
- Article: Gooseneck to 5th Wheel Adapters
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