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  1. Fifth Wheel King Pin
  2. Reese
  3. Lippert 0115
  4. Lippert 1116
  5. Lippert 1716
  6. 20000 lbs GTW
Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 and 0115 - 20,000 lbs

Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 and 0115 - 20,000 lbs

Item # RP77FR
Our Price: $1,515.43
Fifth Wheel King Pin
Shipping Weight: 217 lbs
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Make tight 90-degree turns with your short-bed pickup while towing your fifth-wheel trailer using this extended pin box. The pivoting action lets your trailer turn and clear the cab so you don't have to exit your truck to adjust when turning. 1-800-940-8924 to order Reese fifth wheel king pin part number RP77FR or order online at Free expert support on all Reese products. Great prices and Fastest Shipping for Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 and 0115 - 20,000 lbs. Fifth Wheel King Pin reviews from real customers.
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  • Reviews (25)
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Reese Fifth Wheel King Pin - RP77FR

  • Lippert 0115
  • Lippert 1116
  • Lippert 1716
  • 20000 lbs GTW
  • Upgraded Pin Box
  • Reese
  • Provides Turning Clearance
  • Rotating Turret

Make tight 90-degree turns with your short-bed pickup while towing your fifth-wheel trailer using this extended pin box. The pivoting action lets your trailer turn and clear the cab so you don't have to exit your truck to adjust when turning.


  • 5th-Wheel pin box lets you make tight turns while towing your trailer, even in your short-bed pickup
    • No need to get out of your truck to adjust a 5th-wheel slider
  • Rotating turret acts as new pivot point, letting you clear your truck's cab while turning
    • Pivot point is moved 22" towards the rear, offering plenty of clearance while still keeping your load safely in front of the rear axle
  • Easy hookup and disconnect - king pin slides into your 5th-wheel trailer hitch from almost any angle
  • Locking wedge prevents king pin from rotating inside your Reese or Pro Series 5th-wheel hitch
    • Some other 5th-wheel hitches may require custom wedge (sold separately)
  • Simple to maintain - just lubricate king pin, screw, and pivoting shaft
  • Bolt-on installation - replaces your existing 5th-wheel pin box
    • A 1-1/8" socket and wrench are needed for proper installation


  • Designed to replace the following pin boxes:
    • Lippert 0115, 1116, and 1716 models
    • Fabex 500 Series and 700 Series
    • RBW 7019 and 70208 models
  • Weight capacity: 20,000 lbs
  • Maximum pin weight: 5,000 lbs
  • Clearance: see formula below to ensure proper clearance
  • Limited lifetime 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 fifth-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 20,000-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


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

The Sidewinder Design

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 fifth-wheel hitch.
  4. The king pin connects to the fifth-wheel trailer hitch in your truck bed.
  5. The arm is rated at 20,000 lbs.

Get 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" away from the cab.

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

68220 Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs

68200 Spacer Kit for 20,000 lb Sidewinder Kingpins - Wide Trailer Wingset

68202 Sidewinder Wedge Kit for 20K Reese ELITE, M-Series, or ProSeries Fifth Wheel Trailer Hitches

Installation Details RP77FR Installation instructionsAlternate Instructions RP77FR Installation instructions

Customer Satisfaction Score:

Customer Reviews

Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 and 0115 - 20,000 lbs - RP77FR

Average Customer Rating:  4.9 out of 5 stars   (25 Customer Reviews)

Make tight 90-degree turns with your short-bed pickup while towing your fifth-wheel trailer using this extended pin box. The pivoting action lets your trailer turn and clear the cab so you don't have to exit your truck to adjust when turning.


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.


I'm an absolute green horn, jumping in big time with a 45' Momentum and desired RAM 3500 HO Mega cab. After extensive research, I was glad to find validation here for an "ultimate short bed solution" with the Sidewinder cushioned on a BD5 Trailer.
My only other consideration at this point would be the Reese goose ball.
It may not offer quite as much turning angle or cushioning, but has the bed space advantage. Thank you!


