Fifth Wheel King Pin

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Reese

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663

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665

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0719

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1621

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1621HD

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663

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665

Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs

Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs

Item # RP61420

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Retail:$1,329.39

Our Price: $1,246.68

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Fifth Wheel King Pin

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Shipping Weight: 149 lbs

Quantity: 
RP61420 - Provides Turning Clearance Reese Pin Box Upgrade
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This premium fifth-wheel pin box coupler replaces your trailer's king pin for worry-free turning with short-bed pickups. Now you can make up to 90-degree turns without having to exit the truck, throw a switch or push a button. Call 800-298-8924 to order Reese fifth wheel king pin part number RP61420 or order online at etrailer.com. Free expert support on all Reese products. Guaranteed Lowest Price and Fastest Shipping for Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs. Fifth Wheel King Pin reviews from real customers.
  • All Info
  • Reviews (31)
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Reese Fifth Wheel King Pin - RP61420

  • 663
  • 665
  • 0719
  • 1621
  • 1621HD
  • 663
  • 665
  • Fabex
  • Lippert
  • M and M
  • Provides Turning Clearance
  • Reese
  • 16000 lbs GTW
  • Pin Box Upgrade
  • Non-Cushioned
  • Rotating Turret

This premium fifth-wheel pin box coupler replaces your trailer's king pin for worry-free turning with short-bed pickups. Now you can make up to 90-degree turns without having to exit the truck, throw a switch or push a button.


Features:

  • 5th-Wheel trailer's pivot point is moved an extra 22" toward the rear of your tow vehicle so that you can easily make 90-degree turns, even with a short-bed pickup truck
    • No need to get out of your truck, throw a switch, push a button or mount a 5th-wheel slider
    • Trailer tracks more closely to the truck for better driveability
  • Sidewinder-and-turret assembly bolts onto your 5th-wheel trailer pin box
  • King pin connects to standard 5th-wheel trailer hitch and allows easy hookup and disconnect at any angle
  • Included locking wedge prevents king pin from rotating
    • Some 5th-wheel hitches may require custom wedge (sold separately)
  • 1-Piece, streamlined construction
  • C-Channel design of the Sidewinder provides more stability and strength than standard pin box
    • Able to support heavier loads


Specs:

  • Designed for use with the following pin boxes:
    • Fabex 663 and 665
    • Lippert 0719, 1621 and 1621HD
    • M&M 663 and 665
  • Weight capacity: 16,000 lbs
  • Clearance: see formula below to ensure proper clearance
  • 3-Year limited warranty


Clearance Formula

Use the formula below to ensure that there will be enough space between your truck cab and trailer when you are executing a 90-degree turn with the Sidewinder installed.


(A + B) - C = Clearance

A = Distance from center of 5th-wheel hitch jaw to truck cab in inches

B = Length of Sidewinder arm in inches (22")

C = Width of trailer in inches divided by 2


For example:

If you are using the 16,000-lb Sidewinder, then B = 22"

If the distance from the center of your hitch to your truck's cab is 36", then A = 36"

And if your fifth-wheel trailer is 102" wide, then C = 51"

102/2 = 51

Therefore,

(36 + 22) - 51 = 7" of clearance


The Sidewinder

Sidewinder Diagram
  1. The pivot point sits 22" behind the king pin.
  2. The rotating turret attaches to the pin box on your trailer to provide the new pivot point.
  3. The reversible, adjustable king pin locking wedge (not pictured) prevents pivot at the 5th-wheel hitch.
  4. The king pin connects to the 5th-wheel trailer hitch in your truck bed.
  5. The arm is rated at 16,000 lbs.

Up to 90-Degree Turning

90 Degree Turns with Sidewinder

It is now possible to turn your short-bed truck 90 degrees without having to worry that your trailer will collide with the cab of your truck. The universal king pin locking wedge included with this Sidewinder prevents your trailer from turning or pivoting at the fifth-wheel hitch. Instead, the rotating turret at the end of the Sidewinder allows turning and pivoting to take place an additional 22 inches away from the cab.


King Pin Locking Wedge Locations for Specific Hitches

Sidewinder Locking Wedges

1. Draw-Tite, Hidden Hitch and Reese (15K, 16K and 20K Select Series); Husky; Owens; Valley; and similar units

2. Reese Signature Series, Elite Series and similar units

3. Holland and similar units


A. Bolt locations

B. King pin


Custom King Pin Locking Wedges: The included universal wedge prevents the king pin from rotating in most fifth-wheel trailer hitches. Certain hitches, however, require a custom wedge (sold separately).


