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Expert Answers about GMC King Pin Locks


  • King Pin Coupler Lock For A 3" Diameter King Pin
  • The Ultra-Fab 5th Wheel King Pin Lock # UF48-979008 might be just what you're looking for. It has a 3-1/4" diameter and uses a padlock to secure the king pin. If you could provide a picture and some dimensions on your king pin I'd be happy to take another look and see if there's something a bit more specific for your setup.
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  • Will the AMPLock King Pin Lock Work With a Nylon Lube Plate
  • Yes, the AMPLock King Pin Lock for 5th Wheel Trailers # AMP77FR will work with a nylon lube plate. The only reason this wouldn't work is if there was any adapters installed.
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  • Can the Fixed Curt A20 Hitch Be Used in a Ford F-350 with a 6'9" Bed
  • With the additional length in the bed of your 2022 Ford F-350 and the tapered nose of the Momentum 351M, you will more than likely be ok to use the Curt A20 5th Wheel Trailer Hitch with Ford OEM Legs # C16034 in your truck. There is a way to figure out the clearance you have when your 5th wheel has a tapered nose. I have included the steps to do that below. 1: Go to the far edge of your trailer nose, about 1 foot up to allow for the curvature of the nose you will place a piece of tape...
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  • Recommended 5th Wheel Hitch And Pin Box For A 2017 GMC Sierra 1500 Denali 5.5' Bed MagneRide
  • Since your 2017 GMC Sierra 1500 Denali with MagneRide suspension has a 5-1/2' bed you'll have to use a sidewinder pin box to help prevent the nose of your 5th wheel from coming into contact with the cab of your truck. Pin boxes have specific bolt patterns so you'll have to know what model pin box your 5th wheel currently has on it. For example, the Reese # RP34FR will fit a Lippert 1621 pin box bolt pattern. Because of your MagneRide suspension there is only one option for the rails and...
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  • Can Demco Hijacker Autoslide Fifth Wheel Hitch Work with Lippert Cushioned Pin Box
  • Hey Diane, so the Demco Autoslide part # DM8550024 that fits the OEM pucks of your 2017 Ford F-250 can be used with the Lippert cushioned pin boxes like what you have installed on your 5th wheel.
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  • Does The King Pin Need To Be Greased When Using A Demco Autoslide 5th Wheel Hitch
  • Hey Perry, The king pin can be greased but I recommend only using a white lithium grease # L11354 to avoid attracting dirt/debris that could gum up the jaws of your Demco Autoslide # DM8550024. This hitch has multiple points to grease so I recommend checking out the manual and following their instructions to properly grease the hitch to keep it gliding smoothly. Since this hitch prevents movement of the king pin in the jaws of the hitch greasing it would really only help protect the metal...
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  • Will The Demco Recon With Slider Work With A Curt Turning Point Pin Box
  • The Demco Recon 5th Wheel Hitch w/ Slider # DM57YV has a sliding function so you would not want to use this in conjunction with the pivoting function of the Curt Turning Point. If you lock out the pin box by inserting the two bolts in the back and transition it back to a standard pin box then you could use the slider function on the # DM57YV. The # DM57YV only gives you 14" of turning clearance, whereas the Curt Turning Point will give you 22" so I highly recommend not going with the...
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  • Can A MORryde Cushioned Pin Box Be Used With A PullRite SuperGlide 5th Wheel Hitch
  • If you're asking if the MORryde Cushioned 5th Wheel Pin Box # MR84VR would be compatible with a PullRite SuperGlide 5th wheel hitch you'll just need the correct adapter # MR57ZR. This adapter replaces the plate currently on the pin box with one that has a built in wedge so that you can lock the king pin into the jaws of the hitch. If you're wanting to replace your current pin box with the # MR84VR then you'll first want to determine the bolt pattern and GVWR. You can find the GVWR on...
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  • How to Reduce Chucking w/ a Reese Revolution Pin Box
  • It's the 5th wheel hitch that is responsible for chucking. A looser fitting jaw to the king pin of the pin box is the number one reason for chucking. There's not much you can do to the pin box, especially if you're wanting to keep the Reese Revolution or a comparable rotating pin box. I recommend replacing your 5th wheel hitch with one that has a 360 degree jaw to kingpin contact. If you are using a set of 5th wheel rails in your 2017 F-250, the B&W Patriot 5th Wheel Trailer Hitch item...
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  • Recommended 5th Wheel Hitch For A 2021 Ram 2500 With Puck System And Turning Point Pin Box
  • Because your trailer has a Turning Point pin box and your Ram has a 6.5' bed I do recommend going with a fixed hitch and using the Turning Point as a rotating pin box to give yourself enough turning clearance. With you also having a puck system the best option is going to be the B&W Companion OEM 5th Wheel Hitch for Ram Towing Prep Package # BWRVK3600. It's a bit overkill in terms of capacity but it won't require an additional adapter to connect to the pucks . B&W is known for their quality...