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


I am using this pinbox with a 6.6' bed on my Ram with Ramboxes. My old pinbox would hit the sides and limit my turning ability. This was an awesome solution, very happy.





My only regret with this kingpin is not switching to it sooner. I recently changed up my entire set up to this kingpin and a Hensley BD5 Trailer Saver hitch, for my 41ft Jayco Seismic Wave. If you use a slider hitch, whether auto or manual, you know there's a significant lag in response from the trailer when turning and backing. This kingpin eliminates that lag time. My hitch/kingpin combo is a pricey upgrade, but if you tow often then it will be money we'll spent.


I needed the sidewinder hitch due to transferring from a standard bed truck to a short bed. I installed it my self and the setup was very easy. It works just as it should!


I drive a RAM 2500 shortbox diesel with the Rambox feature that I really like. It also had the factory puck system in the bed. But when I found the 5th wheel I wanted i soon realized that the stock Lippert pin box would not work with my truck. I wanted to use the Curt A20 hitch that I already had but assumed that I would need to replace that for a sliding hitch. When I discussed my issues with the etrailer support tech he told me about this Reese sidewinder and all the reasons it would work with my truck where nothing else would. He was spot on with his advice. I've now had the Reese for a year and have been out many times without issue. I can even make 90° turns and the trailer cap doesn't even come close to the truck cab. I can even open the Rambox most of the way with the trailer mounted. I'm very happy with the product. This hitching stuff can be complicated and risky and I'm glad I talked to the support team before I may have made a stupid mistake.


I don't always need a hose support system but when I do I use this. Yes it's light plastic so careful. Used about 4 times and nothing has broken.


Nice to be able to stretch it out a long way if you need it to.


The A team!
E trailer and camco sewer
hose support system is excellent
Nice compact storage good quality.
Great customer service and quick shipping.


Needed a pin that would fit my short bed and Ram Boxes. After extensive research I coupled this along with the B&W patriot 18K hitch and I have full clearance on my trailer and cab. I now have an extra 22 inches that other hitches wouldn't and couldn't give me.


Excellent delivery and great pricing


it works great we used boards before purchasing the camco sidewinder RV sewer hose support system with storage handle.


Excellent product! Took seconds to set up and worked prefect! Unfolds easy , nice carring handle. I would highly recommend this. Price and shipping is great.


When we ordered the Yakima Sidewinder, we hadn't realized that the luggage rack on our new RAV4 was a newer style that did not fit the couplings included with the Sidewinder. We spoke with a rep at Yakima who helped us find a fix (a set of couplings that worked) and discounted the price to us. We have a tandem bike that is quite heavy. This product makes it possible for us get the bike on the top of the car (my wife has a bad back, so I need to do most of the heavy lifting myself) and go anywhere. The product feels good and solid, too. We're secure using it and driving all over the cities and rural areas near Minneapolis.


Having a Ram 3500 Megacab, short bed, I was terribly worried about hitting the cab with my Momentum toy hauler given it's 102" wide. My choice was slider or this Reese Sidewinder. I chose the Sidewinder and darn glad I did. It works as advertised and I can turn a full 90 degrees with about 5" of clearance between the cab and my front nose of the trailer. Some words of caution: this pin box is heavy! Get it professionally installed by your RV dealer. The wedges for your particular hitch will take some getting used too. Move wedge back to hitch, move forward to lock into place. Even still, I need to lay in the bed and have rigged up a heavy wire to assisting getting that wedge tight in the funnel. If you don't, the hitch will move on corners and you feel a big shift of weight.

Bottom line, I like it, it was the right decision for me and didn't take up any more payload than necessary unlike a heavy slider hitch. Recommended! And etrailer delivered on time as promised.


I purchased this just over one year ago and it has performed its mission flawlessly. I have moved my tandem multiple times and thousands of miles on a 2005 Chevrolet Uplander LT without incident. The bike is held securely at the front fork and the bottom (horizontal) tube between the bottom brackets. I was concerned initially, but this does hold the bike very securely. In my opinion, the biggest benefit of this design is the incredible ease of loading the bike. The front pivoting feature makes loading a tandem easier than loading any other bicycle on any other rack I have ever used. I can do it alone and my feet only need to leave the ground to attach the bottom tube restraints, much less than what I need to do when loading single bikes.