Note: Do not use the Sidewinder with any of the following:

  • Curt Q Series 5th-wheel trailer hitches
  • PullRite SuperGlide 5th-wheel trailer hitch
  • Reese Trail Boss 5th-wheel trailer hitch
  • B&W Companion 5th-wheel trailer hitches that mount in the Turnoverball gooseneck hole
  • Colibert 208BW 5th-wheel trailer hitch
  • Hi-Rise gooseneck-to-5th-wheel adapter by Draw-Tite, Hidden Hitch, Bulldog and Reese
  • Any other gooseneck-to-5th-wheel adapter

Note: All Pro Series fifth wheel hitches with slide bar jaw require use of Sidewinder Wedge Kit for Pro Series (30850 - sold separately).




61420 (SW16K and 61300) Fifth Airborne Side Winder Fifth-Wheel Pin Box Coupler with Turret and Hardware

Replaces ST200-SW16K



RP61420 Installation InstructionsInstallation Details RP61420 Installation instructions



Video of Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs


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




Video Transcript for Reese Sidewinder with Rotating Turret Review

Speaker 1: Today, we're going to be taking a look at and reviewing Reese's Sidewinder Fifth-Wheel King Pin with Rotating Turret. Part number, RP61420.The Sidewinder's going to be an all in one solution for your turning maneuver needs with your fifth-wheel trailer.It's going to reposition the pivot point from your king pin, 22" back. Moving the pin back will be ideal for short bed trucks, where clearance between your trailer and your cab is too tight for close corner maneuvers.When comparing this to other options on the market, such as manual and auto sliders, you're going to get further travel, as most sliders only offer a foot to a foot and a half, where this has 22 total inches.Manual sliders are going to cause you to have to get out of the truck to position it back, get back in and then make your tight corner and then reset it again. Whereas, this is always going to be in position ready to go at all times. Set it and forget it.And when compared to auto sliders, which also eliminate the need to get out of the vehicle, this is going to give you considerably longer length. Nearly double that of some auto sliders.The design functions by using a locking wedge that goes up against your king pin.

This prevents your trailer from pivoting on the king pin and moves it back, so your pivot point is significantly further away from your vehicle, extending that distance between your cab and your trailer.Your universal wedge has a storage position that it can be placed in. In case you've got a second, or a custom wedge and when it comes to drivability, moving the pivot point back will allow you to not have to turn as wide to clear curves.Let's show you how to get your wedge position and hooked up to the vehicle.To set your wedge position, you need to hook up your trailer to your truck. Now, it's very important when backing up that you get your truck as straight as possible. In line with your Sidewinder. Make sure that your wedge is loose when doing so.

So it can be easily adjusted once you're lined up.Now that you've got your truck and trailer all lined up, take a hammer and tap your wedge all the way forward.Once you're all the way in, you can go ahead and snug it up.Now, there are two orientations this can go in, depending on your fifth-wheel. There's a wider and a smaller wedge end. On this particular fifth-wheel, we're going to be using the smaller wedge end away from the fifth-wheel.Now you've got it snugged, you can go ahead and pull your vehicle forward to make sure everything's in a straight line. Then we can go back, tap it forward, to make sure it's all the way seated and torque it to the specification in our instructions.Now, I've already opened up our box and laid out our components. We're going to need to do some disassembly on this, so we can install our turret onto our king pin.Using a 15/16 socket, remove the four bolts on the top of your unit.

Then remove the plate and set it aside. Slide your plate up and ensure that the champer is facing down. Slide that back on. Use some white lithium grease and apply it to the top of the plate and then also apply lithium grease all around our collar here. Make sure you get a good layer of white lithium all over your components and then you can use a piece of cardboard from your box to smooth it out and make sure it's evenly placed across the whole plane.

