1. Fifth Wheel King Pin
  2. Lippert Components
  3. 1621
  4. Lippert
  5. Reduces Bounce and Jarring
  6. 18000 lbs GTW
Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs

Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs

Item # LC328330
lowest price pledge
Retail:$719.83
Our Price: $609.17
You Save: $110.66
Fifth Wheel King Pin
This item qualifies for Free Shipping
Shipping Weight: 133 lbs
Quantity: 
In Stock
Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs Fixed Turret LC328330
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

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 1621 pin boxes. Call 800-298-8924 to order Lippert Components fifth wheel king pin part number LC328330 or order online at etrailer.com. Free expert support on all Lippert Components products. Guaranteed Lowest Price and Fastest Shipping for Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs. Fifth Wheel King Pin reviews from real customers.
  • All Info
  • Reviews (23)
  • Q & A (76)
  • Videos (2)
  • Photos
  • Used (1)
  • Why etrailer?

Lippert Components Fifth Wheel King Pin - LC328330

  • 1621
  • Lippert
  • Reduces Bounce and Jarring
  • 18000 lbs GTW
  • Lippert Components
  • Pin Box Upgrade
  • Fixed Turret
  • Cushioned

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 1621 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 1621 5th-wheel pin box
  • Weight capacity: 18,000 lbs
  • 1-Year limited warranty


Diagram of measurements for the Lippert Rota-Flex pin box

Note: Do not use the Trailair Rota-Flex pin box with any type of gooseneck adapter.


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 Lippert 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 Lippert 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 1621 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.



328330 Lippert Components (LCI) Rotaflex by Trail Air Fifth Wheel Kingpin Box for Lippert 1621

Replaces UF35-946202 Ultra-Fab Rubber Ride Kingpin Box by Rota-Flex





Video of Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Lippert Components Fifth Wheel King Pin - Pin Box Upgrade - LC328330 Review

Today we're going to review part number LC328330. This is the Lippert Trailair Rota-Flex 5th Wheel Pin Box for the Lippert 1621 Pin Boxes and it has a 18,000 pound weight capacity. Now this is a pivoting pin box which will replace your standard pin box on your 5th wheel trailer. This will improve the handling and limits strain on the truck and the trailer. Basically because it pivots, as you can see right here, this plate down here will pivot up and down. This will minimize chucking by allowing controlled movement of the king pin within your hitch. There's also a rubber plate right in here, above this plate.

This rubber compound built into the head will absorb road shock and it helps reduce wear and tear on your trailer. The whole pin box has a black powder coat finish. It helps to provide rust resistance. It's made of a sturdy steel construction. The king pin, right down here, will connect to any 5th wheel trailer hitch. Now this is a bolt on installation with no assembly required.

It is made in the USA. Again, specs on this, it's designed to replace the Lippert 1621 5th Wheel Pin Box. The weight capacity on this pin box is 18,000. It comes with a 1 year limited warranty. Now I do want to give you some pin box measurements. It's what you wanted.

To make sure this will fit your pin box by using these measurements to match up with these. What we're going to is we're going to first do the distance between - There's 2 rows of bolts. Center to center, we're going to measure that distance, the horizontal distance between the bolt hole. As you can see, that's right at 7-3/4 inches. Now the distance, center to center, from the holes up and down vertical is 2 inches.

A bolt hole is 5/8 inch diameter. Now the other measurement, they measure from the center of the king pin to the front row of bolts and then the center of the king pin to the rear row of bolts. What I've done here to make it easier to show you, I've put a mark on here where the center of the king pin is. What we're going to do is measure from that center. Let's see if I get a good measurement on this. You could see 17-3/4 to the front row and to the rear row is 25-5/8 and then the last measurement, the width on this. Let's see if can turn this to get the width for you. That's also critical when you're taking measurements. We'll rotate this. There we go. The width on this is going to be 12 inches. Then one last note I want to mention, the Trailair Rota-Flex Pin Box cannot be used with any type of gooseneck adapter. That should do it for the review on part number LC328330. This the Lippert Trailair Rota-Flex 5th Wheel Pin Box for the Lippert 1621 Pin Boxes with an 18,000 pound weight capacity. .


Customer Reviews

Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs - LC328330

Average Customer Rating:  4.7 out of 5 stars   (23 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 1621 pin boxes.

- LC328330
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. 636450



- LC328330
by:

Fast Shipping,Great product,It sure softens up the ride! Doesn't eliminate all the jerking but overall quite satisfied! Quality built product. Definitely not a one person job so seek out a helper to hold things Thanks Etrailer. 86296


Comments
This king pin box came on my 5th wheel, it does not help the jerking at all. I am now looking to install a different pin box.
-- comment by: Gene - 10/19/2013

2207

Thanks for the feedback. If you need help finding a different pin box, please let me know. We carry Ultra-Fab, Fifth Gear and Reese pin boxes in various versions.

