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Fifth Wheel King Pin > Standard > Sidewinder > Fabex, Lippert, M and M > 663, 665, 0719 > 16000 lbs GTW > Reese

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

Reese Fifth Wheel King Pin

Code:   RP61420



Shipping Special

Shipping Weight: 143 pounds


Reese Fifth Wheel King Pin - RP61420

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.


  • 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
  • Made in USA


  • 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


(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 Q5 5th-wheel trailer hitch
  • PullRite SuperGlide 5th-wheel trailer hitch
  • Reese Trail Boss 5th-wheel trailer hitch
  • B&W 5th-wheel trailer hitch
  • 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

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 install reese 5th wheel sidewinder rp61420
Reese Sidewinder with Rotating Turret Installation
Video Demo Reese Fifth Wheel King Pin RP61420
Reese Fifth Wheel King Pin RP61420 Review

Video Transcript for Reese Sidewinder with Rotating Turret Installation

Today on this fifth wheel camper, we'll be removing the old pin box and installing a new turret and Sidewinder from Reese, product number RP61420. As we said earlier, before we can install our new turret, we have to remove the old pin box. To do that, we'll remove these four bolts on both sides. However, we also have to remove this breakaway switch and trailer wiring before we can remove the pin box. Bolts simply unscrew from their current positions. With all of our electrical components removed, we can remove our four fasteners.

As you can see, we've already removed two fasteners for now. We're going to use a pallet and a fork truck to take it away from the pin box so it's safer to remove the final fasteners. In this case, we'll be using a pry bar to help with the removing of the pin box. With that removed, we will lower the pallet and proceed to assembling the turret. First thing to do is remove the wedge from the bottom of the Sidewinder.

It will line up here with the king pin where we'll tighten it down into position later so there will be no lateral movement with our Sidewinder. Before we set up the turret into the Sidewinder, we're going to take some of the white lithium grease or a spray lubricant. Just hit the top of the Sidewinder just to make it easier to slide our turret on. Once that's in place, we'll install the plastic disc, then well set our top plate and bolt it on. We'll be installing the four 5/8 bolts and lock washers.

With all fasteners installed finger tight, I'm going to use a ratchet to tighten them down, then I'll torque them to specifications as indicated in the instructions. Now that all components are properly installed we can install the turret and Sidewinder into our camper using out truck and pallet. To install the turret, we'll be using these bolts with the flat washers on the outside and the conical tooth washer and nut on the inside. Once those are in place, we'll tighten them down. We will lower the pallet, then torque the specifications.

Next, we'll reinstall our electrical box and breakaway switch. Now that the Sidewinder is installed, the next thing we need to do is hook up the truck to the camper and tighten our wedge near the king pin. We have the wedge tight enough so that it cannot be moved by hand but we'll still be able to use a mallet. Now, we'll back up our vehicle into place and lock down the king pin. We will have to take a mallet to knock the wedge into position. We'll first snug down the bolt we can reach that will hold the wedge in position, while we pull the truck away and tighten down the other bolt. Now, we can torque the bolts to specifications. With that, our Sidewinder is ready to go. We'll hook the truck back up and take it for a test spin to see how it works. As you can see, when it turns, the turret is doing all the turning while the Sidewinder stays in a stationary position due to the wedge. And there you have it for the Reese Turret and Sidewinder installed on our 5th Wheel camper, product number RP61420.

Ask the Experts about this Reese Fifth Wheel King Pin
Expert Answers about Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs - RP61420                                           Do you have a question about this Fifth Wheel King Pin?

  • Sidewinder Fifth Wheel King Pin with Rotating Turret, part RP61420 for Fabex model 663
  • Yes, the Sidewinder Fifth Wheel King Pin with Rotating Turret by 5th Airborne, 16K, code # RP61420, is the replacement for your Fabex model number 663, 15k king pin box. The sidewinder design allows you to make up to 90-degree turns without getting out of the truck or throwing a switch, and easily hooks up and disconnects. I have included a link to the installation details and a link to a Sidewinder FAQ article for you.
    view full answer...

  • Replacement Rotating Turret for a 5th Airborne Sidewinder from Lippert Pin Box to Leland Pin Box
  • You will need the Sidewinder Rotating Turret Premium Pin Box Coupler, item # ST400, to switch the Lippert rotating turret to a Leland rotating turret on your 5th Airborne Air-Ride Sidewinder. You can review the conversion table (see link) to see the parts for both Leland and Lippert pin boxes.
    view full answer...

  • Is Sidewinder Needed to Tow Fifth Wheel Trailer With 2010 Toyota Tundra Crew Max With 5.5 Foot Bed
  • Since the truck bed is less than 6 feet on your 2010 Toyota Tundra Crew Max 5.5 foot bed, you will need to use a standard fixed fifth wheel hitch and a Sidewinder to give you the necessary clearance between your vehicle and trailer. I am including a link to a FAQ page on information for fitting a Sidewinder to your truck and the clearance formula you can use to determine if it will work with your fifth wheel trailer. To determine the correct Sidewinder for your Toyota Tundra depends on the m
    view full answer...

