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Expert Answers about Fifth Wheel King Pin


  • Comparing the 18K and 21K Lippert 1621 Flex Air 5th Wheel Pin Boxes
  • The Trailair Flex Air 5th Wheel Pin Box part # LC369535 which is rated for 21,000 lbs is constructed of a thicker metal and also has beefier welds when compared to the Trailair Flex Air 5th Wheel Pin Box part # LC328492 which is rated for 18,000 lbs. The air bag and shock that is used in each of them are the same. The thicker metal and welds are what gives the former a higher weight capacity. The best option for you would be the one that meets the GVWR of your trailer though you could go...
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  • Reese Sidewinder or 5th Airborne Sidewinder for Forest River Sabre 37FBT
  • Your Forest River Sabre 37FBT has a 1621 pin box, so you will want the 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000 lbs # RP61422 for an air ride option or the Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs # RP34FR.
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  • How to Determine Fifth Wheel Pin Box Model
  • If you are unable to contact your trailer's manufacturer with your VIN to find the factory pin box model number there are some steps you can take which will allow you to determine what pin box model you have so you can purchase a new FlexAir. To do this you will need to follow the steps in the linked help article, which I will go over with you. Start by selecting your pin box style like in the accompanying photo (which you will also find in the help article). You will then need to use...
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  • Does Reese Goose Box Move Trailer Closer to Truck
  • A Reese Goose Box is not going to move your trailer closer to your Dodge Ram 2500. For example, as you can see by the accompanying photos the Reese Goose Box # RP94720 measures about 18-1/2 inches from the first bolt holes to the center where the ball attaches while the pin box it replaces, the Lippert 1621 # LC1191191 pin box it replaces measures a very similar 17-3/4 inches from the first bolt holes to the center of the king pin. To determine what the correct Reese Goose Box is for...
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  • Will the Reese Sidewinder 5th Wheel King Pin Work With a 2020 Ford F-150 5-1/2' Bed
  • Yes, the Reese Sidewinder 5th Wheel King Pins will work with a 2020 Ford F-150 with 5-1/2' bed. In fact, it is one of the only options which will allow for full ninety degree turns. Please note, in order to choose the correct one you need to know the pin box type (Lippert 1621, 1716, 1116, etc). If you have a 1621 then use part # RP34FR or if you have a 1716/1116 then use part # RP77FR. If you don't already have a 5th wheel hitch picked out, I recommend the B&W Patriot 5th Wheel Trailer...
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  • Is Trailair Air Ride Pin Box Compatible with Demco Hijacker Autoslide Hitch
  • Trailair Air Ride 5th Wheel Pin Box # LC158778 is fully compatible with Demco Hijacker hitches such as the 18K # DM8550034 and 21K # DM8550035 which fit short beds fitted with standard above-bed base rails like Demco kit # DM8552025-71. You'll also want to use the Demco Capture Plates for Trailair Pin boxes # DM6171. Pin box part # LC158778 is a correct fit to replace a Lippert 1621HD 5th wheel pin box. This direct replacement will bolt right up in place of the 1621HD and give a smoother...
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  • Can I Use the Mopar M20 5th Wheel Hitch with a Reese Sidewinder?
  • Unfortunately the Mopar M20 hitch you have is the same hitch as the Curt Q20 # C16130 hitch, which has a spherical axial bearing to improve the pivoting of the hitch head; because of this 360-degree pivot, it is not compatible with a pivoting pin box like the Reese Sidewinder # RP61421. It is not possible to lock out the head with any type of wedge, so there would be two pivot points in the towing setup, which would not work. Because of the shorter bed in your 2019 Ram 3500, you do need...
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  • Are Replacement Parts Available for the Trailair Air Ride 5th Wheel Pin Boxes
  • The reason that you cannot find the replacement shaft is because Lippert does not offer this separately. If the shaft is worn or damaged then it is time to replace the pin box. There are only very minimal replacement parts for these pin boxes (valve part # LC156740, shock part # LC177223, airbag part # LC432404) and this is intentional to discourage home repairs on such a critical component. That said, this might be a good to time to upgrade from the Trailair Air Ride 5th Wheel Pin...
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  • Replacing a SPB72-1621LD Pin Box with a Rota-Flex or a MORryde Pin Box with Chucking in Mind
  • If you're comparing the Tailair Rota-Flex that replaces a 1621 Lippert pin box, part # LC328330, with the MORryde equivalent (part # MR64VR for 5th-wheel trailers with up to 11,500-lb GVWR, and part # MR84VR for 5th-wheel trailers with 14,001 to 18,000-lb GVWR), then I recommend going with the Trailair. The Rota-Flex is built with chucking and road shock in mind, so it utilizes a pivoting head with a built-in rubber compound. The pivoting head allows for controlled movement of king pin...
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  • Replacement Trailair Flex Air Pin Box for 2021 Keystone Montana 3120RL
  • In order to choose the correct Trailair Flex Air pin box like the # LC328492, or any other pin box for that matter, is by checking the spec sticker on the current pin box for a model number. We don't have a database that tells us what pin box is on specific trailers, so you would need to either find the number on the sticker/plate or you can take some measurements of the bolt patterns to determine which one you've got. I've linked a brief article that explains this process. The Trailair...
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  • Cushioned Sidewinder Recommendation for Grand Design Solitude Fifth Wheel
  • The type of pin box that your Grand Design Solitude has is a Lippert 1621 so for a cushioned Sidewinder to allow the needed turning clearance since you have a fixed hitch you'd want the part # RP61422 and you'd be set.
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  • Trail Air Flex Air Replacement for Lippert 1621 OEM 5th Wheel Pin Box
  • The pin box shown in the photo you provided (thanks for that, by the way!) does indeed show a Lippert 1621 OEM pin box. The Lippert # LC369535 Flex Air you'd looked at is the correct replacement for a Lippert 1621 OEM pin box. However, since your OEM pin box only has a 15.5K capacity, there's really no reason to spend more for the 21K version. I'd recommend saving a few bucks and going with the 18K version, part # LC328492 which would still work perfectly for you. I've linked to a...