-- Patrick B - 10/23/2013


- LC328330
by:

Came in mail packaged! Even the UPS man told me how etrailer is a legit company doing a great job shipping! Any in costumer service was great and her team had the price match over amazon done in one business day. Great to work with!! 770686



- LC328330
by:

Good Product will recommend to others 660090



- LC328330
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 564168



- LC328330
by:

Nice product. Would have been nice if ups didn’t loose the first one but you guys got me another one quickly 557530



- LC328330
by:

I received my order promptly, faster than expected for a large item. I paid for my pin box, checked the next day and etrailer had dropped the price, they refunded the difference which impressed me greatly. I am a repeat customer and have not had a bad experience ever. 500967



- LC328330
by:

Shipment was on time as promised. The packing in the box was not well done and it had some scratches. Will be trying it out in a few weeks to see how it works. 496382



- LC328330
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. 432321



- LC328330
by:

The Roto Pin Box has eliminated 90% of my chucking. The only time I get any now is on a extreme bump but it settles down pretty quick. It was also very easy to install. Some of the bolts are a little tight to get to but doable. 421068



- LC328330
by:

I purchased it as a direct replacement for the damaged on on my fifth wheel. 355887



- LC328330
by:

I haven't opened the box yet, but it was shipped as fast or faster than I ever thought possible. As far as the product goes i am sure it arrived safe and sound. Good job! 289397



- LC328330
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. 272725



- LC328330
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! 250771



- LC328330
by:

arrived ahead of time in great shape. Have not put on yet. 247054



- LC328329
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


Helps take the bumps out of our wonderful roads. 681550



- LC176440
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


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. 603833



- LC328329
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


I received the pin box in good condition. Preparing to install. Much anticipation to get rid of present air ride hitch which is woefully inadequate. 576710



- LC328329
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


Switched from a ball. Glad I did. Very well pleased. 565223



- LC176440
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


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 525560



- LC176440
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


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. 435592



- LC176440
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


Works great eliminated the jaring. Also shorter so I can make a hard turn without touching the sides of my box 416803



- LC328329
by:

Review from a similar Trailair Rota-Flex in Fifth Wheel King Pin


Drove well 234094


25
25

Ask the Experts about this Lippert Components Fifth Wheel King Pin

  • Recommended Sidewinder and Reese 5th Wheel Hitch for Use with a 2018 Ram 2500 Short Bed with Ram Box
    You definitely have the right setup in mind. Since the Ram Box on your 2018 Ram 2500 with a short bed limits the inside width of your truck bed a Sidewinder is the only viable solution. I called my contact at Lippert who said that your Trailair Rota-Flex has the pin box number 1621 according to the serial number, making it part # LC328330 on our site. For a Sidewinder that is a compatible replacement you can use part # RP34FR. We also have the 5th Airborne Premium # RP61422 which adds...
    view full answer...
  • Recommended Capture Plates for Trailair Rota-Flex Pin Box with Demco Hijacker Autoslide
    It looks like you might have a Trailair Roto-Flex 5th Wheel Pin Box like # LC328330. I do recommend confirming this by locating the model name of your existing pin box. If this is the case, then to use the Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 referenced in your question, you will just need to add the Demco Hijacker Capture Plates # DM6171. These capture plates are designed specifically for the Trailair Rota-Flex pin boxes and will prevent the king pin from pivoting...
    view full answer...
  • Gooseneck to King Pin Adapters Compatibility with Grand Design Solitude with Rota-Flex Pin Box
    The Ranch Hitch Universal 5th-Wheel-to-Gooseneck Coupler Adapter # AM3100 will not work with any cushioned pin pox like a Rota-Flex, however there are a couple of options for you to make the Solitude compatible with your gooseneck hitch. One option is to use the Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter - Single Jaw - 21,000 lbs # DM8550045. This allows you to keep your current pin box and will simply install over your gooseneck ball for an easy connection to your truck....
    view full answer...
  • Can a 5th Wheel Trailer Pin Box be Safely Extended 12 Inches
    I do have some potential solutions for you but there isn't a safe way to extend a 5th wheel trailer pin box. An extension would add additional stress to the trailer frame leading to damage or failure. In order to move the pivot point of a trailer you can use either a slider 5th wheel trailer hitch in the truck OR a Sidewinder pin box on the trailer. If you already have a hitch and don't want to change it then we would need to look at Sidewinders. The Sidewinder will not extend the pin...
    view full answer...
  • Lippert Solid Step Manual RV Steps for 24-Inch Wide Doorway
    Based on your doorway width and your ground-to-threshold dimension you can use the Lippert Solid Step Manual Fold-Down Step # LC698799. This works for doorways that are 24 inches wide and that have a height of 27- to 36-inches. Weight capacity is 400-lbs. You will need to supply your own mounting hardware or re-use the original hardware.
    view full answer...
  • Will Trailair Rota-Flex Keep Fifth Wheel at Same Height When Replacing Lippert 1621 Pin Box
    I reached out to the manufacturer and got the specs for both the Lippert 1621 5th Wheel Pin Box # LC1191191 and the Trailair Rota-Flex # LC328330 which it is designed to replace. These pin boxes have very similar dimensions, though the the Rota-Flex is about an inch lower overall. This small difference should allow you to keep your trailer level, though you may need to slightly adjust the height of your truck's fifth wheel hitch. The Trailair Rota-Flex # LC328330 will be an upgrade...
    view full answer...
  • Recommended Lifting Bracket And Crane For Removing 5th Wheel Hitch
    I reached out to PullRite and they said you can definitley use the trailer to remove the hitch from your truck, but you don't want to leave it hanging there. They suggest lowering onto saw horses or another sturdy surface. That is a lot of weight to leave on your pin box and king pin as well as the jaws of your hitch. I know that there are people that will use the MaxxTow Hydraulic Pickup Truck Crane for 2" Hitches - 1,000 lbs # MT70238 along with the Demco 5th Wheel Lifting Bracket...
    view full answer...
  • Replacement Pin Box Recommendation for StarCraft Fifth Wheel Trailer
    The best pin box for you will depend on what you want to accomplish. In a 'good, better, best' scenario, the Lippert Rota Flex # LC328330 would be the good option. The king pin sits on a rubber dampener that allows the king pin some fore and aft movement which helps to absorb some of the chucking and jarring by helping to isolate the trailer's movement from the truck. The Trailair Air Ride, part # LC158778 would be the better option. The inflatable air bag and shock absorber work together...
    view full answer...
  • Changing the Rubber Jounce Stops in a Rota-Flex Pin Box
    I can tell you the procedure for replacing the jounce stops on the Rota-Flex pin box though the exact replacement parts are not available like you said. They are a rubber compound but the specifics of it I do not know. 1. With Long Needle-nose pliers, from the back of the pinbox, squeeze tag ends of Cotter Pin together and push it out of the Front Jounce Stop and it’s channel. Cotter Pin may need to be pulled out from the front of the pinbox to completely remove it from the Jounce Stop. 2....
    view full answer...
  • Length of King Pin on Lippert 1621 Pin Box
    I believe you are simply asking the length of the king pin on the Trailair Rota-Flex 5th Wheel Pin Box # LC328330. I reached out to the manufacturer who said that the king pin on this pin box measured 3.29 inches. I have added a photo showing other dimensions of this pin box for you to take a look at as well; this pin box is a direct replacement for Lippert 1621 pin boxes and is designed to make your towing experience more comfortable with the rubber compound in the pin box head that...