  • Should a Reese Sidewinder Arm be Level Once Installed on a Trailer
  • You would want the arm on a Sidewinder, # RP61420 to be level to that the trailer is towed level. The first thing I would do is go back and make sure that the arm is connected to the turret and torqued down according to the specs in the instructions linked for reference. I did speak with my contact at Reese and he stated that if it is off level by a few degrees that it will not be a problem, especially if the factory pin box was off level. He also stated that you should not elongate any holes
    view full answer...

  • Reese Hitch Recommendation for a 2007 Toyota Tundra 5.5 Bed Towing a Open Range Light Trailer
  • I did a little research on the pin box that is on the Open Range Lite fifth wheel and it does look like you could tow one of their trailers with your 2007 Toyota Tundra with a short bed. For a hitch for your 2007 Toyota Tundra with a 5.5 ft bed I would recommend you get a Reese 5th Wheel Trailer Hitch # RP30047 and Reese Rail Kit # RP30035-309. This hitch provides excellent jaw-to-king-pin contact with a 2 jaw latching system. If you were to ever try and tow a different trailer you will ne
    view full answer...

  • Sidewinder w 5th Airborne Recommend to Reduce Chucking Allow Short Bed Truck to Make 90 Degree Turn
  • There are Sidewinders that do have 5th Airbornes built into them, and yes they would give a short bed truck the ability to make a 90 degree turn and it would reduce chucking. I attached a page that shows all of the different model Sidewinders we offer with a 5th Airborne. Check out the FAQ I attached on Sidewinders if you want to see which model would work with the pin box you have on your trailer. Sidewinders are pin box specific and you would need to find out which pin box you have and then
    view full answer...

  • Differences Between a Reese Sidewinder and Revolution on a 5th Wheel Trailer and 2012 Ford F-150
  • A Sidewinder and a Revolution are the same thing. It is called a Revolution when it comes as OEM equipment on a trailer. That is the only difference. To determine if the Revolution offers enough extra clearance for your truck and trailer, there are some measurements to look at. First, measure from the center of the hitch jaws to the back of the truck cab and add 22 inches (length of Revolution extension). Then, measure the width of the trailer overhang and divide by 2 to get half. If the
    view full answer...

  • How to Determine What Pin Box is on a 5th Wheel Trailer for Picking out a Sidewinder
  • There should be a sticker or a stamping on the OEM pin box of the 2003 Fleetwood Prowler 275 CKS that will list the number pin box 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 you have you can check the FAQ I attached that has a chart that shows the correct Sidewinder to get based on which pi
    view full answer...

  • Can a Sidewinder With Rotating Turret be Used with a Gooseneck Trailer Hitch Ball.
  • A Sidewinder like # RP61420 cannot be adapted to work with a gooseneck trailer hitch ball. What you would need to use is a Goose Box like # RP94622 for Lippert 0719, 1621 and 1621HD or Fabex PB-600 Series pin boxes. Or, we have # RP94622-61301 for Lippert 0115, 1116 and 1716 pin boxes. We have other adapters for towing a 5th wheel trailer with a gooseneck hitch. I have included a link to an FAQ article that covers the options. You can also try a taller ball and lower the pin box or coupler
    view full answer...

  • Can a 2010 Toyota Tundra Crew Max with 5-1/2 Foot Bed Tow a 96 Inch Wide Flagstaff 5th Wheel Trailer
  • I did some rough calculations and based on what I have found I do not think you will be able to tow a 96 inch wide trailer even with a Sidewinder. However, you will want to take some measurements yourself just to be sure. Find the center line of the rear axle and then measure forward 3-1/2 inches. From that point measure to the back of the truck cab. Then add 22 inches for the clearance provided by the Sidewinder. That measurement will have to be at least 52 inches or more for you to safely m
    view full answer...

  • 5th Wheel Installation Kit and Hitch Recommendation for a 2010 Toyota Tundra with 5-1/2 Foot Bed
  • Starting with the truck, we do have a semi-custom fifth wheel rail installation kit, # RP30035-309, but this kit is designed to fit the universal installation kit to your 2010 Tundra with a 5-1/2 foot bed and will still require drilling to install the frame brackets. There is not a full custom install kit available for your truck at this time. I attached links to the instructions for the semi-custom kit for you to review. When selecting a fifth-wheel hitch for your truck bed you will need to
    view full answer...

  • Can a Sidewinder Pin Box be Used with a 2012 Chevrolet Silverado Crew Cab Short Bed
  • It is actually required that you use a sidewinder pin box on your fifth wheel trailer if your truck has a bed shorter than 6 feet like your 2012 Chevrolet Silverado Crew Cab because a sidewinder pin box provides the most possible clearance to safely execute sharp turns. To use the sidewinder with your truck you would just need to add a fixed fifth wheel hitch, base rails and brackets. Since you have a 5 foot 8 inch bed, I assume you have a 1500 Crew Cab model. If you do not already have a fi
    view full answer...