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  • Ride Quality Of Reese Goosebox Versus Lippert Trail Air Rota-Flex and B&W Companion 5th Wheel Hitch
  • Given the choice between the Reese Goose Box and the Trail Air Rotaflex like the # LC328330 you'd looked at, I'd recommend the Goose Box for better ride quality. The Rota-Flex offers a pivoting foot plate that provides resistance against chucking, but it lacks an airbag, so any bouncing the front end of your fifth wheel does will be transferred directly to the truck. The Goose Box features dual shock absorbers to prevent chucking as well as an adjustable air bag to absorb the shock from...
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  • Towing a 2018 Keystone Fuzion 424 Toy Hauler with a 2015 Ram 3500 Short Bed
  • Using a Reese Sidewinder with a B and W Companion hitch is the perfect setup for towing your 2018 Keystone Fuzion 424 Toy Hauler with your 2015 Ram 3500. Though you have a short bed (6-1/2 foot), I recommend the Companion without the sliding feature, part # BWRVK3600. The reason you can use this one is because the Sidewinder has enough clearance to make up for the hitch not sliding. I've included a link to a video installation of this hitch. If, however, you decide to go with a pin...
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  • How Important Is The Shock Line on the Trailair Flex Air 5th Wheel Pin Box
  • I spoke to my contact at Lippert about the issue you are having with the Trailair Flex Air 5th Wheel Pin Box like part # LC369535 on your 2011 Ford F-350. They stated that the arrow on the shock is just a reference point and not something that you should really use as your absolute guide as they have had issues with the sticker being misplaced. The reason that the ride is so rough is that you are at near max psi of the airbag which is 120 psi. They recommend that you adjust the pressure...
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  • Can Curt A16 Head Replace Curt M20 for 2017 Ram With Puck System, and Sidewinder for Lippert 1116
  • Okay, there's quite a bit to unpack here so to make things easier I am going to take your questions one at a time. 1) Your Ram OEM M20 hitch is the same as the Curt Q20 Curt Q20 5th Wheel Trailer Hitch # C16530-16021; it uses the same legs so you can replace the head with the Replacement Head Unit for Curt A20 # C16540 or the Replacement Head Unit for Curt A16 # C16520. 2) The Sidewinder Wedge Kit for Curt A16 Fifth Wheel Trailer Hitch # RP31016 is correct for the A16 or you can...
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  • Best 5th Wheel Hitch for Sidewinder on 2020 Ford F-350 Short Bed With Factory Prep Package Pucks
  • Let's go ahead and start with the best 5th wheel hitch for your 2020 Ford F-350 short bed with the factory prep package to use with a Sidewinder, which is the B&W Companion OEM 5th-Wheel Hitch for Ford Super Duty Prep Package # BWRVK3300. This hitch - which has a 20,000 lb capacity - is considered by most to be the best 5th wheel hitch on the market because of its immense jaws and cushioned bushings, which combine to give you the most comfortable and quiet towing experience possible....
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  • Recommended Air Ride Sidewinder Replacement For Lippert 1716 Pin Box
  • We do indeed offer an air-ride Sidewinder model that's a replacement for the Lippert 1716 pin box. I'd recommend part # RP77FR which would be compatible with the B&W Companion for Ford Pucks, like part # BWRVK3300. You'll also need a B&W specific wedge, part # SWW-06 to prevent the king pin from rotating in the hitch jaws. I've linked to some videos that you might find helpful.
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  • Which Trailair Rota-Flex Pin Box Compatible with Lippert 1621 Pin Box
  • I have a solution for you, but the Trailair Rota-Flex # LC176440 pin box is designed to replace 5th wheel trailers with a Lippert 1116 pin box and not the 1621 pin box. Instead, you'll want to use either the # LC328330 (trailer with GVWR of less than 18000-lbs) or the # LC328329 (trailer of GVWR less than 21000-lbs). The Trailair Rotaflex is a great solution to help reduce the bouncing and jarring that car be experienced with an uncushioned pin box and will be a great upgrade for your towing...
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  • Which Sidewinder is a Replacement for Lippert 1621 Pin Box with 15,500 lb Capacity
  • Thanks for that info! What you have is a Lippert 1621 pin box, and we do have two Sidewinders that will work as replacements for you. - Sidewinder 5th Wheel King Pin with Rotating Turret # RP34FR - 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret # RP61422 The latter will give you the same benefit as the standard Sidewinder in regards to turning radius, but the additional benefit of a much improved, smoother and more comfortable towing experience due to...
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  • Is Mopar M25 OEM 5th Wheel Hitch Compatible with the Sidewinder Rotating Pin
  • Thank you for the photo? I've managed to identify your pin box as a Lippert 1116. The hitch you have is a re-branded Curt Q25, which is unfortunately not compatible with the Sidewinder because the way the hitch head pivots would create too much instability. There are a couple of solutions. Once would be to replace your existing legs with # C16022 and a slider unit, part # C16570. This would eliminate the need for a Sidewinder. Another option would be to simply replace the existing...
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  • Recommended Gooseneck Adapter for 1621 Pin Box
  • Your 2012 Forest River XLR I believe has a 1621 pin box. You can confirm this by looking at the stickers on your current pin box or measuring the bolts as shown in the attached article. The Reese Goose Box Fifth-Wheel-to-Gooseneck Adapter # RP94720 is an air ride replacement rated for 20,000 lbs and would be my recommendation. Another option is the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Adapter Pin Box # 325-GH-8045 rated for 21,000 lbs. If you end up not having the...