Then do the same around the side of your push in collar.The Reese logo will face towards your king pin. Go ahead and slide it on your collar. Make sure it's fully seated.Now take your gray spacer, place it over the collar and put the cap back on that we removed earlier. Reinstall it with the same hardware we removed.At this time, we just want to snug it down. We don't want to get it all the way tight.Now that your bolts are snug, check your disc all the way around and make sure that the spacer is fully seated. After you've made sure it's fully seated, go ahead and tighten your bolts all the way and then we're going to torque them per the specifications in our instructions.The main purpose for our initial torquing that we did there, was to make sure everything's fully compressed and properly seated. Now, this is tighter than you want in your normal operation, so now the bolts will be released and then re-torqued for operating torque spec.Now that we've finished our pre-assembly, we're ready to remove our old fifth-wheel and install our new one on our trailer.Our original king pin here must be removed, so we can get down to the bare pin box. There are six bolts on this unit per side. We're going to remove four bolts now, leaving the lowest in place until we get a suitable support so we can remove it safely.You're going to use a 15" socket and a 15" wrench to remove the bolts. Hold the bolt with your wrench and loosen the nuts. We'll just leave our lower nuts there until we're ready to disassemble.Now we can take our bolts out. We're going to leave our bottom ones in to hold it in place. We're going to remove our middle and top bolts. Now, to get our top bolts out, we're going to need to loosen our trim, so we can push it up or down to get the bolt to come out.Now's a good time to take a look underneath, to make sure you've got the proper clearance to lower your hitch. Now in our case here, our breakaway switch has loops that are run up to our vehicle and these loops are going to contact our hitch when lowering it down. So, we're going to need to remove this loop.It's a good idea before removing your hitch to take a measurement from the ground to the bottom plate by your king pin. This way, you know what position to put it in when reinstalling your new hitch.Now that everything's loose, we've made all our preparations, we're ready to lower down our old hitch. Now, you're going to want to probably grab a few extra friends to help you do this, to support it up there. In our case, we're going to use a fork truck.Now we've got our forklift in place, we're going to lift it up to support our hitch. Now with all your bolts fully removed, lower it down slowly, making sure you don't get caught on anything.Once you're down and clear, you can move it out of the way and prepare to set up your new hitch.Now go ahead and get your new hitch into position. When you slide your bolts through, you want to have your bolt and a flat washer on it. Once you've got the two towards the rear of the trailer installed, you can come back and do the two towards the front. Once you've got all four bolts in position, go ahead and slide your conical tooth washer on, with the teeth facing inward towards the head of your bolt and thread your nut on. Repeat this for the remaining three bolts and then the hitch will stay into position. Go ahead and place the ones above it in. There'll be a total of four as well, in the same position. Just slightly up from your lower bolts.Okay. Now that you've got all your bolts in, you can put your conical tooth washers and nuts on them as well.With all your hardware in position, go back and tighten it up using a 15/16 wrench and 15/16 socket.With all of our hardware snugged down, we can go back and torque it per the specifications in our instructions.Now, with everything installed, we can grease our king pin. We'll do this all on the king pin and around the king pin and again, you're going to do it the same way, where you're going to wipe it evenly across the whole surface. After you've greased your king pin, remove your wedge from the storage position. Now you'll grease both sides of your wedge and we're going to place the smaller end of the wedge facing down and install it into the two bolts into this position.And that completes our look at Reese's Sidewinder Fifth-Wheel King Pin with Rotating Turret. Part number, RP61420.


Customer Reviews

Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs - RP61420

Average Customer Rating:  4.6 out of 5 stars   (31 Customer Reviews)

This premium fifth-wheel pin box coupler replaces your trailer's king pin for worry-free turning with short-bed pickups. Now you can make up to 90-degree turns without having to exit the truck, throw a switch or push a button.

- RP61420
by:

Great product this sidewinder did the job for me and as for etrailer.com shipping was was great called one day the next day if was at my door....... thank you ... 444668



- RP61420
by:

Very nice pin box. Does what was advertised. Creaks when I first start to leave with the fifth wheel. Best aftermarket product I have found, it really shortens the turning radius , and It stays at the angle you parked, that helps when you hitch up in tight areas. 625494



- RP61420
by:

Thank you Donna for all your help using the formula to identify the right Reese Sidewinder Pinbox, and even when our call was disconnected, you called me back, plus you letting the customer know prices fluctuate and can change within 30 days. Even though I paid a higher price as purchase time, in the end, I actually got the ideal price I wanted from the beginning, but couldn't have done it without you informing me. Now that everything is complete, I am a happy camper, ready to go travel. You are valuable asset to the company. Thanks again so much for your assistance! Dana R., Texas 569569



- RP61420
by:

Overall the product was very good and well built. They only problem I had was during installation, there were weld spatter through out the bearing surfaces. Once I cleaned that out, I was very happy with how the trailer pulled and handled. 520252



- RP61420
by:

I called to verify what a local RV dealer had informed and tried to sell me. E trailer customer service was great. I submitted my order and in the specified time it arrived as presented. I inspected all of the boxes to confirm all parts were accounted for. Everything was still in the boxes even though they were abused badly in shipment (carrier damage). I will be having it installed in a week. Can't say enough about the quality of the product and customer service. 503333



- RP61420
by:

Great solution to short bed trucks. However, I have been able to prevent the hitch from binding at slow speeds. It is not enough to prevent movement but it pops with enough force to shake the truck. I have leveled the trailer but the binding remains. 596167


Comments

Sometimes the noise and binding can be caused by failure to routinely lubricate the sidewinder. I have attached a link that will help with lubrication maintenance.

