Flex Air Pin Box Recommendation to Replace Lippert 1621

Question

Question:

I have a 40foot 5th wheel with a standard pin box. I would like to upgrade to the Flexair pin box. I dont know if I need long jaw or short. My sticker on my current box has the following sticker info: LIPP1621 Pin box GVRW 15,500 lbs S/N S000180053 I pull with a 2015 F350 DRW long bed

asked by: Brian

0

Expert Reply:

Since your pin box is a Lippert 1621 we know exactly what Flex Air you need. For that you'd want the part # LC328492 and you'd be set. This is specifically designed as a replacement for what's on your trailer now so it will fit and work perfectly.

expert reply by: Jameson C

0

Answer 1

Trailair Flex Air 5th Wheel Pin Boxes, such as the Lippert #LC328492, are designed to replace the existing pin box on your trailer. The long and short jaw models that you referenced in your question simply refer to the type of pin box that the unit…

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Answer 2

Even though both the Trailair Air Ride #LC158778 and the Trailair Flex Air #LC369535 look similar and incorporate the air bag and shock to help improve your towing experience, the Flex Air has a few upgrades that the Air Ride does not have. The 2…

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Answer 3

In order to find the right shackle strap length to go with the Road Armor Shock Absorbing Equalizer Kit #LC696740 on your 2014 Keystone Passport you will need to measure your current shackle straps. It is important to keep them the same length as the…

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Answer 4

Because it's lighter, less expensive, has fewer moving parts and is mechanically less complicated I'd recommend going with the Gen-Y #325-GH-8040 shock absorbing pin box versus a Trailair Flex Air like part #LC328492. The Trailair features a…

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Answer 5

If I am not mistaken, Anderson will allow for a cushioned pin box to be used with their Anderson Ultimate 5th Wheel Hitch that attaches to a gooseneck hitch like the B&W Turnoverball Underbed Gooseneck Trailer Hitch. I would double check with…

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Answer 6

Great question, Jeff! When the Rota-Flex first came out it renovated what a pin box could do and be, but at this point in time that technology is a little more dated and the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box #325-GH-8040 is the "new…

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Answer 7

I spoke with my contact at Trailair and from your serial number we were able to determine that your trailer came with a 1621 HD pin box which is a long pin box style. I was unable to obtain the exact part number for your Trailair pin box but from the…

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Answer 8

There should be a sticker or plate on the pin box itself that lists the manufacturer and model of the pin box. If it is not present then there are some measurements you can take to determine the model of the pin box. I have included a link that…

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Answer 9

The absolute best cushioned equalizer that fits the dimensions you mentioned having would be the MORryde ALLTREK 4000 part #MR89DR as this is only option to provide vertical and horizontal cushioning. This would make a big difference and you'd be…

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Answer 10

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

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Answer 11

Yes, the MORryde Suspension Upgrade Kit for Tandem Axle Trailers - 3-1/8" Long Shackle Straps #MR76ZR will fit with the Equa-Flex system on your Grand Design.

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Answer 12

Hey Doug, thanks for reaching out! The MORryde ALLTREK 4000 #MR89DR dimensions can be a bit difficult to explain via text so I've attached an image giving you the dimensions you're asking about!

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Flex Air Pin Box Recommendation to Replace Lippert 1621

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