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  • Replacement Shear Spring for MORryde Suspension Systems
  • It sounds like you might be looking for the Replacement #20 Rubber Shear Spring for MORryde Trailer and RV Suspension Systems # MR79UR, which is the replacement shear spring for an RS or LRE suspension. If you can specify which part you're seeking replacements for I can see if there are replacement parts available. I've also linked a review video of this part for you to check out as well.
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  • Is There an 18K Trailair Air Ride Pin Box for the Lippert 1621HD on a Forest River Vengeance 295A18
  • The Lippert 1621 and Lippert 1621HD Pin Boxes are very similar and can be used in place of one another if you drill out the lower front hole on each side of the trailer wings which is very easy to do. The difference between the two has to do with the mounting holes and weigh ratings. Therefore, if you do the above you can use the Trailair Flex Air 5th Wheel Pin Box part # LC328492 which is rated for 18,000 lbs or you can just use the Trailair Air Ride 5th Wheel Pin Box part # LC158778 as...
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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 # RP34FR. 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 to...
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  • Reese5th Wheel Hitch & Base Rails for 2019 Ford F-150 With 5-1/2 Foot Bed & Sidewinder
  • We do have a 5th wheel hitch and base rails that will work with a Sidewinder for your 2018 Ford F-150 with a 5-1/2 foot bed, though the part number you gave is just the head unit of a Reese Pro Series hitch, so you'll need the full set up. The parts you need are the following: - Reese 5th Wheel Trailer Hitch # RP30047 - Reese Semi-Custom Base Rail and Installation Kit for 5th Wheel Trailer Hitches - Ford F-150 # RP30035-31 - Sidewinder Custom Wedge # SWW-03 - Bargman 5th Wheel/Gooseneck...
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  • How To Tow a 5th Wheel Trailer With a 2020 Ram 1500 with RamBox
  • In order to tow a fifth wheel trailer using a 2020 Ram 1500 with RamBox you'll indeed need to use a rotating pin box like the Reese Sidewinder which will be specific to the trailer. If the trailer uses a Lippert 1621 then the correct Reese Sidewinder 5th Wheel King Pin with Rotating Turret is part # RP34FR. Then, you can complete the setup with the Reese Quick-Install Custom Outboard Installation Kit part # RP56018-53 and Reese 5th Wheel Trailer Hitch part # RP30047. The Sidewinder Wedge...
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  • Sidewinder Wedge for 20,000 lb Reese M5 5th Wheel Hitch
  • The correct wedge for use with a Reese Sidewinder # RP34FR and the Reese M5 5th Wheel Trailer Hitch # RP30921 is the following: - Sidewinder Wedge Kit for 20,000 lb Reese ELITE, M-Series, or Pro Series 5th Wheel Trailer Hitches # RP44FR.
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  • Fabex 500 Pin Box Replacement And Pull Rite Hitch Adapter.
  • If you're wanting to replace an old Fabex 500 pin box I recommend the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Fabex 500 Item # MR76XR for trailers with 11,501-lb - 14,000-lb GVWR. If your trailer is 14,001-lb - 15,000-lb GVWR then I recommend the MORryde Cushioned 5th Wheel Pin Box for 14K to 15K Trailers w/ Fabex 500 Item # MR66VR. MoRryde has a plate adapter for Pull Rite hitches: MORryde Pin Box Adapter for PullRite SuperGlide Hitch Item # MR57ZR.
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  • Reese Sidewinder to Replace Lippert 1621 Pin Box
  • What you have is the Lippert 1621 5th Wheel Pin Box - 15,500 lbs # LC1191191, and there are two options for a Sidewinder, depending on if you want just the extra clearance the Sidewinder provides or the clearance plus the improved ride a cushioned Sidewinder gives. - Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs # RP34FR - 5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder and Turret - 16,000 lbs # RP61422 I have added links to video reviews and...
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  • Trailair Air Ride LC158777 vs. LC155943
  • That's a really good question, and like you said, the longer length of the Trailair Air Ride 5th Wheel Pin Box - Lippert 1716 # LC158777 is only going to matter somewhat with a short bed truck (and even in that case, it wouldn't matter enough to where someone with a short bed truck could get away with using a fixed 5th wheel hitch as opposed to a sliding hitch). The two king pins are otherwise the same, and since you do have a long bed I highly recommend sticking with the direct replacement...
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  • Comparing The Trailair Rota-Flex 1116 And Trailair Air Ride 1116 Pin Boxes
  • The Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 - 21,000lbs Item # LC155943 has two different placements when installing but as you can see in the attached dimension spreadsheets it has an overall height of 17-7/16" whereas the Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1116 - 19,000lbs Item # LC176440 only has an overall height of 11.05". The # LC155943 is going to sit higher but you also need to make sure you aren't raising too much and placing your camper out of level as this...
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  • Comparing Gen-Y Hitch Gooseneck Pin Box 325-GH-8040 and GY66FR
  • The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621 and Lippert 1621 HD - 18,000 lbs # 325-GH-8040 you were looking at is rated for 18000lbs trailer weight and 3500lbs pin weight, so this will likely be the best option for you as long as your current pin box is a Lippert 1621 or 1621HD. If your loaded trailer has a pin weight that exceeds the 3500lb maximum when loaded stepping up to the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621 HD -...
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  • Sidewinder Pin Box Replacement That Fits 2011 Forest River Microliter
  • I sent your pin box info to Lippert and they informed me that you have a 1621 pin box model so for a Sidewinder you'd need the # RP34FR for a standard model or the part # RP61422 for a cushioned model that has the 5th Airborne air ride system builtin. This would work great with the Reese hitch part # RP30047 and then for the correct wedge you'd want the part # SWW-03.
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  • Will Lippert LC328492 Trail Air Flex Air Pin Box Raise Front of 5th Wheel Higher Than OEM Pin Box
  • The 1621 and 1621HD OEM pin box both have the same bolt pattern, so since your 5th wheel will max out at 14K, you can certainly use the 18K Trail Air Flex Air, part # LC328492. According to Lippert, when the Trail Air Flex Air is fully inflated, the top of the pin box will sit about 2 inches higher than the stock 1621. That would make for a very firm ride, so it's unlikely you'd want to run that much pressure in the bag, Lippert estimates that at half full (which is where most folks...
