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  1. 5th Wheel Pin Box
  2. CURT
  3. Lippert 1116
  4. Upgraded Pin Box
  5. Absorbs Road Shock and Reduces Chucking
  6. 19000 lbs GTW
Curt Rota-Flex 5th Wheel Pin Box - Lippert 1116 - 19,000 lbs
CURT

Curt Rota-Flex 5th Wheel Pin Box - Lippert 1116 - 19,000 lbs

Part Number: LC176440
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$707.31
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5th Wheel Pin Box
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This Rota-Flex pin box has a pivoting head with a built-in rubber compound that works to reduce chucking and absorb road shock, resulting in a smoother ride and less wear and tear on your trailer. Replaces Lippert 1116 pin boxes. 1-800-940-8924 to order CURT 5th wheel pin box part number LC176440 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Rota-Flex 5th Wheel Pin Box - Lippert 1116 - 19,000 lbs. 5th Wheel Pin Box reviews from real customers.
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CURT 5th Wheel Pin Box - LC176440

  • Lippert 1116
  • Upgraded Pin Box
  • Absorbs Road Shock and Reduces Chucking
  • CURT
  • 19000 lbs GTW
  • Fixed Turret

This Rota-Flex pin box has a pivoting head with a built-in rubber compound that works to reduce chucking and absorb road shock, resulting in a smoother ride and less wear and tear on your trailer. Replaces Lippert 1116 pin boxes.


Features:

  • Pivoting pin box replaces standard pin box on your 5th-wheel trailer to improve handling and limit strain on the truck and trailer
    • Minimizes chucking by allowing controlled movement of king pin within your hitch
  • Rubber compound built into the head absorbs road shock
    • Reduces wear and tear on trailer
  • Black powder coat provides rust resistance
  • Sturdy steel construction
  • King pin connects to any 5th-wheel trailer hitch
  • Bolt-on installation with no assembly required
  • Made in the USA


Specs:

  • Designed to replace Lippert 1116 5th-wheel pin box
  • Weight capacity: 19,000 lbs
  • 1-Year limited warranty


Notes:

  • Do not use the Curt Rota-Flex pin box with any type of gooseneck adapter.
  • The Curt Rota-Flex is not compatible with Curt Q-Series 5th wheel hitches.

The Rota-Flex pin box has a pivoting head and built-in rubber compound that help to reduce checking and absorb road shock for a smoother ride as you tow your fifth-wheel trailer.


Pivoting Head Reduces Chucking

The Curt Rota-Flex pin box has a pivoting head to help reduce chucking

The pivoting head on the Rota-Flex allows for controlled back and forth movement of the king pin to reduce the uncomfortable jarring known as chucking. Unlike a rigid pin box that has little give at the point where the trailer and the hitch are connected, the Rota-Flex can pivot slightly to compensate for those times that your trailer suddenly pushes or pulls on your tow vehicle. Because the pin box head - not the king pin itself - is moving, the chucking that often occurs when the king pin jerks around inside the hitch is significantly reduced.


Rubber Compound Absorbs Road Shock

The Curt Rota-Flex pin box has a built-in rubber compound to help absorb road shock

A heavy-duty rubber compound is built into the head assembly of the Rota-Flex pin box. This rubber absorbs the bumps and vibrations, or road shock, experienced when towing a fifth-wheel trailer over rough roads. Standard pin boxes without any type of shock absorption transfer road shock to your trailer, resulting in potential damage to the trailer and an overall bumpy ride. The shock-absorbing rubber inside the Rota-Flex takes the beating so there's less wear and tear on your trailer or RV and you get a smoother ride.


Easy, Bolt-On Installation

The Rota-Flex is easy to install. Simply remove your existing Lippert 1116 pin box and install the Rota-Flex on your trailer or RV. The Rota-Flex uses the same bolts that held on your original pin box so no additional hardware is required. Plus, it comes out of the box ready to be put on your trailer, so no assembly is needed. Because the Rota-Flex is quite heavy, you should put it on an elevated surface or have a friend help you support its weight during installation.



176440 Curt Rotaflex Fifth Wheel Kingpin Box for Lippert 1116

Replaces 176440 Lippert Components (LCI) Rotaflex by Trail Air Fifth Wheel Kingpin Box for Lippert 1116





Customer Satisfaction Score:


Customer Reviews

Curt Rota-Flex 5th Wheel Pin Box - Lippert 1116 - 19,000 lbs - LC176440

Average Customer Rating:  4.7 out of 5 stars   (80 Customer Reviews)

This Rota-Flex pin box has a pivoting head with a built-in rubber compound that works to reduce chucking and absorb road shock, resulting in a smoother ride and less wear and tear on your trailer. Replaces Lippert 1116 pin boxes.

by:

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.



by:

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.



by:

Got it on and ready to try. It fit nicely. Did it myself in about an hour . Nothing left of the box it was in but other than a couple of scratches the pin box itself was in good condition



by:

Perfect replacement for my unit. The movement in the mount helps with the shock on the hitch itself. The unit is very strong and after a year I have had no problems. The instructions were spot on and shipping was very fast. I recommend this pin box as it is more economical than others I have seen but really helps on the bump and pull with a solid hitch

Lance profile picture

Lance

12/20/2022

This unit is working as perfect as it did when new. Simple with no bags to inflate or check on. Great product and I would recommend this to anyone.



by:

I installed this by myself (it is heavy!) by putting it in the bed of my pickup & strapping it to a floor jack but not a job I’d recommend doing it by yourself.
I already have airbags on the rear axle of my pickup is why I chose this king pin . Only a 200 mile trip and the bucking on the 5th wheel was gone. But the real test will be on a rough highway...



by:

Definitely dampened the chucking and my wife is much happier with the ride. Also it seems to be much quieter. Noticed at the camper show many units come with the Roto flex from the factory.



by:

Have not installed yet, paint has been scraped off in several locations especially on top and on the rounded corners from shipping. Will have to do some touch up painting. Excited to get installed and pull trailer next weekend



by:

The pin box made the 5th wheel handle better, with less chucking and very stable.



by:

The hitch arrived poorly packaged in a cardboard box. The hitch is very heavy. It was scratched and required repainting.