-- Heather A - 02/01/2019

49141

- RP61420
by:

The items were packaged well and did not have a scratch on anything. All hardware was included. I am impressed how wel this unit is built. It is built with much heavier metal than the stock pin box that came off, which is reassuring to me. I was able to install this using a table, some blocks and a floor jack without additional help, but it would probably be quicker if additional help were available. This will definitely give me peace of mind when traveling and make it one less thing to worry about when turning/backing. Great product and service. 187953


Comments

The Sidewinder is working great. The short turning radius is a plus in addition to peace of mind that it wont be hitting the cab of the truck if I have to make a sharp turn. Im glad I got this instead of the sliding hitch.

Randy - 04/23/2016

17577

- RP61420
by:

Easy to put together and install the sidewinder kingpin box and fifth wheel hitch brackets were also easy to install on my 16 Ram 2500 thanks for fast delivery great costomer service and parts 380678



- RP61420
by:

The "wedge" block that changes the pivot point on the fifth wheel it makes the camper very difficult to hook up to unless you back in at the exact same position as when you unhitched. Even still it does not allow the jaws to close completed without repeatedly trying. This is not a product I would recommend. 258254



- RP61420
by:

Great customer service and quick shipping from Etrailer. Sidewinder was very easy to assemble. One of the bolts on the turret that's partially installed at the factory had be cross threaded, but a 5/8-11 trap easily cleaned up the threads. (I'm sure Etrailer would have replaced the defective part if I had contacted them, but the fix was easy) Installation was very straight forward, but it is very heavy. At least twice as heavy as the original pin box. I installed mine by myself by using a motorcycle lift table. The Sidewinder I got was obviously designed to fit many different types of 5th wheels because it had clover leaf type bolt holes to accommodate different bolt patterns. I did have to wrestle with it a little to get the proper holes to align. I also discovered that I couldn't install it into the upper most set of holes on my 5th wheel even though my original pin box was installed there. When installed in those holes, the "ears" of the bracket on the RV would have interfered with the rotation of the Sidewinder, so I moved it down to the next set of bolt holes. The instructions do mention this requirement. I was also pleasantly surprised that my kit came with replacement hardware to attach the new pin box that is higher quality than the originals (Grade 8 vs Grade 5) We took the 5th wheel out for a test drive after the installation and I was very impressed with how easily I could make 90 degree turns with a short bed truck. I also noticed a significant positive difference in how the RV tracked behind the truck. I definitely don't have to swing as wide to make corners as I did before installing the Sidewinder. I'm very happy with the Sidewinder and the purchase through Etrailer. 546809



- RP61420
by:

Very satisfied with the Sidewinder pin box with turret. Installation was not too difficult. We installed it on our 2005 Puma 5th wheel. The installation video was helpful. It is a little tricky hooking up as many have said but worth it. I really prefer this option over a slider hitch which were our two choices for towing with a Ram truck with 5-1/2 foot bed. The delivery was quick but the packaging was a mess. The cardboard box was all tore up form the delivery. Some other type of packaging might be better for such a heavy item. All things considered this was a good purchase. 620275



- RP61420
by:

I ordered my RP61420 sidewinder on 5/8/17 around 4pm and received it on 5/12/17 at 2pm in good condition and complete. ( FREE SHIPPING ) We installed it on 5/13/17 following all instructions included with the sidewinder ( VERY SIMPLE ) I put it on a 2004 - 286 cougar 5th wheel trailer, being pulled by a 2010 F-150 King Ranch ( super cab) with a 5.7 short bed box. The sidewinder allows me to make a 90 degree turn, ONLY when truck and trailer are on PERFECTLY level ground and then, I only have about a 2 inch clearance between back of cab and front of trailer. Before the sidewinder my turns were very limited. The sidewinder is very well built and rated at 16000 lbs. All of the questions and answers with etrailer.com ( JARED P.) were very helpful to find what I needed with my problem of clearance between truck cab and trailer. It is TRICKY to hook up to with the wedge that locks into the 5th wheel hitch, but I think its worth it when able to make sharper turns in traffic. The Reese Sidewinder with with Rotating Turret is also hooked into a Reese 5th wheel hitch. Great products Reese, Leo C. 381609



- RP61420
by:

The cheapest way to make a 5 1/2 bed truck pull a 5th wheel ! Gives plenty of room between truck cab and trailer when turning ! Easy install too ! 718339



- RP61420
by:

Excellent product, does what it is advertised to do. It is helpful to have at least one other person during installation. Instructions are helpful. 699069



- RP61420
by:

Perfect! 667834



- RP61420
by:

great product I put this on my 5th wheel camper as a replacement to allow me to turn and not make contact works great and was easy to install 665387



- RP61420
by:

The Reese fithwheel sidewinder hitch has worked great kept me from buying a slider hitch I would give 5 stars 637929



- RP61420
by:

Fast great service, ordered on Wednesday received on Friday. Highly recommended ! 548105



- RP61420
by:

Product works as advertised and very fast shipping . 482551



- RP61420
by:

Great Customer Service at all levels. These people do exactly what they say they are going to do. I spent about $1800 for my fifth wheel, rail kit, sidewinder and custom wedge. This was money well spent as everything works great. 467628



- RP61420
by:

Received the hitch in record time, and customer service was outstanding. "1 call does it all!" should be their motto. Could not be happier. 466178



- RP61420
by:

This product works great very safe too 428065



- RP61420
by:

unit works very well. 419115



- RP61420
by:

Had it installed at dealer when picked up 5th wheel I had it assembled. Had to take it off and redo it. It takes two people or a platform to rest it on. It's not like a regular pin you have to be dead on in backing and something aggravating but it does work good. Have gotten also a 90 degree turn with this 399111



- RP61420
by:

Wonderful, it takes the worries out of tight turns with a short bed pickup. Installation is not difficult, takes two people due to weight of sidewinder hitch. 312668



- RP61420
by:

Love the way it protects my vehicle for too sharp a turn. Only problem is the reconnect to trailer. The wedge to keep the hitch from turning at the connection makes it very difficult to connect. 281408



- RP61420
by:

Excellent product, simple installation (with a little help from my neighbor). Hally at ETrailer was a pleasure to work with and helped me figure out exactly what I needed. Won't put it to use until the weekend but so far I've had a great experience!! 258954



- RP61420
by:

The sidewinder RP61420 bolted right up and has given the extra space that was needed so that the trailer would not hit the cab of the truck when turning. thanks for the great help from your staff. 198406



- RP61420
by:

very fast shipping and great customer service.Order on a Tuesday and had it two days. Will be a customer for life. Thanks Robert Davis 175085



- RP61420
by:

I just recived my hitch it looks amazing and was shipped so fast. My camper is in storage so I won't be able to put in on for awhile. I also bought brackets to install my hitch in my pickup and they are going to make installing it much easier. thanks for fast service. 167948



- RP61420
by:

I am very very impressed with the trailer experience. Fast shipping also, we pick up our fifth wheel Thursday. 158053


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Ask the Experts about this Reese Fifth Wheel King Pin

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


  • Advice on Towing a Fifth Wheel Trailer With a Short Bed 2017 Ram 2500 With Rambox
  • Thank you for your thoughtful question; let's start with the suspension components for your 2017 Ram 2500 first. I recommend using the Firestone Ride-Rite Air Helper Springs # F2598 over Timbrens for your application. The Ride-Rite air bags have the advantage of being able to adjust individually to guarantee you even load distribution, and are going to be less rigid than the Timbrens. As far as a fifth wheel hitch, you are going to have to use a Sidewinder because you have a Rambox...
    view full answer...

  • Lightweight 5th Wheel Hitch Option for a 2018 Ram 3500 Short Bed with the Factory Prep Package
  • I do have a really good option for you but the two you listed cannot be done safely. The Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter part # RP94720 cannot be used on your 2018 Ram 3500 because it has a short bed. If you were to use the Reese Goose Box the loft of your trailer would likely come into contact with the cab of your vehicle causing thousands in damage. The Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter part # DM8550045 cannot be used with a rotating...
    view full answer...

  • Recommended Reese Sidewinder Pin Box Compatibility with 5th Wheel Trailer
  • The Sidewinder pin boxes are pin box specific replacements so you will need to know the pin box of your new camper. For instance if it has an extended pin box like the most common Lippert 1621 extended pin box, then you would use the 16K # RP61420 or 19K # RP61421. Some pin boxes have an air ride version as well like the 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs # RP61422. The Sidewinder pin boxes will all move the pivot point of your...
    view full answer...