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  • Can the Trailer Still Be Towed With the Trailair Air Ride 5th Wheel Pin Box If the Air Bag Fails
  • If the airbag inside of the Trailair Air Ride 5th Wheel Pin Box part # LC158777 fails which is very rare then it would be best to have a backup on hand, the Replacement Air Spring for Trailair 5th Wheel Pin Boxes part # LC432404 that way you can replace this roadside because it is only held in place with three nuts/bolts so it should be rather easy. We also have the Replacement Shock for Trailair Air Ride and Flex Air 5th Wheel King Pins part # LC177223 but this is not as critical to have...
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  • 5th Wheel Hitch and Parts Needed to Tow 2014 Ram 2500 With RamBox
  • In order to tow a 5th wheel with a 2014 Ram 2500 with the RamBox cargo management you will need a Sidewinder in order to allow the proper clearances so the pin box does not hit the RamBoxes. To find the correct Sidewinder what you will need to know is the manufacturer and model number of the pin box on your fifth wheel and match that with the correct replacement, such as the Sidewinder # RP34FR. This will replace Lippert 0719, 1621 and 1621HD, Fabex 663 and 665, M&M 663 and 665, along...
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  • Recommended Sidewinder Pin Box For A 2017 Jayco Fifth Wheel And 2021 Ram Short Bed With Ram Boxes
  • You're correct that a Sidewinder pin box is the best option for the your 2021 Ram with short bed and Ram Boxes. This will push the pivot point back back 22" allowing for better turning clearance and prevent the pin box moving side to side and striking the Ram Boxes. Since your current pin box has a Lippert 1621 bolt pattern you'll be able to use the 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000lbs # RP61422 or The Reese Sidewinder 5th Wheel King Pin...
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  • Will MORryde Cushioned Pin Box Fit on 2018 K-Z Durango 1500 Trailer?
  • The MORryde # MR27VR (rated for 19,000 pounds) fits pin box flanges with the 1116 bolt pattern. If your trailer pin box flange has a more common bolt pattern, like 1621HD, you could use the MORryde # MR84VR, rated for 18,000 pounds. If your flange has a different bolt pattern, just let me know for an updated recommendation. The bolt pattern number will be on your current hitch. Usually a four digit number.
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  • How Often Should 5th Airborne Sidewinder be Serviced
  • Great question! The Reese Sidewinder like part # RP61422 has fairly easy maintenance in that Reese calls for lubricating parts of the pin box before each trip and then disassembling it at least once per season to clean and inspect everything. You'll probably be hearing some noise when the pin box is rotating but unless it is alarmingly loud I wouldn't worry about it. If you go to disassemble the pin box and it looks like some things need to be repaired then you can use the Repair...
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  • Wedge for Reese M5 Fifth Wheel Hitch and Sidewinder in 2019 GMC Sierra 3500HD
  • I spoke with a representative of Reese who said that the Reese M5 5th Wheel Trailer Hitch # RP30890 does not have a custom wedge. The Sidewinder # RP61421 comes with a universal wedge, part # 201100 that you will use with your hitch. This is a great set up you have chosen for you 2019 GMC Sierra 3500HD; the Reese M5 hitch will fit directly into the puck system of your truck and has a unique jaw system called a "Talon" which is a single-piece jaw that will wrap fully around your Sidewinder's...
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  • Which MORryde Cushioned Pin Box Could Fit Columbus Compass FB383
  • In order to pick out the correct MORryde cushioned pin box for your Columbus Compass FB383 we need to know what pin box you have now and since there isn't a way for me to look up that info I would need you to run out and check the pin box you have for the model number. The part # MR24VR has a great chance of fitting your RV since it is designed to fit in place of a Lippert 1621 which is probably the most common pin box out there but you'd need to verify.
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  • Difference Between MORryde Pin Boxes RPB72-1621SHD-TA-05 and RPB72-1621HD-05
  • They really are very similar and interchangeable but the # MR84VR is for replacing a Lippert 1621 pin box whereas the part # MR94VR is for replacing a Trailair setup that also was for the 1621SHD.
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  • Why Does My TrailAir Air Ride Pin Box Have A Curt Sticker On It?
  • It is indeed the same product. Curt, and TrailAir are both owned by Lippert, so it's the same exact product as the Lippert TrailAir you ordered, just with a Curt sticker on it.
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  • Replace the Lippert Rhino Box with MORryde Cushioned 5th Wheel Pin Box
  • The MORryde Cushioned 5th Wheel Pin Box, # MR83QR, is the same as the vendor part number RPB77-RHINO-05 that you were provided. This is designed to replace Lippert Rhino pin boxes on 5th-wheel trailers with 14,001-lb - 18,000-lb GVWR, max pin box weight capacity is 21,000 lbs. Although this pin box can tow up to 21,000 lbs., the internal rubber shear spring is optimized for trailers that range from 14,001 to 18,000 lbs.
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  • Correct MORryde Pin Box for Grand Design Reflections 337RLS
  • The correct MORryde Cushioned 5th Wheel Pin Box for a Grand Design Reflections 337RLS is part # MR84VR. This pin box will do a wonderful job of helping smooth the ride due to the internal cushioning which reduces road shock.
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  • Solution to Fix Jerking/Chucking of Fifth Wheel Trailer with Reese Revolution Pin Box
  • Reese Revolution/Sidewinder pin boxes generally aren't too prone to chucking and noise but when this does happen what typically is the problem is the fifth wheel hitch not having a tight enough jaw to hold the trailer tight and prevent the movement associated with the chucking. I don't know what hitch you have now but the B and W Patriot part # BWRVK3200 holds the king pin very tightly and would eliminate the jerking you described. Then for a custom wedge to fit it tightly to your Revolution...
