What is Difference Between Overslung and Underslung Trailer Coupler

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Question:

What is the difference between overslung and underslung?

asked by: Mike P

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Expert Reply:

An underslung trailer coupler is one that attaches to the bottom of the trailer frame and an overslung one is one that attaches to the top of the frame.

The Replacement Head for Blue Ox SwayPro Weight Distribution Systems part # BXW4011 is for trailers with an overslung mounted trailer coupler like part # CA-5400-B whereas the Replacement Head for Blue Ox SwayPro Weight Distribution Systems part # BXW4012 is for trailers with an underslung mounted trailer coupler like part # CA-5335-B.

expert reply by: Jameson C

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Answer 1

Hello Danny, I’m really glad you mentioned the Equalizer! When sway is the issue, that one and the Weigh Safe are definitely my go-to options. They both have 4 point sway control, with straight spring bars and frame brackets. They can be a little…

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Answer 2

Hello Dave, thanks for reaching out. The reason for this is certain Jayco models use underslung couplers. The Parkit360 Force Electric Trailer Dolly #PA46VR is only compatible with overslung couplers. Overslung is a lot more common than underslung.…

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Answer 3

An underslung trailer coupler is one that attaches to the bottom of the trailer frame and an overslung one is one that attaches to the top of the frame. Measuring is not required if you just take a look at your coupler and see where it attaches to…

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Answer 4

Hey Mark, thanks for reaching out, and congrats on the new camper! We have just the thing! Here is what I recommend: - Blue Ox SwayPro Weight Distribution w/ Sway Control for 2-1/2" Hitch - 15K GTW, 1.5K TW #BLU54TR The Blue Ox WD hitches are…

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Answer 5

With your tongue weight at 1,175 lbs when loaded, you also need to account for any cargo weight behind the rear axle as well to get the total tongue weight rating. I've attached an article to assist. You are correct that your current system is…

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Answer 6

Hey Micah! Pacbrake has actually been around for a long time, more than 60 years. We have had customers ask for these air bags in the past, and we've seen them on vehicles coming in. Until now, Firestone has been the go to since their quality is…

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Answer 7

I would recommend that Blue Ox TrackPro #BLU77FR simply because it does not have lift chains like the SwayPro #BXW1006. Both will do a great job but the TrackPro will have a little less movement because of the absence of drop chains. Blue Ox is a…

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Answer 8

Thanks so much for the photo that was super helpful, and what the axle tag shows is that you have a #11 Dexter Torflex axle. We do have the correct lift kit for you, which is the following part: - Torflex Lift Kit - Tandem Axle #K71-724-02 This kit…

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Answer 9

The Firestone Standard Air Spring, #F6401, has a maximum load leveling capacity of 2,500 lbs each. When using 4 of these springs on your tandem axle trailer, they will provide you with a maximum load leveling capacity of 10,000 lbs and would not be…

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Answer 10

Yes, you can replace the 2-1/2 inch shank on your 20K Blue Ox SwayPro weight distribution system with a 2 inch shank so you don't have to get a completely new hitch. The correct shank, which does have a 20,000 lb towing/2,000 lb tongue weight…

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Answer 11

The Equal-i-zer Weight Distribution System part #EQ37100ET and Blue Ox SwayPro Weight Distribution System part #BXW1000 are both great options. However, in regards to combating trailer sway the edge has to go to the Equal-i-zer because it has true…

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Answer 12

Hey there Layla! There are a few different forms of weight distribution hitches, but the majority of the systems that have sway control use friction bars, which work similar to brake pads on your vehicle. This works really well, but it can sometimes…

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What is Difference Between Overslung and Underslung Trailer Coupler

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