  • Converting Fixed Reese 16K 5th Wheel Hitch to Slider for Cab Clearance with 5-1/2 Foot Bed
  • It sounds like you have the Reese 16K 5th Wheel Hitch model # RP30047. If this is the case then you can simply replace the fixed legs with the Reese Square Tube Slider # RP30048 in order to convert it to a sliding model. Please keep in mind though that while a sliding hitch will certainly provide you with more cab clearance compared to a fixed unit, typically with a 5-1/2 foot bed a pivoting pin box on the trailer is needed to allow for 90 degree turns. The Reese slider will offer 10...
    view full answer...

  • Sidewinder Pin Box to Replace a Lippert 1621 to Improve Turning Clearance with 5th Wheel Trailer
  • It sounds like your fifth wheel trailer's pin box is making contact with your 2010 Ford F-150's side rails when you make turns. This is one reason why we recommend at least 6 inches between the underside of the trailer and top of your bed rails. One solution to your problem is a taller fifth wheel hitch but this sometimes can cause your entire setup to not ride level. Another solution, like you suggest may be a Sidewinder pin box. Sidewinders are designed to replace specific pin box...
    view full answer...

  • 5th Wheel Rail Kit for 2019 Ram 1500 Rebel
  • I checked with Reese and the correct custom frame brackets for 5th wheel base rails on your 2019 Ram 1500 Rebel is the part # RP56018. These brackets do require 48" wide base rails and for the complete kit including both the brackets and rails you can use part # RP56018-53. The # RP50142 bracket kit that you referenced is only a fit on the Ram up through the 2018 model year so they won't work on your 2019 model. Since your Rebel has a 5-1/2 foot bed the only way to tow a 5th wheel...
    view full answer...

  • Pin Box to Gooseneck Adapter for 2005 Wildcat 27RLWB
  • Long bed trucks typically don't need any help with cab to trailer nose clearance. What made you think you'd need more clearance? And what type of gooseneck adapter were you wanting to use?
    view full answer...

  • Will Sidewinder Allow 2016 Ram 1500 With Rambox to Make 90 Degree Turn?
  • In order to determine if a Sidewinder such as # RP61420 will allow you to perform a 90 degree turn with your 2016 Ram 1500, you first need to measure the distance from the center of your fifth wheel hitch jaw to your truck's Rambox.You will also need to know the width of the trailer you will be pulling. You can then use this formula to find out if you can do a 90 degree turn: (A + B) - C = Clearance A = Distance from center of 5th-wheel hitch jaw to Rambox in inches B = Length of Sidewinder...
    view full answer...

  • 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 # RP61420. We also have the 5th Airborne Premium # RP61422 which adds...
    view full answer...

  • Is the Lippert 1621 an Extended Pin Box
  • The extended notation you have mentioned for the Lippert 1621 5th Wheel Pin Box part # LC1387883 is in regards to the style. This is also know as the "long" style and there are several other pin boxes with this style that have similar dimensions but they are not designed to move the king pin. If you take a look at the attached photo and help article that should then make things a bit more clear. The only way this extended/long style will move the kingpin further out is if you were using...
    view full answer...