    view full answer...
  • Using Trailair Replacement King Pin with Andersen Ultimate Connection
    I checked with Andersen and they do state that their Ultimate 5th Wheel Connection can be used with the Trailair Rota-Flex 5th Wheel Pin Box like the part # LC328330 that you mentioned. As you referenced, you will just want to use the Rota-Flex Lockout Kit to prevent the rubber pad from shifting over time. We do not currently have this part available. The Trailair Rota-Flex Pin Box is a great pin box replacement that features a pivoting head and a built-in rubber compound that will work...
    view full answer...
  • Cushioned Pin Box Recommendation for Replacing Leland 7920
    We have great options for cushioned pin boxes that are designed to replace your Leland 7920 but the fits for a Lippert 1621 are not correct. The most similar to the RotaFlex is the Trailair # UF35-946208 which has a 19k capacity and a parallel linkage system that allows the king to move forward and back to help reduce chucking. This does an excellent job reducing noise and banging and also has a great price so we recommend it highly.
    view full answer...
  • Adjusting Lippert Components Rota-Flex 5th Wheel Pin Box
    In order to resist the chucking (fore and aft jarring movement) experienced, the swiveling skid plate is pretty stiff by design. The relatively gentle jarring experienced during hitching will not move the plate much at all but any chucking experienced during travel will be dampened by the pin box. The bolts that hold the skid or pin plate to the pin box are properly torqued during the assembly process, and for safety reasons should not be loosened. Once the pin box is installed and...
    view full answer...
  • Will Ultra-Fab Rota-Flex 5th Wheel Pin Box Work With B & W Companion Fifth Wheel Hitch
    The king pin on the Ultra-Fab Rota-Flex 5th Wheel Pin Box, part UF35-946202 you said is on the new trailer you are receiving will work with any fifth wheel hitches so you will have no problem with compatibility with the B & W Companion hitch.
    view full answer...
  • What are the Dimensions of the Trailair Rota-Flex Pin Box # LC328330
    I went out to our warehouse to measure the Trailair Rota-Flex Pin Box, # LC328330, and found that the width is 12 inches. When measuring the length of a pin box, you want to find the distance from the center of the king pin to the bolt holes. The distance from the front row of bolt holes to the center of the king pin is 17-3/4 inches. The distance from the back row of bolt holes to the king pin is 25-5/8 inches. A few other measurements that you will want to consider are the bolt hole diameter,...
    view full answer...
  • How to Determine What Pin Box a Trailer has For Trailair Replacement
    If you have a Lippert 1621 pin box on your 2008 Timberland RPM Series, Model 295FB the measurements will match exactly what is in the chart of the FAQ article I attached. Close isn't enough, they have to be exact. If you wanted to take all of the necessary measurements and email me back with the exact measurements I can see if there is a replacement that would work. Pictures of the measurements can be misleading so that wouldn't be necessary. If you could give me the needed measurements...
    view full answer...
  • Recommended Replacement Fabex 560 Pin Box for Better Turning Clearance
    I can help you find a solution to your clearance issue but you will not want to drill into the Rota-Flex 1621 because it can damage the structure integrity of the unit. Instead for your Fabex 560 Pin Box, I recommend the # 5AB-S500-700 Air Ride Coupler or the # RP61412 Air Ride King Pin with Sidewinder. These two models are designed for your specific pin box and will mount up perfectly. They will also give you a smoother ride and extend your pin box for better clearance. I have...
    view full answer...
  • Dimensions of the Rota-Flex 5th Wheel Pin Box # 328330
    The Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs # LC328330 does require capture plates for the Demco Hijacker autoslide that is similar to the Pull Rite Autoslide you have. The measurement from the front of the plate to the king pin is 4-1/2 inches. The overall plate is 11.387 inches by 12.655 inches.
    view full answer...
  • Difficulty Getting Jaws to Open on B&W Companion Hitch with Rota-Flex Pin Box on Trailer
    The king pin on the Rota-Flex pin boxes does pivot and if you are parked on uneven ground then it is possible that the hitch jaws are bound up some. Moving the truck and trailer to level ground or even pulling forward or backward a little could be enough to release the tension and make it easier to uncouple the trailer. There isn't any sort of adjustment you can make on the pin box that would help. You could also try lubricating the moving parts of the hitch to make them easier to operate....
    view full answer...
  • Compatibility of Lippert Trailair Rota-Flex # LC328330 with Long Bed Truck
    The Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs # LC328330 is compatible with both long and short bed trucks. The turning clearance will be determined by the 5th wheel hitch. I recommend using a sliding 5th wheel hitch with a short bed versus a fixed hitch with a long bed. The Trailair Rota-Flex pin box will work well for you as long as you have a 1621 pin box you are wanting to replace. the Rota-Flex uses a pivoting head with a rubber compound integrated to...
    view full answer...
  • Is Trailair Rota-Flex Pin Box Available in 12-3/8 Inches Wide?