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  • Rhino Trailair Flex Air 5th Wheel Pin Box
  • The Rhino # LC65VR is a stand alone item relative to the other available pin boxes, so not really a long or medium jaw since a Rhino pin box only replaces a Rhino pin box. This does not cross over to replace other makes. If you need a replacement pin box please let us know what model you currently have that we may provide recommendations.
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  • Best Option to Provide More Turning Radius on a 2015 Ford F350 Super Duty Pulling a 5th Wheel
  • We have a solution for this but just replacing the turret is not going to give you the extra space you are looking for. If you are looking to just replace your pin box I recommend Sidewinder 5th Wheel King Pin with Rotating Turret - 16,000 lbs Item # RP61410. This pin box gives you a little extra space. Out of these options I most recommend the Demco Hijacker Autoslide 5th Wheel Hitch w/ Slider - Single Jaw - Ford Super Duty Prep Package - 18K Item # DM8550024. This gives you the...
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  • Are there Dimension Differences Between A Standard 1716 Pin Box And Trailair Air Ride 1716 Pin Box
  • The Trailair Air Ride 5th Wheel Pin Box # LC158777 is going to stick out a few inches more than you current 1716 pin box # LC1191201 but the center of the king pin to the bolt holes is the same for both at 20-3/8" so you won't be adding any length between the 5th wheel and the hitch. Typically when you're replacing a specific pin box like a 1716 with another 1716 there will be no differences in the measurements. That being said the # LC158777 is going to give you a much smoother ride. This...
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  • Will the Reese RP77FR Fit a Leland 7921 Pin Box?
  • The Reese Sidewinder # RP77FR is designed to fit Lippert pin boxes 1716, 1116, and 0115. As you have a Leland 7921, this will not fit your set up, unfortunately. That being said, if you do not want to go with the Reese 5th Airborne # ST400-5AS16K, I do still have an option available for you. The Reese Turret # ST400 is designed specifically for the Leland 7910, 7920, and 7921 pin boxes. Though the arm portion of # RP77FR is not sold separately, this part can be added to get everything...
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  • Can a 2020 Ram 2500 with Rambox Tow Fifth Wheel Trailer
  • There is a way to to a fifth wheel trailer with your 2020 Ram 2500 that has the Ramboxes but you have to install a Sidewinder pin box on the trailer so that the pivot point is raised up high enough that there isn't interference between the pin box and the truck bed rails when turning. If you check out the picture I attached you can see what I mean. Sidewinders are pin box specific so you will first need to know what pin box you have now in order to pick out the correct one. There...
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  • Trailair Pin Box Replacement For A Lippert Rhino Pin Box
  • The Trailair Flex Air 5th Wheel Pin Box - Lippert Rhino - 21,000lbs Item # LC65VR is exactly what you're looking for to replace your Lippert Rhino pin box.
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  • Morryde Pin Box for 2021 Jayco Eagle 336FBOK 5th wheel With Lippert 1621HD 5th Wheel Pin Box
  • It sounds like you have a Lippert 1621HD 5th Wheel Pin Box, 18,000 lbs, # LC1191151. The MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert 1621HD, # MR84VR will be the replacement you are looking for.
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  • Recommended Replacement For A Lippert 1621 Pin Box With A Pull Rite Super Glide Hitch
  • The Trailair Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000lbs Item # LC328492 you linked to will replace your Lippert 1621 pin box and offer you a much smoother ride. The Internal air bag absorbs road shock and built-in shocks ensure that the pin box rebounds and keeps the air bag from breaking down. The scissor-like motion allows pin box to compress, compensating for jarring and bounce and limits chucking by allowing controlled movement of the king pin within your hitch. This...
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  • Reese Sidewinder 5th Wheel Pin Box With Rotating Turret Compatibility With RBW 7019 Pin Box
  • I spoke with Reese to ensure the bolt patterns would line up for you and was told you should be good to go with swapping out your RBW 7019 Pin Box with the Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 - 20,000lbs Item # RP77FR.
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  • Will the MORryde Cushioned Pin Box For Lippert 1621HD Pin Box Also Fit a Lippert 1621 Pin Box
  • Yes. The MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert 1621HD # MR84VR can be used to replace a Lippert 1621 or 1621HD; this pin box replacement is designed for trailers with GVWR up to 18,000-lbs so it is rated properly for your 15,000 GVWR trailer.
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  • 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.
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  • Sidewinder Replacement For An Arctic Wolf 271 RK STD With An SPB72-1621LD Pin Box
  • The pin box for your Arctic Wolf 271 RK STD is the SPB72-1621LD. The correct sidewinder replacement is the 5th Airborne Premium 5th Wheel Air Ride King Pin w/ Sidewinder and Turret - 16,000lbs Item # RP61422. This replacement pin box alters the pivot point of your rig by moving it back 22" which will enable you to make up to 90-degree turns. The enclosed air spring in pin box absorbs shock and adjusts for a smooth ride. Fully enclosed, custom-tuned air spring in air ride trailer coupler...
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  • Flex Air Replacement Shock Availability
  • It's hard to see the dent in the picture you submitted so it's harder to say but it looks like it's probably fine. I'd probably take it on a short trip around the block keeping and eye on it and see if it works like it should. If you find you need a replacement you'd want the part # LC177223.
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  • Trailair Rota-Flex for Fitting 2021 Sabre Cobalt 5th Wheel
  • In the picture you send in I can see there's a Lippert components tag on the side of the pin box and if you measured already and what you have matches a 1621 then the Rota Flex # LC328330 that you referenced would be correct. If you are not sure though if you can give me the numbers off of the tag I can check with Lippert to verify.
