Replacing a SPB72-1621LD Pin Box with a Rota-Flex or a MORryde Pin Box with Chucking in Mind
Question:
Hello! I am looking to replace my standard pin box SPB72-1621LD with either the rota flex or the mor- ryde. Which one does a better job eliminating chucking? What would be the part number to be a direct replacement? I have a 2017 f250 crewcab short bed with a Demco autoslide hitch. Thanks!
asked by: John
Helpful Expert Reply:
If you're comparing the Tailair Rota-Flex that replaces a 1621 or 1621HD Lippert pin box, part # LC328330, with the MORryde equivalent (part # MR64VR for 5th-wheel trailers with up to 11,500-lb GVWR, and part # MR84VR for 5th-wheel trailers with 14,001 to 18,000-lb GVWR), then I recommend going with the Trailair.
The Rota-Flex is built with chucking and road shock in mind, so it utilizes a pivoting head with a built-in rubber compound. The pivoting head allows for controlled movement of king pin within your hitch, which improves handling and reduces chucking. The rubber compound absorbs the road shock. I've linked to a video review of this pin box for you to look at.
As for the direct replacement of your SPB72-1621LD, it would be one of the MORrydes from above. Look at the GVWR of your 5th wheel to determine which is the correct one for you.
Products Referenced in This Question
MORryde Cushioned 5th Wheel Pin Box for Up to 11.5K Trailers w/ Lippert 1621 and 1621HD
- Fifth Wheel King Pin
- Upgraded Pin Box
- Reduces Chucking
- 21000 lbs GTW
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- MORryde
more information >
MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert 1621 and 1621HD
- Fifth Wheel King Pin
- Upgraded Pin Box
- Reduces Chucking
- 21000 lbs GTW
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- MORryde
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 >
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