    The Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 -18,000 lbs # LC328330 and the 21,000 lbs # LC328329 are 12-1/2 inches wide. The sizes of pin boxes for width are simply 12 inches or 12-1/2 inches so you would definitely want the 12-1/2 inch pin box. You will want to check your current pin box number which should be on a sticker on the actual box itself. If not there, you will want to measure your mounting bolts to ensure the correct fit. I've attached an article to assist...
    view full answer...
  • How to Make it Easier to Hitch and Un-Hitch 2015 Momentum 385TH 5th Wheel with Rota-Flex Pin Box
    The Rota-Flex pin boxes like # LC328330 are designed to pivot front-to-back to reduce chucking while you tow but they are not able to pivot side-to-side to make hitching and un-hitching easier when your truck and Grand Design 5th wheel are not both perfectly level. For that concern a 360-degree-pivoting 5th wheel hitch like the 24K Curt # C16245 will help. This hitch head can pivot in any direction, which means that when your trailer's king pin is not perfectly level and straight the...
    view full answer...
  • Improved Turning Clearance with 2015 Ram 2500 and Keystone 5th Wheel with Fabex 663 Pin Box
    We have replacement pin boxes that will work for you, but the Lippert Components Trailair Rota-Flex 5th Wheel Pin Box # LC328330 is not a compatible replacement for a Fabex 663 pin box. The # LC328330 is designed as a replacement for the Lippert 1621 pin box. The measurements between the Lippert 1621 and Fabex 663 are similar in some aspects, but very different in others. I have attached a help article on measuring to determine the correct replacement pin box for you. It includes a...
    view full answer...
  • Can Rota-Flex Pin Box be Used With Pullrite SuperGlide 5th Wheel Hitch
    Yes, the Trailair Rota-Flex 5th Wheel Pin Box # LC328330 can be used with a Pullrite SuperGlide 5th wheel hitch. This particular model is designed to replace a Lippert 1621 5th-wheel pin box, so if that's what you have it would work for you. I have added a link to a video review of the Rota-Flex for you to check out.
    view full answer...
  • Can Demco Hijacker Fifth Wheel Hitch be Used with Lippert Trailair Pin Box
    Yes, a Demco Hijacker like part # DM8550034 can be used with the Trailair cushioned pin boxes like the part # LC328330. As long as it's not a FlexAir pin box you would be fine.
    view full answer...
  • Locating Replacement Pin Box for Lippert Rota-Flex 5th Wheel Pin Box
    If you are looking to replace/upgrade your Rota-Flex Pin Box like # LC328330, you will need to replace the entire assembly. In order to choose a compatible replacement pin box, you will first need to determine the model number of your original pin box. You can also give me the part number of your existing Rota-Flex unit and I can use this to recommend a replacement. Replacement pin boxes are designed to replace the standard king pins on trailers so this information is needed to ensure...
    view full answer...
  • Do I Need to Replace My Pin Box to Use The Andersen Ultimate Hitch?
    You won't be able to get a longer/shorter pin box to match your Lippert 1621 pin box like # # LC328330 . Additionally, when using the Andersen Ultimate Hitch # AM3200 you can use the adapter that comes included with the system to turn your 5th wheel pin box into a gooseneck receiver to work on the Ultimate. Basically, the Andersen Ultimate comes with everything you need to make it work with your 5th wheel king pin, so there won't be any need to replace your pin box or get an adapter.
    view full answer...
  • Best Pin Box Replacement Recommendation to Improve Ride Quality for 2017 Big Country
    The all-around best solution will be the Sidewinder/5th Airborne part # RP61422 which has a cushioned air bag to make the ride quality smoother and also has a pivoting mechanism that allows the trailer to pivot 22 inches further back than normal so that you have better turning clearance, a trailer that tracks better around corners, and is easier to back up. If you are wanting something to improve your towing experience this is the best solution by far. It has a 16k capacity like your...
    view full answer...
  • Rota-Flex Cushioned Pin Box to Replace OEM Lippert 1621 Pin Box
    The Trailair Rota-Flex 5th Wheel Pin Box # LC328330 will bolt right up in place of the Lippert 1621 OEM pin box. Your pin box should have a sticker on its left side that indicates its brand and part number. So long as it is a Lippert 1621 the Rota-Flex will fit perfectly in its place and provide you with the benefits of a cushioned ride. Thanks to its pivoting head and rubber cushions the Rota-Flex will reduce road shocks and chucking. The pin box comes fully assembled.
    view full answer...
  • Which Trailair Rota-Flex 5th Wheel Pin Box Fits a 2013 Dutchmen Voltage V3105
    Thank you very much for all the information. I was able to use this and determine that you have a Lippert 1621HD pin box. Therefore the correct replacement for your 2013 Dutchmen Voltage V3105 is the Trailair Rota-Flex 5th Wheel Pin Box part # LC328330. There will not be any issues using the Trailair Rota-Flex 5th Wheel Pin Box with your B&W Patriot 5th Wheel Trailer Hitch w/ Slider part # BWRVK3270.
    view full answer...

Do you have a question about this Fifth Wheel King Pin?


Used Items Available

Condition: Surface Scratches

Notes: Item has sticker remains and residue on it that is only a cosmetic issue as well as some minor scrapes/scratches. Otherwise new and unused.

Our Price: $591.43
Secure Checkout


  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality fifth wheel king pin for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate fifth wheel king pin information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Jeffrey L
Edited by:
Lindsey S
Video Edited:
Jacob T
Written by:
Chelsea B
Installed by:
Randy B
Video by:
Jonathan Y

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.