  • Recommended 5th Wheel Hitch and Sidewinder for 2018 Toyota Tundra Crew Max with 5.5 Foot Bed
  • For your 2018 Toyota Tundra Crew Max with 5.5 foot bed, there is not a sliding 5th wheel hitch compatible. A Sidewinder is required for proper turning clearance on a truck with that short a bed length. I recommend using the Reese Quick-Install Custom Installation Kit w/ Base Rails for 5th Wheel Trailer Hitches # RP50084-58 which are a custom fit for your truck. I then recommend using the Reese 5th Wheel Trailer Hitch - Dual Jaw - 16,000 lbs # RP30047 to give you a good hitch compatible...
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  • Will Curt A20 Fixed Fifth Wheel Hitch fit in 2017 Ford F-250 Short Bed With Factory Rails?
  • The Curt A20 with Ford OEM Legs # C16034 will fit into the puck system of your 2017 Ford F-250. However, there may not be enough clearance on tight turns and your trailer could very well hit the cab of your F-250, so it is strongly recommended you use a Sidewinder with this hitch as a way to protect your cab from damage. Otherwise, you may want to consider Curt Q20 # C16530-16020, a sliding hitch which also fits in the factory puck system of your '17 F-250. Should you want to go with...
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  • Fifth Wheel Hitch and Sidewinder Recommendation for 2017 Ram 1500 5-1/2' Bed
  • The Max Turn Technology feature of your Keystone Cougar basically is a narrower nose that allows better clearance with short bed trucks. But since your truck bed is 5-1/2 feet you still would need a Sidewinder as the added clearance is not going to be quite enough. Your trailer should have a Lippert 1621 pin box so the correct Sidewinder would be the part # RP61420. I'd still recommend verifying the pin box since you didn't mention the model of your Cougar. For a fifth wheel hitch you'd...
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  • Sidewinder and Fifth Wheel Hitch Recommendation for New Ram Towing Vilano 5th Wheel
  • Since your 5th wheel trailer has a Lippert 1621 pin box there is a Reese Sidewinder that will fit it as part # RP61420. This will allow a short bed truck like yours to make tight turns but you'll have to have a fifth wheel hitch installed in the factory rail kit. For that the best option is the B and W Companion hitch part # BWRVK3600 with the custom wedge part # SWW-06. This hitch with the Sidewinder will give you the best fifth wheel towing setup around! The Companion is very easy...
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  • Recommended 5th Wheel Rails and Hitch for 2018 GMC Sierra 1500 5.5 Bed for Reese Revolution Pin Box
  • A Reese Revolution is the equivalent of the Reese Sidewinder. The Revolution is the factory installed option and the Sidewinder is the very similar aftermarket option. For a 5-1/2 foot bed, a sliding hitch will not work, so the Revolution or Sidewinder route is the only option to provide you with turning clearance. The really good news is that is by far the ideal option even if you had a longer bed truck. For your 2018 GMC Sierra 1500, I recommend you start with the Reese Quick-Install...
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  • Reese Fifth Wheel Hitch and Rail Kit to Tow 2017 Cougar Lite
  • As long as the trailer you plan to tow has a Sidewinder or Reese Revolution pin box installed on it the Reese fifth wheel rail kit part # RP50142-58 and the Reese hitch part # RP30047 will fit and work well. Since your truck bed is 5-1/2 feet in length the best way to get the needed turning clearance is one of the pivoting pin boxes I mentioned. Since you have a 5th Airborne it's possible it's a Sidewinder/5th Airborne but you'd need to verify this. Either way though since you have the...
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  • Sidewinder Pin Box Recommendation for Lippert 1716 Pin Box
  • For a Sidewinder that does fit as a replacement for a Lippert 1716 we have the # RP61410 which has a 16k capacity or the part # RP61411 with a 19k capacity. Other option is the part # RP61412 which is a cushioned 16k Sidewinder. The part # RP61420 does not work for your pin box.
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  • Recommended 5th Wheel Towing Setup for a 2017 Ram 1500 with a 5-1/2 foot Bed
  • Since your 2017 Dodge Ram 1500 has a box that is shorter than 6 feet you will actually need to go with a stationary 5th wheel hitch and then change the pin box on your trailer to a Sidewinder pin box. There are no sliding 5th wheel hitches that will allow you to make a 90 degree turn with a truck that has a box under 6 feet. The Sidewinder takes the pivot point on your towing setup and moves it from the king pin back 22 inches to the rotating pin box. We have a selection of Sidewinders...
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  • Can a Slider 5th Wheel Hitch Be Used on a 2016 Chevrolet Silverado 1500 with 5.8 Foot Bed
  • I do have an option for you but a manual sliding 5th wheel hitch like the Curt E16 5th Wheel Trailer Hitch part # 16516 will not allow for proper turning clearance between the cab of the truck and loft of the trailer while executing a 90 degree turn on a truck with a bed shorter than 6-1/2' long. In order to obtain sufficient clearance you will need to use a fixed 5th wheel hitch and a rotating pin box. For a fixed 5th wheel hitch I recommend the Reese 5th Wheel Trailer Hitch part #...
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  • How to Pick Out a Sidewinder Pin Box for a Keystone Springfield Trailer
  • Sidewinders are pin box specific so you will first need to know what pin box you have know in order to pick out the correct one. There should be a sticker or a stamping on the OEM pin box of the trailer that will list the pin box number that is on the trailer. If you cannot find the number you can use the measurements of the bolt holes of the pin box to determine which one you have. I attached an FAQ on how to do this for you to check out also. Once you figure out which pin box...
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  • Sidewinder Pin Box Replacement Recommendation to Replace a Mor/Ryde SPB72-1621LD
