etrailer | Lippert Trailair Rota-Flex 5th Wheel Pin Box Review

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This is also going to help to reduce the road shock, as we head down the road we hit bumps and stuff like that. It absorbs it right in this area, so that doesn't get transferred into the truck where we feel it. But it also isn't going to get transferred up through our pin box, into our side plates, and then weaken the front end of the camper.So anything we've got loaded in the camper is going to have a little bit of a smoother ride. We don't have to worry about all that standard stress and strain that we get from a standard pin box. And we have this available in three different configurations.

This happens to be the 1621 pin box. This is the 18,000 pound version, there's also a 21,000 pound version. So just match that most closely to your camper, it's going to give you the weight rating that you need. And also, it'll give you that rubber in there to support those weights. And then this is also available in a 19,000 pound weight rating and the 1116 version pin box.

Now, since this is going to be a direct replacement, the good thing there is, you have no modifications to make to your brackets that come down, there's going to be no drilling or anything like that.You do want to hang on to the hardware when you remove your old pin box, just so you have it to put it back in, the Rota-Flex does not come with it. If you don't have it, or if you want to upgrade whatever you want to do there, you want to be sure you're using 5/8 diameter hardware. We put a flat washer on the outside, lock washer on the inside with a nut, which you'll see when we install it. Now I've used the Rota-Flex before and I really enjoyed it, but we're going to take it out, we're going to test it. We're going to take it through our test course, we've got alternating and solid speed bumps that's going to do plenty of that forward and back.

We'll do some accelerating and some stops just so you can see how well this goes is going to work at absorbing that.So as you can see, it does a good job. There's a lot of absorption that takes place up here. And the thing I like about this one is that we don't have an airbag to maintain. There are other options out there for a cushioned style kingpin, and having that airbag in there is okay, generally they hold pressure fine, but if you start getting leaks you're going to be maintaining it more often than what I like. As another option Gen-Y does have a fifth wheel, it uses a torsion flex system. So it's almost like a torsion flex axle, which is tried and true on a lot of different trailers. It's just a square tube inside another square two with rubber in there to absorb it. I think that system works out really well too. I think it's a good idea, but I think it's kind of a 50/50 between the two.I think the Gen-Y is going to be a little bit better at the absorption, because it has more travel up and down, where I think this one's slightly better at the chucking or that forward and back jerking feeling that we get. The overall construction on it is really nice. It is slightly heavier than what the standard 1621 was that we took off. I think the plate steel is just a little bit thicker all the way around, it seems like the main body of it it's just a hair thicker than the steel that we had on the old one. I really liked the paint finish, I've never seen any of these come through with any chips or anything