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  • What Rota-Flex Pin Box do You Recommend to Replace my 1621HD Model from Lippert Components
  • I really like the Trailair Rota-Flex 5th Wheel Pin Box part # LC328330. It is a confirmed replacement for your 1621 HD pin box and has an 18,000 lb. weight capacity to cover your GVWR of 17,000lbs. Check out the linked video I made on the Rota-Flex. It was a nice improvement to the ride quality and did a good job of reducing the chucking. Check out the video for footage of it in action to actually see how it works. I like the fact that there is nothing to maintain and that the cushioning...
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  • 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.
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  • 2021 Grand Design Momentum 350G Pin Box Replacement With MORryde 5th Wheel Pin Box
  • The MORryde Cushioned 5th Wheel Pin Box - Lippert 1621HD - 18,000 lbs Item # MR64VR is designed to replace your current Lippert 1621 HD pin box
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  • Recommended MORryde Pin Box For A 2018 Grand Design Reflection 303 With A Lippert 1621 Pin Box
  • MORryde # MR64VR, # MR74VR, # MR84VR all have a GTW of 18,000lbs but each have a finetuned spring capacity for a smoother ride which is why you see 11.5k listed for the # MR64VR. Since your 2018 Grand Design Reflection 303 has a GVWR of 11995 and you're probably adding 1000-2000lbs in equipment, water, etc. you're going to want the MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w/ Lippert 1621HD # MR74VR. This model will be an upgrade from the factory 1621 pin box on...
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  • Will The MORryde Orbital Rotating Pin Box Fit
  • The MORryde Orbital Rotating Pin Box, # MR72VR, is built for trailers with a GVWR up to 11,500 lbs. and is designed to replace Reese Revolution 16K pin box. If you currently have this pin box installed then yes, the MORryde will work. In selecting a replacement pin box, you will need to find out the part number of the pin box (king pin) currently on the trailer. The pin box number is usually displayed somewhere on the pin box, either on a sticker or stamped into the king pin itself....
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  • How Tall Is the Reese 5th Airborne Sidewinder 61422 And Will It Replace a Lippert 1621 Pin Box
  • I was able reach out to my contact at Reese and come up with some dimensions on the 5th Airborne Sidewinder # RP61422, but he was not able to provide me with complete measurements on this. However, he did say that this is an exact replacement of a Lippert 1621 pin box so the dimensions, including length and width will be almost completely the same. I've added a photo with a technical drawing that shows the height from the bottom of the lowest point on the front of the pin box to the top...
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  • Cushioned Pin Box to Replace Lippert 1621 for use With PullRite Super Glide
  • There is an option for a cushioned pin box you can use with your PullRite Super Glide, but based my research there aren't any compatible capture plates for the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box - Lippert 1621 and Lippert 1621 HD - 18,000 lbs # 325-GH-8040. So you would need to go a different direction and also get a new capture plate designed for use with the specific pin box. The one I know will work for you as a replacement for the Lippert 1621 is the Trailair Flex Air...
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  • Cushioned Pin Box to Replace Lippert 1716 Pin Box
  • There is a cushioned pin box that is a great replacement for a Lippert 1716, but there isn't a Flex Air, so the model you asked about won't fit. Instead, the correct cushioned pin box for a Lippert 1716 is the Trailair Air Ride 5th Wheel Pin Box # LC158777. The Air Ride is similar to the Flex Air with the exception that the Air Ride doesn't have a pivoting head. The Air Ride is still going to give you a much improved ride over your standard pin box due to its air bag that will greatly...
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  • How To Determine What Reese Sidewinder Pin Box Fits a Dutchmen Royal 5th Wheel
  • If there is no tag or sticker on the pin box itself that can be used to identity the model number then you will need to measure the bolt pattern and then use the chart in the link below to match this up with a model number. The Reese Sidewinder Fifth-Wheel Pin Box part # RP34FR fits the most common model which is a Lippert 1621.
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  • Replacement Pin Box for Leland 7921
  • The best pin box we have for your trailer is the Trailair Air Ride 5th Wheel King Pin part # UF35-946208 which is a direct replacement for both Leland 7920 and Leland 7921 pin boxes. The Trailair Air Ride 5th Wheel King Pin will reduce bounce more so than any other other pin box on the market due to its integrated airbag and shock absorber. This reduced bounce is going to make for a much better ride as well as reduced stress on the tow vehicle and trailer. The internal airbag and shock...
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  • Replacement For Lippert 1621 Pin Box For 16,000 lb Trailer
  • We do have the right replacement for you, though for your 16,000 lb trailer you would actually need something different than the ones you mentioned. That's because the 18k pin box you mentioned is a replacement for the 1621HD, which has different wings than the 1621, and the 15.5k # LC1191191 isn't rated high enough for the 16,000 lb gross weight of your trailer. The correct replacement that is an exact fit for your 1621 and has the right capacity is the following: - Lippert 1621...
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  • What is Best Cushioned Pin Box for Grand Design 311BHS
  • Since the gross weight of your Grand Design 311 BHS is less than 14k the 18k Trailair Flex Air pin box part # LC328492 would easily have enough weight capacity and since it's the best cushioned pin box out there you'll be really happy with it as well! It'll work great with the hitch and adapter you have now too.
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  • Correct TrailAir Pin Box Upgrade for 2008 Jayco Recon ZX with Leland 7920 Pin Box
  • From what I was able to find, the 2008 Jayco Recon ZX came with a Leland 7920 model pin box. So, if you can confirm this is the part number printed on your pin box label, the correct replacement TrailAir Air Ride 5th Wheel King Pin is part # UF35-946208. I've also attached a diagram with various measurements for the Leland 7920, just in case you aren't able to find or read the pin box model number on the label, you can confirm by measuring your existing pin box. If this isn't what you...
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  • Gen Y GY46FR Shock Absorbing 5th Wheel Pin Box Fits
  • The Gen-Y replacement pin box you mention isn't RV specific, it's specific to the OEM pin box used on your 5th wheel toy hauler. Unfortunately, there is no existing reference that will tell me what pin box was used on a given 5th wheel, so you'll need to check the sticker on your existing pin box. The Gen-Y GH-8060 which we refer to as part # GY46FR is a direct replacement for a Lippert 1621 or 1621HD pin box. If the sticker or ID plate on your existing pin box identifies it as either...