For those who are considering a “slide hitch” this is a better alternative. Rather than get into a bind and need to release the slide feature, the Sidewinder pin box pivots farther back than a typical pin box so it never puts your pickup in a compromising position. I purchased a 20k standard hitch to use in conjunction with the Sidewinder. I have no regrets and I highly recommend this pin box.


It is the best thing that a novice 5th wheel owner could ask for. Having to go get a class A license to pull my trailer, it made it easy for me to pass the test with litte 5th wheel experience but a lot of bumper tow experience. The mechanical aspect of this unit is what sold me. Few moving parts and no sliding components made me feel safe and confident while navigating my trailer in some difficult situations. And pulling a 19,000 pound trailer accross California's raods, you need all the confidence in your equipment you can get.


Got expert advice from David B. This arrived along with my Reese fifth wheel hitch and they work beautifully together to solve my problems with towing a fifth wheel with a ram that had a ram box. Giant pain in the butt but problem has been resolved thanks to y’all


The sidewinder works exactly as advertised, We installed this on our 41' Heartland Landmark 365 and the increase in manuverability is awesome.
The quality is top notch and I would recommend this product all day long.
I installed this myself and it bolted right into place with zero issues.
If your on the fence about purchasing this product I highly recommend pulling the trigger, you won't regret it...


Excellent product. Even after almost a year they are still in good shape. The carry handle is perfect once you figure out which side goes on first. That way you avoid breaking the handle.