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  • Recommended Towing Setup for a 2009 Ford F-150 Flareside Pulling a 5th Wheel Trailer
  • The only solution that you really have that will accommodate the narrow box on your 2009 Ford F-150 is changing out your current pin box for a Sidewinder. A Sidewinder pin box rotates at the turret instead of where the king pin is. This gives you an additional 22 inches of turning clearance and will keep the pin box from possibly hitting the side of your truck bed. The Sidewinder pin box actually has the option to come with an air bag to help make the ride more smooth. Most likely you...
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  • Recommended Sidewinder Pin Box
  • I was not able to find anything on the 5A516K part number you mentioned. We have the Reese Sidewinder 5th Wheel King Pin with Rotating Turret item # RP34FR which fits the following pin boxes: Fabex 663 Fabex 665 Lippert 0719 Lippert 1621 Lippert 1621HD M and M 663 M and M 665 If you could email me a picture of the sticker on your Keystone Cougar's pin box I would be happy to give Lippert a call and confirm which pin box you have and recommend the correct Sidewinder you will need.
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  • Best Air Ride Pin Box Replacement for the Reese Revolution on Rockwood Signature Ultra-Lite Trailer
  • Your Rockwood Signature Ultra-Light with Reese Revolution Kingpin is compatible with the air ride replacement 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs # RP61422. This will give you the same turning function but will help with the shock absorption you are seeking for a smoother ride. If you prefer a fixed king pin, you can instead use the Trailair Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs # LC328492 which won't provide the additional...
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  • Will Hi-Rise Gooseneck-to-5th-Wheel Trailer Hitch Adapter Work With Above-Bed Gooseneck Hitch
  • There is a solution for you to use a gooseneck-to-5th wheel adapter, but the Hi-Rise Gooseneck-to-5th-Wheel Trailer Hitch Adapter is only designed to be used with an underbed gooseneck hitch. Due to that I recommend the Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter # DM8550045 which only requires you to have a 2-5/16" gooseneck ball, which it will install on. The Recon has a 21,000 lb capacity, is lightweight which makes it very easy to handle and uses a single-piece jaw with...
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  • Recommended Sliding 5th Wheel Hitch for a 2017 Ford F-350 with Factory Puck System
  • The best sliding 5th wheel hitch that we have to offer is the Demco Hijacker Autosliding 5th wheel hitch. It is compatible with the puck system on your 2017 Ford F-350 Super Duty and keeps you from having to keep getting in and out of your truck to disengage and engage the sliding feature on a regular sliding hitch. It also features a cushioned hitch head with a 4-point pivot, and a wraparound jar that gives 360-degree contact with the king pin and is secured by a 3/4 inch locking steel...
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  • Would A Sliding Fifth Wheel Hitch Or Rotating Pin Box Be Better For A 2021 Ram 2500 6-1/2' Bed
  • Hey Connor, A typical sliding 5th wheel hitch is going to give you 12-14" of travel for extra turning clearance while a rotating pin box like the Reese Sidewinder will move the pivot point of the trailer back 22". Rotating pin boxes give you the best chance of making a 90 degree turn without the nose of the trailer hitting the cab of the truck. With a rotating pin box you won't have to get out of the truck at each tight turn to move the hitch into the maneuvering position and then again...
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  • Capture Plates Needed For A Road Armor Pin Box And Demco Autoslide 5th Wheel Hitch
  • Hey Nathen, The Road Armor pin box has the same pivoting design as the Rota-Flex and would need the Demco Autoslide Capture Plate # DM6171 in order to be compatible with your Demco Autoslide 5th wheel hitch.
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  • Recommended Replacement Gen-Y Pin Box for a Lippert 1621 HD Pin Box
  • Hey Ronald, I went ahead and cross-referenced with Lippert and it looks like you have a 1621HD pin box so the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box # GY46FR will work as a replacement.
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  • Is The Convert-A-Ball 5th-Wheel-to-Gooseneck Adapter Compatible With Rota-Flex Pin Box?
  • The Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter # CAB-C5G is not compatible with any cushioned style pin box. You would need to switch to a pin box like the Reese Goose Box # RP85FR. If you can provide me with the frame tag information from LCI I can verify if this is the correct pin box or if you have other options to haul your 5th wheel with a gooseneck ball. The frame tag will have a serial number, LCI item number and chassis MFG date.
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  • Why Can't the Curt Rota-Flex Pin Boxes Be Used with the Curt Q-Series 5th Wheel Hitches
  • Hey Derek, thanks for reaching out! The Curt Rota-Flex pin boxes, like part # LC176440 you referenced, aren't compatible with the Curt Q-Series hitches because the pin box hitch plate moves and the Q-Series hitches use a spherical axial bearing which provides a smooth ride quality for standard pin boxes, but will work against the movement of the Rota-Flex pin boxes. Instead of the Q-Series I recommend using the A-Sers # C16140 which is pretty similar, but it has a torsion head so it will...
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