Most Popular Upgraded Pin Box for 2021 GMC Sierra 1500

I haven't had a chance to put it on my trailer yet it looks much stronger built a lot better than the factory pin box exited to use it on my short bed

Great product, wish I had before I broke my back window and smashed my roof. Fast easy transaction and delivered on time in good order

the fit was perfert. as you can see from the pictures is attached, i drilled a hole in the top to drain water that collects. i fabercated a cover to fit over the opening.

Best upgrade to the 5th wheel you can do. Our first cross country trip and I-40 beat the snot out of us on all the bridge transitions with the stock pin box. Immediately ordered this unit and now it’s like the trailer is floating behind us. I run 65 psi in the airbag. Solid unit and easy installation.

Parts where on back order per information given by my 2 other vendors etrailer had it in stock and arrived on time before original ETA As a owner of a small business etrailer is great to work with and always helpful.

Sidewinder worked great for my short bed Ram. Be sure to get the matching wedge for your hitch. Thanks etrailer. I will be using you for all my trailer components

This item arrived much faster than etrailer said it would. It came by truck, and the freight company driver was very nice and made sure I opened the box before he left. I installed it myself with some help from my 15 year old son. We used our forklift tractor attachment to put it in place. The Curt Flex Air totally changed the experience of pulling our 5er. It eliminates most of the chucking, and acts like shocks on a car, so ride returns to normal immediately after a bump in the road...which the Flex Air absorbs most of.

Changed out my old pin box for a Curt Flex Air pin box. This one seems to be very heavily built and should last for years to come. Haven’t had a chance to pull it yesterday but am sure it will pull and perform great. Thank you etrailer for another great shopping experience.

My wife and I are very pleased with our purchase of this product. We have taken numerous trips with our rig since installing it and what a difference it has made from the standard basic pin box. We no longer feel any chucking from starting off and stopping when towing our trailer. I figured it would definitely reduce it but it eliminated it completely. We tow with a one ton F350 long bed SRW and a B&W hitch. In my opinion It is not a DIY installation because of the sheer weight of the product otherwise I think that it would be. It is not a complicated item to install its just super heavy. In addition to my praise of this product, I would like to recommend the addition of grade eight hardware to be included with the product for installation. I think a few dollars more for the price should more than cover that cost. When it comes down to it the grade five hardware is sub standard for such a massive object in my opinion. It is supporting not only the weight of the pin box but the torque under load as well so for the purpose of safety, which is why we purchased it in the first place the hardware has to come off anyway to take off the old pin box. So why not replace it at the same time. My two cents worth anyway. I would definitely recommend this product to others who are looking to eliminate the chucking felt under a standard fifth wheel pin box.

Well, The hitch was to be delivered on the 23rd. Tforce the company you chose to deliver is located in the Philippines and after speaking to 5 different NON English employees I gave up. So I called the Tforce in Fontana Ca where the hitch is now. NO One answers the phone then after 30+ attempts a female answered and before I could complete my request she transferred my call to an empty line.

Hannah did an excellent job of working with me to find the correct upgrades for my towing system. 5 stars got her. Tge package arrived with the king pin poking through the box and having deep scratches. I think it will function ok. 3 stars for those handling shipments and deliveries.

No bucking and jerking has made for enjoyable RV experience this year. One of the best investments I've made in our RV. prompt handling and shipping from etrailer made it even better!

I've had my Elite Airborne Sidewinder for about 6 months now. it's mounted on a 33 ft Jayco and pulled by a 2016 F-150 Lariat with a 5.5 ft box and the Max tow package. Total trailer weight is about 7800 lbs empty and closer to 9-9500 when we are loaded. We have done several short trips (under 200 miles) and one longer one so far from Montreal to Charleston, SC. I'm nothing short of blown away by this coupler. There is no chucking, and it pulls so smooth you'd hardly think there was a trailer back there. Even my wife has commented that it hardly feels like we're towing. The sidewinder allows 90 degree turns easily and I can back it down a 80 ft driveway easily. I check the air once in a while in the air ride and have yet to check the key but I can back on to it easily. This coupler does exactly what it was advertised to do, and does it extremely well. We've had it out 6 times this year already and have a few more in mind before calling it a season. My thanks to Reese for an amazing coupler and to Pat and etrailer for their help in getting it to me so fast! Great customer service!

I love the Air Ride King Pin with Sidewinder. The air cushion has removed the lag when taking off and stopping as well as smoothing out the trailer movement on rough road. The solid construction has served me well on our recent 2000-mile road trip. I tow a 12,000 lb fifth wheel with a short bed 3/4 ton truck.