  • Based on the part number you gave for your Mor/Ryde pin box it sounds like you have a pin box based on the Lippert 1621 pin box. Which then for the correct Sidewinder you would want the part # RP61420. Since your truck has a 5-1/2 foot bed the Sidewinder pin box is exactly what you need to give you the turning clearance you'll need.
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  • Is There An Under Bed 5th Wheel Mount Kit for a 2011 Ram 1500 with the 5-1/2 Foot Bed
  • I do have an option for you but they do not make an under bed mounting kit for your 2011 Ram 1500 with the 5-1/2' bed. Therefore, the only option you have is the above bed base rails which I know is not what you want but unfortunately, your only option. The base rails can be a pain if you need to slide something in but other than that they really don't take up much space. I recommend the Reese 5th Wheel Trailer Hitch part # RP30047 with the Reese Quick-Install Custom Installation Kit...
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  • Recommended Reese Sidewinder Compatible With Husky 16K 5th Wheel Hitch and 1621 Pin Box
  • The Sidewinder pin box is compatible with your Husky 16K slider as long as you keep it locked in the forward position as you stated. You will want the Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs # RP61420 for a standard Sidewinder to give you the 22 inches of additional turning clearance. Your other option is to upgrade that to the air ride version in the 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs # RP61422 to reduce chucking...
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  • Can a Sliding Fifth Wheel Hitch be Used with a Sidewinder Pin Box
  • You can definitely still use a Sidewinder with a sliding fifth wheel hitch. Like you mentioned, you would just leave it slid forward all the time and you would be just fine. The correct Sidewinder to use to replace your Lippert 1621 style pin box is the # RP61420. I attached an install video for this Sidewinder plus a help article on them for you to check out as well.
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  • 5th Wheel Hitch, Install Kit and Sidewinder Pin Box for Short-Bed Ram 1500
  • We can get you set to tow your 5th wheel with your Ram short-bed. For a base rail kit you can use kit # RP50142-58 which gives you a custom-fit for easier installation and less drilling. This kits uses frame brackets that mount to existing holes in the frame. Then for a cost-effective 5th wheel hitch you can use the Pro Series 16K hitch # PS30093. For an in-bed wiring harness use part # 50-97-410. Sidewinders are selected based on the specific OEM pin box model on the trailer. The...
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  • How to Determine if a Sidewinder Will Fit a Zieman Pin Box on a 2006 Weekend Warrior
  • Since the available Sidewinders do not specify a Zieman pin box, you will need to take some measurements of the pin box to determine if any of the Sidewinders will fit. I have included a link to a help article that shows the measurements needed. With that information I should be able to determine if there is a Sidewinder that will work.
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  • How to Identify Unknown Fifth Wheel Pin Box
  • The manufacturer and model number of the pin box is usually printed on a sticker or stamped into a plate or directly into the metal of the pin box. If you can't find that, the manufacturer of your 5th wheel should be able to tell you which pin box you have if you provide them with the VIN. If you can't reach the manufacturer or they can't help for some reason, take a look at the FAQ article I've linked you to. The article shows you how to measure the spacing of the bolt holes in...
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  • Can a Sidewinder Replacement Pin Box Be Used with a Curt X5 5th Wheel To Gooseneck Adapter
  • The Sidewinder pin boxes are not permitted for use with any sort of 5th wheel to gooseneck adapter. The issue is that the X5 adapter is really only secured in the center gooseneck hole. Since the Sidewinder locks out pivot at the 5th wheel hitch and moves the pivot point back, it would be creating overwhelming torque and stress on the adapter and gooseneck installation kit below the truck bed. This could damage it badly and you would not be able to use the gooseneck hitch any more. It also...
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  • Weight of Reese Sidewinder with Rotating Turret # RP61420
  • The Reese Sidewinder 5th Wheel King Pin with Rotating Turret # RP61420 referenced in your question weighs 143 pounds. It has an actual towing weight capacity of 16,000 pounds. This Sidewinder King Pin, which will move the trailer's pivot point an extra 22 inches toward the rear of your truck, is designed for use with the Fabex 663 and 665, Lippert 0719 and 1621, and the M&M 663 and 665 pin boxes. I have attached a couple short video demonstrations on this product that you can also take...
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  • Recommended Fifth Wheel And Sidewinder King Pin For Ford F-150
  • All the parts in the picture are compatible with each other. The Sidewinder Wedge Kit # 30850 is compatible with # PS30093 as it's a Pro Series 16K manufactured after 2009. Since the Pro Series fifth wheel hitch # PS30093 has the slide bar jaw it requires use of Sidewinder Wedge Kit for Pro Series # 30850 to work with Sidewinder 5th Wheel King Pin # RP61420. The rails and install kit # RP30035-31 are compatible with Pro Series 5th Wheel Trailer Hitch # PS30093.
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Info for this part was:

Expert Research:
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Mike L
Expert Research:
Robert G
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Michael H
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Jeff D
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Jameson C
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Video Edited:
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Written by:
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Updated by:
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Updated by:
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Updated by:
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Test Fit:
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