  • Is a Reese Revolution or Sidewinder Compatible with a Curt E5 5th Wheel Trailer Hitch
  • There are certain 5th wheel hitches that are not compatible with the Revolution or Sidewinder. The Curt E5 will not be a problem but you will have to keep the hitch locked in the towing position and never slide it back. Doing so will put incredible stress on the trailer and hitch and can cause a lot of damage and it will put the king pin behind the truck axle. This will lighten the front end, maybe enough to adversely affect steering and braking response. If the trailer already has a Sidewind
    view full answer...

  • Recommended 5th Hitch and Pin Box for Towing Jayco Eagle with 2008 Silverado 2500HD Short Bed
  • I will assume that your 2008 Silverado 2500HD has the 6-1/2 foot bed. The pin box of a fifth wheel trailer is the extension that comes off of the underside of the trailer loft. The king pin that locks into the jaws of the fifth wheel hitch extends from the bottom of the pin box. I have edited a photo for you showing these parts. For a 6-1/2 foot bed, we typically recommend using a sliding fifth wheel hitch to provide the proper clearance between the front of the trailer loft and the rear o
    view full answer...

  • Can a 5th Wheel Trailer Hitch be Centered Behind the Rear Axle on a Truck
  • The dealer made a mistake, the center of the king pin should be either directly above the center of the rear axle or forward of the rear axle. The problem that you will run into is that when you have the pin weight behind the rear axle it will raise the front of the truck. This will have a negative impact on steering, braking, the head lights will point up. Also, the truck can carry the most weight directly above the rear axle. It cannot carry what it is capable of if the weight is centered behi
    view full answer...

  • 5th Wheel Hitch and Rail Kit Recommendation for a 2004 Chevy Silverado 2500HD Short Bed
  • As long as the bed in your truck is longer than 6 feet you could get away with using a slider hitch. If your bed is shorter than 6 feet you will need to go with a Sidewinder to give you the necessary clearance to make tight turns. I did some searching and found that the short bed 04 Silverado 2500HDs have 6-1/2 foot beds so you should be fine to use a slider. For a slider hitch with more than enough capacity for your trailer that ha a 15k dry weight I would recommend the Pro Series 5th Whe
    view full answer...

  • Sidewinder Needed to Tow Fifth Wheel with Ford F150 Super Crew with 5.5 Foot Bed
  • The Sidewinder is pin box-specific, not vehicle specific so in order to determine which is needed we will need to know the manufacturer and model number of the OE pin box on your fifth wheel. This information is typically found on a sticker or plate somewhere on the pin box. If you cannot find that information, the manufacturer can usually provide it if you provide them with the VIN of your fifth wheel. You can also take some measurements from your existing pin box as shown in the FAQ article I
    view full answer...

  • Recommendation For What 5th Wheel/Sidewinder Combination Will Fit 2012 Dodge Ram 1500 5-1/2ft Bed
  • Because your 2012 Dodge Ram has a 5-1/2 ft bed, in order to tow a camper you will need to have a 5th wheel hitch as well as a sidewinder installed. A sliding 5th wheel hitch has a 12 inch clearance when in the tow position and can interfere with your tailgate. The sidewinder has a 22 inch clearance when in the tow position and when used in combination with a stationary 5th wheel hitch will not interfere with your tailgate and will enable you to make sharp turns. The formula to calculate thi
    view full answer...

  • What is Required Lubrication and Maintenance of Reese Revolution Sidewinder Pin Box # RP61420
  • My research on the Forest River website shows that their Rockwood Series of 5th wheel trailers currently comes equipped with a Reese Revolution hitch. The gross weights (GVWR) of the various Rockwood-series trailers varies considerably across models from a low of 7850-lbs for their 8244WS to a high of 9350-lbs for their 8289WS but my contact at Reese advised that the routine maintenance recommended in their instruction manual (which is attached for your review) are consistent across their dif
    view full answer...

  • Sidewinder Pin Box for 5th Wheel Trailer with Lippert 1621HD Pin Box and 2013 Ram 2500 Mega Cab
  • Yes, you can use a Sidewinder with your Reese slider hitch on your 2013 Ram 2500 Mega Cab. But you will need to leave the hitch locked in the tow position at all times and not slide it back while the trailer is attached. Doing so puts too much stress on the system. Also, you mentioned having an Elite Series 16k hitch but the Elite Series did not come in a 16K. There is an 18K model, # RP30144. If the trailer also weighs 18K then I strongly recommend switch to the higher capacity Elite Series
    view full answer...

Info for this part was:

Expert Research:
Michael L

Video Edited:
Zack K

Written by:
Lindsey S

Expert Research:
Robert G

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Jameson C

Expert Research:
John H

Expert Research:
Adam R

Photos by:
Jim W

Expert Research:
Lori W

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