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  • Which Cushioned Sidewinder Fits 2019 Grand Design Reflections 303RLS
  • Your 2019 Grand Design Reflections 303RLS uses a Lippert 1621 pin box so the correct cushioned Sidewinder is the part # RP61422. We've verified this with Grand Design.
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  • Can Trailair Rota-Flex Pin Box be Used With Andersen Ultimate on 2021 Ram 3500
  • You can use a Trailair like # LC158778 with the with the Andersen Ultimate Connection 5th Wheel Trailer Hitch System with Adapter # AM3200, or for a Trailair Rota-Flex pin box like # LC328330 it would need a lockout kit from Andersen in order for it to be compatible as this prevents rotation that would cause damage. I have added a link below to our selection of Trailair pin boxes for you in order to find the correct replacement. Having said that, while the Andersen can be used, it is...
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  • Recommendations for Sidewinder Model
  • That depends on what pin box you currently have. The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000 lbs. # RP34FR is designed to replace the Fabex 663 and 665, Lippert 0719, 1621 and 1621HD, M&M 663 and 665. The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 - 20,000 lbs. # RP77FR replaces the Lippert 1716, 1116, and 0115. Please note the attached help articles and let us know what your current pin box is, we will have what you need. ...
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  • Minimum Pin Weight For Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box
  • The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box # 325-GH-8040 you referenced has a maximum pin weight of 3,500 lbs and is recommended that there is at least 2,000 lbs of pin weight for the shock absorption to properly work. It's designed to replace Lippert 1621 and Lippert 1621 HD pin boxes. So if your trailer has 1621, or 1621 HD pin box it will work, but you may not get all the benefits from the shock absorption since the pin weight is 1100 lbs. I attached a short review video for...
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  • Pin Box Replacement for Alliance Valor 40V13 for Better Turning Clearance
  • If you are looking for better turning clearance from your Lippert 1621 pin box your best option would be to replace what you have with a Sidewinder which moves the pivot point back 22-1/2 inches for optimum turning clearance for all short bed trucks. Since you have a 1621 Lippert pin box the correct Sidewinder is the # RP34FR.
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  • Difference Between the Lippert Flex Air and Air Ride Pin Boxes
  • The difference between the Trailair Flex Air # LC369535 and the Trailair Air Ride # LC158778 is that the Flex Air has a pivoting head that is designed to help reduce chucking. Aside from that they both have the air bag and the shock to help improve ride quality. Attached are some review videos that you can check out.
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  • How to Determine Correct Turret for 5th Airborne Premium With Sidewinder
  • The right turret for the 5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder # 5AS16K will simply depend on the pin box you are replacing. You can match up your pin box number with the following turrets: - Lippert Components 1621, 1621HD, and 0719, Fabex 663 and 665, or M&M 663 and 665: Rotating Turret for 5th Airborne and Sidewinder 5th Wheel King Pins # RP61300 - Lippert Components 1116, 1716 and 0115, Fabex 500, 503, 520, 530, 560 and 765, or RBW 7019 and 7028: Rotating...
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  • How To Use Gen-Y Pin Box With PullRite SuperGlide 5th Wheel Hitch 2714
  • The Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box # 325-GH-8040 is going to be what you want. This is a direct replacement for the Lippert 1621 Pin Box. The Gen-Y has a built-in shock absorber that limits bounce and jarring up-and-down motion. This has a towing capacity of 18,000 lbs and a pin weight capacity of 3,500 lbs. My contact at Gen-Y confirmed that it will work with the Pullrite slider hitch, however, you may need Gen-Y Capture Plate for PullRite 5th Wheel Sliding Hitches # GY98FR...
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  • Pin Height Difference Between 5th Airborne Premium Fifth Wheel Air Ride Coupler and Lippert 1621
  • The 5th Airborne Premium Fifth Wheel Air Ride Coupler part # 5AB-E1621-610 measures about 6" from the bottom of the skid plate to the lowermost mounting hole which will be the same if not very similar to that of the Lippert 1621 OEM. Therefore, the height will remain the same so you don't have to worry about the nose of the trailer sitting too high. The dimensions of the 5th Airborne Premium Fifth Wheel Air Ride Coupler are mirrored to the Lippert 1621 OEM. I have attached a photo with...
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  • How To Determine If The Trailer Will Be Level After Installing the Trailair Flex Air Pin Box
  • The Trailair Flex Air 5th Wheel Pin Box part # LC369535 is an excellent option for an upgraded pin. In regards to dimensions, these will be similar to the pin box it replaces as the pin boxes that fit this bolt pattern are all relatively the same dimensions. If you have concerns of towing level then there are adjustments you can make to both the hitch and pin box. In order to be certain you will be level once everything is installed, it would be a good idea to measure this before hand....
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  • When or Why Do I Replace my Lippert 1621 Pin Box
  • Generally Pin Boxes will last the life of the trailer. Some cases where the pin box has experienced alot of chucking and bucking they can see wear. There isn't just a king pin replacement available so you want the Lippert 1621 5th Wheel Pin Box part # LC1191191 for a standard replacement or the Trailair Rota-Flex 5th Wheel Pin Box part # LC328330 for a little upgrade. I really like the Rota-Flex unit because it makes for a much nicer ride quality. Check out the video I did on it below. Keep...
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  • Will the Buyers Products 2" Forged SAE Trailer King Pin Fit a Semi Tractor
  • The Buyers Products 2" Forged SAE Trailer King Pin with 1/2" Bolster Plate part # 337KP20050 should work just fine on a semi-tractor since both they and RV's use a standard 2" diameter kin pin.
