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Old 11-30-2019, 09:43 PM   #1
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What to replace a 1621 pin box?

I have a fiver with the 1621 (21K#) rigid pin box. I want to replace it with some type of cushioned pin box. I purchased a Trailair Flex but found the pin height 7 inches lower than the 1621 pin which would have the trailer quite nose high (and tail low). I have the hitch in the truck as low as it will go.

Is there a cushioned pin box that has the same pin height as the 1621?


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Old 12-01-2019, 08:57 AM   #2
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We replaced ours with a Moryde pin box, and love it. If I remember correctly it didn't change the height and actually leveled out my fiver. Took the chucking out about 90 percent. Having said that I also have air bags in the truck to take the out the up and down movement. The combination has made our trips a lot more pleasant.

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Old 12-01-2019, 09:15 AM   #3
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I bought a Trail-Air pin box to replace the Moryde pin box. Only 2 of the mounting holes lined up for the height I wanted, so I drilled 4 new mounting holes and bolted it on.
2018 Chevy DRW
2008 Carriage Cameo, F34CK3
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Old 12-01-2019, 12:44 PM   #4
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I'll second the MorRyde pin box, can't say enough about there pinbox's, when buying our last new trailer a few years back we made them take off the Roto flex LCI pin box an put on the 18K MorRyde pin box before we even took it off the lot ... It has preformed flawlessly over the past 16 to 18k miles in the past few years
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Old 12-01-2019, 10:18 PM   #5
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I love my Rota-Flex pin box, works well with no chucking.
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ace, replace

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