Freight co delivery estimated for Friday, arrived today. (Tuesday). Borrowed a tractor, dropped the old and lifted this monster into place. 12- 15/16 bolts (originally) 18 hole mount. Not sure if the height is correct for the bed, but will adjust it down if after the rubber bumper is inflated, if it doesn’t sit level. The bolt pattern was correct. better get help! From dropping the MFG lippert, to getting the thing lifted an bolts snugged up, about 45min. Will take a bit longer to attach the deadman switch and electrical box. Well crafted, definitely heavy. This should save my truck n RV from porpoising damage as I’m going over Bridges and bad roads.

We're so anxious to try out our new Curt TrailAir. Installation went smoothly, it looks great. We can hardly wait to experience the ride!

Delivered intact.

Replaced Rhino with this unit on my Cedar Creek 311RL. It was straight forward and simple, but not easy for this old man to do it solo. Used the tailgate as my shop. Stuck the back up in the air and drove back to insert into the bracket. I then used the levelor on the trailer to line up 2 of the holes to insert the first bolts. I used a car jack near the pin to raise the 230 pound box into line up position to insert the other 8 bolts. Torqued it down and aired it up, then test drove it. Rides like a dream. Much softer on those in the tow vehicle and I assume on the fifth wheel itself. Service from etrailer was good. The advice and recommendations for my specific rig was a little off. But I was able to do research myself. Shipping was timely. Over all another successful etrailer transaction. Thanks to everyone.

We used to have a lot of slop with our hitch and that has lessened immensely since our purchase of the MORryde pin box.

Product was received as expected. Installation went very well. I am eager to try it out this week on the road!

I just completed a 2800 mile trip after installing the Trail Air Air Ride pin box on my Solitude 5th wheel. I was able to install it myself from the bed of my pickup using a hydraulic bottle jack to lift it into position. I previously made the same trip with the factory installed MORryde Cushioned Pin Box and the Trail Air provides a greatly improved ride. With the MORryde, I encountered several sections of concrete highway that set up a front-to-back oscillation which persisted across many miles. I didn't have that issue with the Trail Air. I didn't order the Flex Air model that also included the flexible block because I was concerned the added height of that pin box would have been a problem. However, after installing the non-flex Trail Air I've found that the other one would have also worked out if I lowered my truck hitch an inch or two. Also worth noting, this pin box is four inches shorter than the 1621 MORryde it replaced. However with a long bed truck I have no clearance issues and can still lower the tailgate when hitched up.

I'm pleased with the pin box. Put it on my 5th. wheel. The airbag gives us a better ride than any other pin box. Its a great product.

It's a great pinbox. Really helped with chucking and compatible with my Demco sliding hitch. Also no issues with delivery, was helped by Pam and Jessie. They are awesome people to work with.

I have had many coach's with this hitch, that is why I am changing out the one currently in the coach to this. UPS delivery sucks. Box was misrouted to another terminal after arriving at the facility near me. Caused an extra day's delay in delivery. When box did finally arrive it was virtually destroyed and driver claimed box showed up open and that they had to retape it this morning ING before delivering it.

The Trailair pin box is a great product. I installed it before a 700 mile trip and it does what it is intended to do. Etrailer was very helpful in selecting the correct pin box for my trailer. Thank you.

I just got the pin box, so I don't have it installed yet. It seems very well built. I wish it had a removable eye in the top so I could lift it with the crane that I have in the bed of my truck. No complaints though. Can't wait to try it out.

I have not installed this part on my 2021 momentum 395MSR yet, but it was received in perfect condition. I had the same pin box on my Solitude390RKR and loved the way it handled. If the part does not perform as expected once installed and after I have some miles behind it i'll update my review.

Installed this MORryde cushioned pin box on a 20K# toyhauler(from a solid pin). Comparing 9K miles before and 11K miles after, it made a remarkable improvement in the ride, especially on choppy, rough roads (think I-40 across New Mexico). Easy bolt-on installation. I consulted with the staff @ etrailer.com to ensure the correct hitch model was selected. Shipping was straight forward via truck freight. Excellent communication through the process.

We have gone over 2000 miles and the MoRyde Cushioned 5th Wheel Pin Box fot the Lippert Rhino and it works great!! What a difference it made in pulling my 5th wheel trailer!! It was the best investment I made for my 5th Wheel !! Easy to install if you’re handy! I would highly recommend this product!!

Ordered the Morryde pin box to replace the Rhino pin box on a 2022 Riverstone Reserve. Shipping from Etrailer was right away but had a little delay with the shipment because the semi truck could not get up my road. Taking off the Rhino pin had a little trouble as one of the bolts was cross threaded, which I have read from others also having the same issue. The Morryde came with all the hardware and with two people had it changed out in about an hour. Took it for a small drive and really seems to make a big difference, will get it out for a longer drive soon on my next trip. The new pin box went in the same position as the old one and did not change my level or bed clearance.

Great fit

product is right on par with MORryde reputation, the shipping carrier on the other hand...stinks ups freight lots of problems with them.