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  • Replacement of King Pin Box
  • The Lippert 1716 5th Wheel Pin Box, # LC1324791 is is 12.5" in width. The Lippert 1621, # LC1387883 and the Lippert 1621HD 5th Wheel Pin Box, # LC1191151 are both 12" in width. The easiest way to replace your pin box is to find the pin box's manufacturer name along with its specific pin box number. These are both typically located on a sticker on the pin box or on the king pin itself. This pin box number will usually be 3-4 numbers long and can have letters attached to it. Some very...
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  • How To Find Replacement Pin Box for Keystone 5th Wheel Trailer
  • I spoke to Lippert but they were not able to identify the pin box with this information unfortunately. Therefore, the only option to identify the pin box would be through measuring. I have attached an article that shows how this is done. If you can get back with me with measurements of the pin box or the correct model once measured I'd be happy to assist further. The most common model is a 1621 and the correct replacement for this would be the Lippert 1621 5th Wheel Pin Box part # LC1191191
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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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  • Longest 5th Wheel Pin Box Based on Front Bolt Holes to King Pin
  • The longest pin box we offer based on the measurement you referenced, which is the distance from the front bolt holes to the king pin, is the Lippert 1716 5th Wheel Pin Box # LC1324791. The measurement from the front bolt holes to the king pin (the "3A" measurement) on this pin box is 20-3/8 inches; from the back bolt holes to the king pin (the "3B" measurement) it measures 29-1/8 inches.
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  • Trailair Rotaflex Pin Box Replacement
  • I reached out to my contact at Lippert and this pin box is not serviceable. Is there a chance you are using an autosliding hitch or something that might exert some leverage on that cushion area? The replacement pin box would be the Lippert # LC328330 (1621 Bolt Pattern - Rated 18K) Trailair pin box with rubber compound to absorb shocks. Another option is the Lippert # LC179879 Trailair Flex Air rated 18,000 pounds and 1621 bolt pattern with an internal airbag and a shock absorber...
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  • Fifth Wheel Setup Is Too Tall With TrailAir Flex Air Pin Box and B&W Hitch
  • The B and W Fifth Wheel hitches for your 2020 Chevy Silverado 3500 with OEM prep package like part # BWRVK3710 for the 20K or part # BWRVK3715 for the 25K are height adjustable so if you can lower the hitch and still be level, I recommend to try that first. You also want 6" of clearance between the trailer loft and the top of the bed rails. Around 11-1/2" is the recommended height in most states because of bridges but if you are conscious about how tall the trailer is, it is up to...
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  • How to Reduce Chucking When Towing 2019 Keystone Fusion with Lippert 1116 Pin Box
  • For the Lippert 1116 pin box replacement the best cushioned option is the Trailair part # LC155943. This system uses an air bag and shock to cushion and dampen the movement of the pin box which will do a great job smoothing out your ride quality. Another really big factor with fifth wheel chucking is the fifth wheel hitch jaw system. If you have a hitch that allows a lot of movement in the hitch jaws then that's where most of the chucking is coming from. You'd want a hitch that has...
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  • Can You Replace a Lippert 16K "Turning Point" Pin Box With MORryde # MR72VR 16K Orbital Pin Box?
  • In comparing the MORryde # MR72VR pin box we find that it has a reported 1622 bolt pattern using 4 bolts where the center two bolts are (center on center) 7.5" apart. (each pair of bolts are 2" apart) I have attached drawings illustrating this. I reached out to my contact at Lippert to find out the bolt pattern number for the Lippert 16,000 pound Turning Point pin box and was informed that it was a proprietary style not falling into any standard bolt pattern. However the drawing measurements...
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  • How to Pick Out a 5th Airborne Pin Box for a Trailer
  • In order to determine what Fifth Airborne your 2013 Flagstaff Fifth Wheel 8528TBWS would need you would first need to determine what pin box you have on your trailer. On the pin box there should be a plate or sticker that will say it's model name and number. A very common one is the Lippert 1621 as an example. With that information you will then be able to pick out the correct 5th Airborne. Check out the link I attached that has a chart that you will find which part number you would need.
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  • How To Choose Pin Box Replacement Without a Sticker On Pin Box
  • Since trailer manufacturers do not make information like pin box models readily available to the public, you will need to contact the dealership with the serial number and they should be able to tell you what pin box is on it. Otherwise, the only other way besides a sticker is taking a few measurements. I have attached an article explaining how to measure your pin box to figure out which replacement is suitable.
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  • Will the Trailair Flex Air 21K Pin Box for Lippert 1621 Work On an 18K GVWR Trailer
  • Yes, the Trailair Flex Air 5th Wheel Pin Box part # LC369535 which is rated for 21,000 lbs will work just fine on a trailer with Lippert 1621 Pin Box and 18,000 lb gross vehicle weight rating (GVWR). The gross vehicle weight rating is the most the trailer can weigh fully loaded so you will never exceed the weight capacity of the pin box and even have a few thousand lbs of wiggle room.
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  • Lippert Road Armor 1116 19k Pin Box Replacement Recommendation
  • The safe GVWR rating is 80-85% of total weight capacity to allow for any additional weight added to the trailer. So for a 16k pin box you'd be looking at 12,800lbs - 13,600lbs as a safe weight. I looked up your current pin box with the LCI Number you provided and you have a Lippert 1116 19k so to switch to a sidewinder the compatible fit is the Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 - 20,000 lbs Item # RP77FR.
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  • Fifth Wheel Hitch Recommendation and Sidewinder for 2019 Ram 2500 with Ram Boxes
  • There are great hitches you can use with your 2019 Ram 2500 but the first thing to note is that since you have Ram Boxes you are going to need to use a Sidewinder pin box in order to move the pivot point rearward to give you the needed clearance to make turns with a fifth wheel hitch in your truck. To find the correct Sidewinder what you will need to know is the manufacturer and model number of the pin box on your fifth wheel and match that with the correct replacement. For example,...
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