Trailair Pin Box Recommendation for 2018 Keystone Montana 3721

Question

Question:

I have 2018 montana model 3721- 40 foot long. Which model will bolt on and which one do you recomend.

asked by: Coleman L

1

Helpful Expert Reply:

Your 40 foot long 2018 Keystone Montana 3721 would have the Lippert 1116 pin box so for a Trailair to fit it you'd want the # LC155943 which is a Trailair confirmed as a fit and has a 21,000 lb capacity.

expert reply by: Jameson C

1

Answer 1

The Trailair Air Ride 5th Wheel Pin Box part #LC155943 is my recommendation for a cushioned pin box for a Keystone Montana with Lippert 1116 Pin Box. The Trailair has both an integrated air bag and shock absorber so it will do the most for…

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Answer 2

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 3

You can change out your Lippert Turning Point pin box for the Trailair Air Ride 5th Wheel Pin Box - Lippert 1621 & 1621HD - 21,000 lbs #LC158778 as long as the mounting points are the same and you are within the capacity of your pin box. I've…

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Answer 4

Check for a sticker or plate on the pin box on your 2010 Jayco Recon 39C. If it indicates that the pin box is a Lippert 1116 then Trailair pin box #LC155943 will fit the trailer. If it indicates a different model pin box let me know. If you cannot…

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Answer 5

I contacted Lippert on your behalf. Your current LCI 1116 measures 17-7/16" from the bottom of pin to the top of pin box mounting. The Trailair Air Ride 5th Wheel Pin Box #LC155943 measures13-1/2 plus the pin at 3-3/8" or 16-7/8"…

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Answer 6

The mounting bolt dimensions are the same between a Lippert 1116 and a 1716 pin box so the #DM8250018 will bolt up either way. The difference is the length of the pin box. The 1116 is considered a medium length pin box and is about 7 inches shorter…

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Answer 7

For the Lippert 1716 pin box you might have the only cushioned Lippert pin box we offer is the Trailair part #LC158777. We don't have a FlexAir at this time but this cushioned pin box will give you a much smoother ride quality that what you have…

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Answer 8

The cushioning components of Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 - 21,000 lbs Item #LC155943 won't move enough for you to have to change any height settings. But if you wanted to you could mount the new pin box one spot lower on…

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Answer 9

A Sidewinder pin box would be ideal but there isn't an air ride Sidewinder that is rated high enough for the gross trailer weight of your trailer. You do not want the pin box to have a lower capacity than what the trailer is rated for. What you…

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Answer 10

There is not one specific recommended pressure for the air bag in the Trailair Air Ride 5th Wheel Pin Box #LC155943. The bag's pressure can range from 20 to 120 psi depending on your situation. After some miles you'll likely find the sweet…

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Answer 11

There is definitely a way to tow a 5th wheel trailer with your 2021 Ram that is equipped with the RamBox, but it's going to require some new components both on the trailer and your truck. The issue with the Ram Boxes is that they make the bed…

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Answer 12

To gain a couple inches of horizontal clearance you might be able to install the arms of your B and W Companion part #BWRVK3305 in the opposite orientation they might be in now. See attached picture to see what I mean. You have what looks like an…

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Trailair Pin Box Recommendation for 2018 Keystone Montana 3721

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