Show More Reviews

See what our Experts say about this Reese Fifth Wheel King Pin

  • Is a Spacer kit Needed for Sidewinder to Replace Lippert 1716 Pin Box
    You do not need to purchase a spacer kit separately to use a Sidewinder when replacing your Lippert 1716 pin box. Reason for that is the spacer kit already comes with the Sidewinder. So all you need to purchase to replace your Lippert 1716 pin box is the following: - Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 and 0115 - 20,000 lbs # RP77FR
    view full answer...
  • Reese Sidewinder Replacement Compatibility For A Reese Sidewinder SW19KIN Pin Box
    Yes, the Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 - 20,000lbs Item # RP77FR will replace your previous Reese Sidewinder SW19KIN Pin Box.
    view full answer...
  • Can I Use a Reese Sidewinder w/ a Long Bed Truck?
    Yes, you can. The Reese Sidewinder 5th Wheel King Pin with Rotating Turret item # RP77FR will work with a long or short bed truck. This Sidewinder fits the Lippert 1716 and 0115 pin boxes.
    view full answer...
  • Is The Reese Sidewinder Compatible With Curt A16 5th Wheel Hitch
    Unfortunately, the Reese Sidewinder 5th Wheel King Pin with Rotating Turret # RP77FR you reference is not compatible with Lippert Rhinos.
    view full answer...
  • Should The Sidewinder Wedge Rotary Wheel Still Rotate While The Wedge Is Torqued Down
    The rotary wheel on your Reese Sidewinder 5th Wheel King Pin with Rotating Turret # RP77FR should still be loose enough to slide your wedge back and forth while it's torqued down. It sounds to me like you may have accidently over-torqued the bolts so I recommend checking the manual that came with your Sidewinder and ensuring that you're torqueing the bolts to the correct specifications.
    view full answer...
  • Recommended Sidewinder Pin Box For A Cedar Creek 5th Wheel Trailer
    Pin Boxes are bolt pattern specific so you would need to find out what kind of pin box is on the Cedar Creek 5th wheel you've been looking at. The Reese Sidewinder 5th Wheel King Pin with Rotating Turret # RP77FR you were looking at is designed to replace a Lippert 1716, 1116, and 0115 pin box. You'll also need to know the GVWR of the 5th wheel to ensure you get the correct GTW pin box. If you contact the dealer they should be able to tell you both the pin box design and GVWR and then we...
    view full answer...
  • Can Reese Sidewinder be Locked Out to Use as Standard King Pin
    Yes, if you lock out the Reese Sidewinder # RP77FR it will be a standard king pin and you can use it with the Andersen.
    view full answer...
  • Finding The Correct Sidewinder Pin Box Replacement
    The best way to find which sidewinder pin box will fit your 2018 KZ Durando 1500 5th wheel trailer is to identify the bolt pattern of your current pin box and then you can use that pattern to find the correct replacement. Typically manufacturers will stamp or print a serial number or model number on the pin box but over time some get painted over and worn and become illegible. If this is the case for your pin box then you can follow the steps in the attached guide to determine your trailer's...
    view full answer...
  • Alternative to MORryde Orbital and U-Tun Pin Boxes
    Thank you for reaching out! The MORryde Orbital and U-Turn rotating pin boxes have been discontinued which is why you're having problems finding them anywhere. Even with this being the case, we still have some similar options from Reese that you can choose from with their Sidewinder Series. The 20K Sidewinder # RP34FR replaces the following pin boxes: - Fabex 663 and 665 - Lippert 0719, 1621 and 1621HD - M&M 663 and 665 The 20K Sidewinder # RP77FR replaces the following pin boxes: ...
    view full answer...
  • Replacing the Lippert 1621 Pin Box with Reese Sidewinder 5th Wheel King Pin with Rotating Turret
    There is a difference between the Reese Sidewinder, # RP34FR & # RP77FR with rotating turret, mounting and hardware provided, components are the same but these are specificaly designed to replace different pin box options. The Reese Sidewinder, # RP34FR is the correct item for replacement of the Lippert 1621 Pin box.
    view full answer...
  • Can Reese Sidewinder Replace Lippert Rota-Flex Pin Box
    You can absolutely remove your Rota-Flex pin box and replace it with a Reese Sidewinder without any issue. It will work superbly on your standard bed F-350 and allow you to go from a sliding hitch to a fixed hitch. The pros are the convenience the Sidewinder offers, being able to go to that lighter fixed hitch and not having to use the slider function of a hitch. The only con is the Sidewinder doesn't have the rubber compound in the front of the pin box to absorb as much road shock as...
    view full answer...
  • Reese Sidewinder 5th Wheel King Pin Turret Dimensions
    The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 - 20,000lbs # RP77FR turret has an outside edge to outside edge measurement of 11.875" and the included spacer kit has two spacers that are approximately 1/4" thick.
    view full answer...
  • Will The Reese Sidewinder Work With A Reese Sliding 5th Wheel Hitch
    Yes you can use the Reese 5th Wheel Trailer Hitch w/ Square Tube Slider # RP30051 with the Reese Sidewinder # RP77FR you mentioned. However, you will have to lock the hitch in the forward position to prevent the hitch from sliding. Additionally, the Reese # RP30051 will not work with trucks with beds shorter than 6 feet, or have a flareside/stepside bed.
    view full answer...
  • Option to Replace Lippert 1116 Pin Box For Turning Clearance