The hitch itself looks well made and strong.



by:

Product was as ordered. Hat's off to etrailer. After UPS lost the first one, etrailer expedited its replacement



by:

Works great eliminated the jaring. Also shorter so I can make a hard turn without touching the sides of my box



by:

Great product, Installed and what difference the ride. Thanks SJ McDonnell

Sean  profile picture

Sean

6/21/2021

Great hauls good thanks



by:

It did what it was advertised to do.



by:

Looks and works great. Easy install



by:

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!



by:

I've had this pin box on other fifth wheel trailers with great experience.



by:

Received on Wed. as planned. With a little help from my forklift, I had this trail air pin box installed in few hours. Fit perfect on my Sabre. Drove around the block, about 4 miles. This pulls so nice, it is like nothing behind you. Thanks etrailer.



by:

The cardboard box the hitch was delivered in was damaged, hitch was not damaged. Curt could potentially package the hitch differently to protect the product and mitigate delivery damage.



by:

This pin box has done a great job



by:

The product was great, The better part was how fast it got to me . I had it put on the camper the same day i had received it what was 3 days after my order. Now you can't beat the shipping. All my orders from ETrailer has been fast and on time . Thank you all at Etrailer.



by:

Easy fit and an improved ride.



by:

The shipping container was not adequate for pin box. It was too large and no protective packing was used to protect the powder coated finish. When it was delivered by UPS the carton was destroyed. I had to repaint it as it was badly chipped from rough handling. I am disappointed in the performance as I do not see any difference in the chucking which is the reason why I purchased it. If I were to get a different 5th wheel I will not purchase a Rota-Flex again.



by:

Looks great on my 5th. If anyone else has wondered as I did and could not find anything online regarding the vertical height difference between this trail air rota flex and my standard lippert 1621. This pin box will reduce the nose of my 5th by 2" mounted in the same location. Now to pull my rear axle spacers on my dodge to get another 1.5" lower. Etrailer is great as always. Never had a problem with them and have ordered here many times. Thanks Etrailer!



by:

This king pin assembly works well to get the chucking down. I do feel at times do to road conditions that I still feel some, but over all it has helped the ride and I feel it has take some abuse away from my truck and the trailer seems to ride better. Overall I am pleased with the kingpin assembly for the cost. The only thing I cannot do is put my cover on that was on my old kingpin.



by:

Had trouble receiving the hitch through UPS (they lost it --[48 miles from my residence] conversation with Stacy at etrailer and they shipped another, which my wife and I installed. etrailer was very helpful in sending another to replace the one UPS lost. Thanks so much


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See what our Experts say about this CURT 5th Wheel Pin Box

  • Does the Reese M5 5th Wheel Hitch Work W/ a Curt Rota Flex
    Hi Ted, yes the Reese M5 # RP37FR will work with your 2022 Ram 3500 with the factory prep package as well as the Curt Rota Flex pin box # LC176440. I also would say the 32K to be overkill, because you could get away with using the 27k # RP37FR. With this hitch you'd still have 3,000 lbs of capacity to play around with in case your RV is a bit heavier fully loaded.
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  • Correct Gen-Y Pin Box To Replace 19K Rota-Flex Pin Box On a 2018 Keystone Montana 5TH Wheel Camper
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  • Determining The Pin Box Bolt Pattern Of A 2019 Keystone Montana 3791 RD With The Pin Box Tag
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  • What Replacement Pin Box do You Recommend to Use with a Curt Q16 and a Lippert 1116?
    I went ahead and reached out to my tech at Lippert (who designed the Rota-Flex # LC176440 for Curt), and they confirmed that the reason why Curt E series and Curt Q series hitches like the Curt Q16 is not compatible with the Rota-Flex is because the articulating movement of the hitch interferes with the pivoting movement of the pin box. These two mechanisms work against each other. With that being said, if you have the Lippert 1116 pinbox, a great alternative that does not have a pivoting...
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  • Which Trailair Rota-Flex Pin Box Compatible with Lippert 1621 Pin Box
    I have a solution for you, but the Trailair Rota-Flex # LC176440 pin box is designed to replace 5th wheel trailers with a Lippert 1116 pin box and not the 1621 pin box. Instead, you'll want to use either the # LC328330 (trailer with GVWR of less than 18000-lbs) or the # LC328329 (trailer of GVWR less than 21000-lbs). The Trailair Rotaflex is a great solution to help reduce the bouncing and jarring that car be experienced with an uncushioned pin box and will be a great upgrade for your towing...
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  • Upgrading to Cushioned 5TH Wheel Pin Box on 1716 OEM Pin Box
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  • What Is The Torque Specs For The Curt Rota-Flex Pin Box?
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  • Which Trailair Air Ride Pin Box Replaces Roto-Flex 1116 Pin Box on 2018 Keystone Raptor 355TS
    Thanks to the item number from your current pin box my contact at Lippert was able to confirm that your 2018 Keystone Raptor 355TS has a Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1116 # LC176440 which has a 19000lb weight capacity and uses the 1116 bolt pattern. You will need the Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 # LC155943 is designed to replace your 1116 bolt pattern pin box and offers a 21000lb weight capacity. This pin box will offer a much smoother ride due to...
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  • Demco Capture Plate Compatibility with Trailair Rota-Flex Pin Box
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Info for this part was:

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