Arrives before Christmas 
Tired of your trailer tossing you around? Curt's Helux pin box smooths things out with a tough coil spring that beats air bags and torsion setups. It's maintenance-free, easy to use, and won't put your RV's frame warranty at risk.
The Helux coil spring system absorbs road shock, jerking, and the back-and-forth chucking that wears you out on long drives. It keeps things steady through starts, stops, and uneven roads so your ride feels calmer, your cargo stays safer, and your trailer takes less of a beating.
Built from fully welded steel with a triple-layer powder coat, this pin box is made to handle years of towing and all kinds of weather. And with no airbags, bearings, or bushings to service, you won't have to think about upkeep.
Unlike some aftermarket pin boxes, this one is approved for use on Lippert RV frames. That means you get a smoother ride without risking your trailer's warranty.
Notes:
Your trailer's pin weight is the amount of weight pressing down on your truck through the king pin. It's the key factor in choosing the right Curt Helux pin box since each model is tuned to a specific pin-weight range. If it's too light, the coil springs won't engage correctly, but if it's too heavy, you'll overstress the system. When this number is accurate, the pin box performs the way it was designed and gives you the smoothest ride possible.
The most reliable method is to use a set of certified vehicle scales (like CAT scales).
This process accounts for how your trailer is actually loaded, which includes cargo and water tanks, so you know you're picking a pin box that matches the conditions you're using it with.
If you don't have access to a scale, you can get a ballpark figure with your trailer's GVWR:
This method gives you a starting point, but remember it's only an estimate. The actual pin weight can change depending on how you fill tanks and distribute weight in the trailer.
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com. Let's take a real quick look together at this CURT Helux shock absorbing fifth wheel pin box. Now, this coil spring shock absorption system in this Helux pin box is designed to help reduce chucking and jarring when you're towing your fifth wheel trailer. So, if your current setup causes a rough ride, especially over bumps or dips, this upgrade can make a noticeable difference in your ride quality. So this is going to fit Lippert Rhino pin box bolt patterns, and this is approved for use on Lippert RV frames, which means you're going to get a smoother ride without risking your trailer's warranty, like with some aftermarket pin box options. So installation is going to be pretty straightforward for you.
You're gonna use the included hardware that I have loosely run through the holes here. So even though this is gonna be a pretty simple install, this is heavy. This weighs anywhere from about 160 to 170 pounds. I needed help to get it up here on my table. I made sure my coworker took the heavy end here.
But all that to say, make sure that you have plenty of support when you are lifting this into place because of its weight. But again, the actual installation itself should be pretty quick, should be pretty simple. So, with a gross towing weight of 18,000 pounds and a maximum pin weight of 2,950 pounds and a minimum weight of 1,360 pounds, this is going to do a great job at smoothing out that ride for you. So if you notice with the maximum pin weight and the minimum pin weight, you wanna make sure that your pin weight falls in that range. So the shock absorption system on this pin box will function as it's designed.
If you go below that minimum pin weight or above that maximum pin weight, then this will not work as it's supposed to. So, just so you're aware of that. So this is built from fully welded steel. It has a triple layer powder-coat finish on this. So it's going to be obviously built for longevity.
And this Helux pin box really does boast a virtually maintenance-free design. You're not gonna have to worry about airbags to refill or even a break-in period to wait for, so this is gonna be ready to go out of the box, and it's gonna be basically install it and forget it. So it's really great that you really don't have to worry about maintenance with this. This features an automotive-grade coil spring that's going to give you consistent, reliable performance. So if you tow a fifth wheel trailer regularly and you want a smoother, quieter, more comfortable ride, reducing those forward and backward jolts and at the same time, helping you reduce long-term stress on your RV or your vehicle, this pin box is really gonna be a great option for you to consider. If you do decide to pick one of these up, that's great. We would love to hear back from you regarding your experience with getting this installed and actually using it, so you can share your experience with us by dropping a review or leaving a comment on this product page. If you leave a review, you can actually share photos in that review as well. And so we would love to see what this looks like on your towing setup and definitely hear back from you. Well, I think that's gonna wrap up our look today. I do hope that our time together was helpful for you. Again, my name is Andy. Thank you for joining me.
Easy to install. Works great. There is a noticeable reduction in chunking.
I received this curt helux pin box very quickly. I was impressed with how fast and how the shipment was handled. I've installed the pin box but haven't yet towed our 5th wheel yet. 1st camping trip later this month possibly. Maine weather needs to be a bit nicer. Anyway. So far very impressed with the product.
This pin box is absolutely amazing. Way smoother pull way less chucking ! Highly recommended this over any stock pin box.
I’ve only had my toy hauler out one since installing the hitch but went over a set of RR tracks and 3 bridges and it definitely makes a difference. Greatly soften the blows to the truck so you know it’s taking a lot of stress off the fifth wheel. Watched it workings through the rear view mirror. Simple design that someone should have come up with long ago. Took a friend of mine and I exactly 1 hour to install withe the help of his motorcycle jack on the tailgate of the truck. It’s heavy and well built. They are a little pricey but I feel well worth it for the longevity of the frame. Most importantly know the weight of your trailer loaded to pick the right one
Glad the pin box was good. The box and pallet were damaged badly. Will be installing it tomorrow. I think it will enhance our ride while towing.
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