    There isn't anything longer so if you want to improve your turning clearance, what you'll need is a Sidewinder to replace your Lippert 111 pin box, with the correct fit being the following: - Reese Sidewinder 5th Wheel King Pin with Rotating Turret # RP77FR This will move the pivot point backwards 22 inches which gives you the needed clearance so your trailer doesn't smash into your truck window.
    view full answer...
  • How to Determine If a Sliding 5th Wheel Hitch Will Be Necessary for My Truck?
    Unfortunately, I can't tell you what that measurement is so you are going to have to either measure that yourself or get in touch with a dealer and they may be able to tell you. It sounds like you may be concerned with clearance when making a 90 degree turn so what I can do instead is give you the formula to determine if you're going to have any clearance issues. The formula is (A+B) - C, and to use it you're going to need to first get A which is the distance from the center of the...
    view full answer...
  • Sidewinder Pin Box that Can Replace Lippert 0719
    We do have a cushioned version of the Sidewinder pin box with the part # RP61422 which is a fit for the Lippert 0719 that you have but the kit you mentioned is not a fit. I attached a couple install videos for this for you to check out as well.
    view full answer...
  • Recommended Hitch Weight Class For A Keystone Montana HM130RE
    No, a 15,000lb rated fifth wheel hitch would not be enough for a 14,500lb trailer. Not only is that just too close without even packing your stuff in it, but also manufacturers recommend only utilizing 80-85% of the total weight capacity of your hitch and pin box for safety. At that size you'll need either an 18k or 20k rated fifth wheel hitch and pin box. Pin Boxes are bolt pattern specific so you would need to find out what kind of pin box is on the Keystone Montana HM130RE to know...
    view full answer...
  • How to Lock Out Reese Sidewinder Pin Box for a Long Truck Bed
    Yes, to lock out your Reese Sidewinder, like part # RP77FR, for use with a long bed truck you just need to remove the wedge and then install the bolts at the back end of the pin box to prevent it from rotating (see attached). This is the same case for all Sidewinder pin boxes. Once this is done the pin box will stay in a fixed position and will rotate at the king pin as opposed to the turret.
    view full answer...
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  • Is Mopar 20k Fifth Wheel Hitch Compatible with Reese Sidewinder Pin Box
    Since the Mopar 20k fifth wheel hitch is a rebranded Curt Q20 series hitch it is not compatible with the Sidewinders like the # RP77FR that you referenced. Instead, I recommend the Reese M5 5th Wheel Trailer Hitch for Ram Towing Prep Package - Single Jaw - 27,000 lbs # RP37FR along with the necessary Sidewinder Wedge # RP44FR.
    view full answer...
  • Reese Sidewinder for 2011 Keystone Cougar 325 SRX w/ 1621 Pin Box
    I contacted Lippert, with the information from the tag you provided they informed me you currently have a 1621 pin box. The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs. # RP34FR, would be the the needed replacement. Unless you want the 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs., # RP61422. Please note the attached product review and installation videos. Happy Camping.
    view full answer...
  • Which Sidewinder Will Replace Lippert 1116 Pin Box
    For replacing a Lippert 1116 pin box the correct 20k Sidewinder is the part # RP77FR. Then for the wedge for the pin box to fit the hitch you'd need the part # RP31016 and you'd be set.
    view full answer...
  • Recommended Rotating Turret Replacement Pin Box for Lippert 1116
    I have a solution for you, but the Reese Sidewinder 5th Wheel King Pin # RP34FR is not a fit for your Lippert 1116 model pin box. The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs # RP77FR is the correct replacement. You may also need spacer kit # RP97FR to ensure a snug fit.
    view full answer...
  • Sidewinder Pin Box Replacement for Lippert 1116 Pin Box for Use with Ram Truck with RamBoxes
    Thank you for all of the great info! For your application you're needing the Reese Sidewinder 5th Wheel King Pin with Rotating Turret # RP77FR which matches up to the bolt pattern for your Lippert 1116 pin box and is rated for 20K. The only other thing you need for this setup is the Wedge Kit # RP99FR designed specifically for this Sidewinder and a Pullrite hitch.
    view full answer...
  • Finding The Correct Sidewinder Pin Box Using The 5th Wheel Trailer Chassis Tag
    I spoke with Lippert and confirmed the bolt pattern of your pin box is a 1716, thanks to the chassis tag picture you sent in. Since we know the bolt pattern now we just need to match the weight capacity. You'll need to check the Gross Vehicle Weight Rating (GVWR) and ensure your under the specific capacity of the hitch. I've listed the options below in order of weight capacity for you to choose the correct pin box for your application. 5th Airborne Premium 5th Wheel Air Ride King Pin...
    view full answer...
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Info for this part was:

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Expert Research:
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Employee Kathleen M
Updated by:
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Employee Wilson B
Updated by:
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Employee Carrie F
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