Which Replacement Trailair Pin Box for 2008 Keystone Challenge 35 5th Wheel

Question

Question:

I have a 2008 Keystone Challenge 35. Which air pin box would you suggest? Thanks

asked by: Pat D

1

Helpful Expert Reply:

In order to recommend the correct Trailair replacement pin box for your Keystone Challenge 5th wheel, I will need to know the manufacturer and model number of your OE pin box. This information should be listed on a plate or sticker affixed to the pin box. If you would care to reply with this information, I would be happy to make a recommendation.

If you cannot find a model number or manufacturer, you can take some measurements of your OE pin box as shown in the FAQ article I have linked you to. With these measurements, we can most likely determine which pin box you have.

expert reply by: Mike L

1

Pat D.

4/17/2013

Hi MikeMy trailer has a Lippert 1621 box pin.Thanks Pat

Patrick B.

4/24/2013

With the Lippert 1621 you can use the 5th Airborne with a 21K capacity, part 5AB-E1621-610. The other options are the Trailair Tri-Glide,UF35-946229, the Trailair Air Ride, UF35-946203, and the Rota-Flex, UF35-946202. These options do not have the Sidewinder turret for moving the turn point further back for short beds. Of the 4 options, I do not like the Rota-Flex. I prefer the adjustability of the air systems on the others. Although some prefer this since they do not have to worry about air pressure. If 18K is not enough weight capacity, then you can throw it out the RotaFlex and the Tri-glide. The big difference between the Trailair Air Ride and the Airborne is the location of the suspension parts. Everything is easier to access on the Trailair, but that means that your air fitting, shock and air bag are exposed. Price on those two is pretty comparable, the question is do you prefer easier access or more protection for the suspension.

Answer 1

I checked with Andersen and they do state that their Ultimate 5th Wheel Connection can be used with the Trailair Rota-Flex 5th Wheel Pin Box like the part #LC328330 that you mentioned. As you referenced, you will just want to use the Rota-Flex…

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Answer 2

Hello again Joel; I would recommend the Curt Air Ride 5th Wheel Pin Box #LC158778 over the Flex Air #LC369535. The pivoting head from the Flex Air causes too much movement so it actually isn't compatible with the Andersen hitch. Since the Air…

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Answer 3

The Andersen Ultimate Connection 5th Wheel Trailer Hitch System #AM3200 should only be used with fixed pin boxes. Since the Curt Air Ride #LC158778 moves from the air ride it should not be used.

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Answer 4

Yes, the Andersen Ultimate hitch you have is compatible with the Curt Trailair pin box part #LC158778 that you referenced.

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Answer 5

Hello Joe, thanks for reaching out. Yes, we do have a hitch for the 1993 Chevy C1500 short bed. For that I recommend the following: - Curt Trailer Hitch Receiver - Custom Fit - Class IV - 2" #C14081 This will fit short bed pickup models with a…

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Answer 6

Hey Michael. The Curt Helux item #C94HB is about 6" shorter and 20 lbs lighter than the Reese Goose Box item #RP85FR that also fits a Rhino Box pin box. The Curt Helux item #C94HB weighs 200 lbs, including the safety chains. It measures…

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Answer 7

A shorter pin box will reduce your turning clearance by bringing your trailer in closer so you don't want to do that. The longest pin box we have that fits a 1621HD bolt pattern is the Curt Air Ride 5th Wheel Pin Box item #LC158778. The center of…

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Answer 8

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 9

Hey JT, thanks for reaching out and providing all of the information! You have a Lippert 1621 pin box (according to my contact at Lippert) so the correct MORryde Cushioned Pin Box is the part #MR74VR. What 5th wheel hitch do you use to tow your…

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Answer 10

Hi Jesse; the only reason I can really think of is your bolt pattern. If you have a 1621 bolt pattern there is no reason why you wouldn't be able to use the lower rated Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs #LC328492 you…

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Answer 11

The difference between the 1621 and the 1621SHD is weight capacity and how many bolts is required to mount it. The 1621 uses 4 bolts for mounting. The 1621SHD requires all 6 bolts to be used.

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Answer 12

The Trailair Flex Air #LC328492 is the correct replacement for your Lippert 1621 and we've confirmed will work with the Andersen Ultimate. The Flex Air is going to be the best option to smooth out your ride.

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Which Replacement Trailair Pin Box for 2008 Keystone Challenge 35 5th Wheel

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