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The Demco Hijacker Autoslide 21K #DM8550038 weighs approximately 305-lbs. The head of this hitch weighs around 70-lbs and can be removed to help make moving and installing this 5th wheel hitch a little bit easier.

The head alone for the B&W Companion hitch #BWRVK3500 weighs about 70 pounds. Everything else weighs about 130 pounds. So the total weight of the hitch is approximately 200 pounds.

The Demco Hijacker Autoslide #DM8550034 has a weight of 273 lbs. I've added a couple links to video reviews of this hitch for you to take a look at.

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…

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…

You can absolutely use the Lippert Trailair Flex Air 5th Wheel Pin Box #LC328492 with your truck that has air bags installed. The air bags for the two systems are completely separate and provide different benefits, so they will not work against each…

Thank you for all of the information! You are definitely correct in that if the welds on your Reese Revolution are cracking then replacing the pin box is the best course of action. Since you have enough clearance without the Sidewinder function you…

If your trailer gross weight is under 18,000 lbs you might consider the TrailAir Flex Air, part # LC328492. The TrailAir pin box you were reviewing, part #LC158778, is a 21,000 lb-rated replacement for a Lippert 1621 pin box. The comparable item from…

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…

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…

Since your 2022 Grand Design Momentum 381M has a Lippert 1621 pin box the correct Flex Air pin box you'd need is the part #LC369535 that you referenced.

The Trailair Flex Air 5th Wheel Pin Box #LC369535 you mention will replace Lippert 1621 pin boxes, so if you have a 1621 pin box this will work for you. If you are unsure which pin box you currently have, you should be able to locate the…