What is Difference Between Overslung and Underslung Trailer Coupler  

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…

To select the correct B&W Continuum Weight Distribution System for your needs you will first need to determine if you have a standard coupler(mounts on top of trailer frame rails) or an underslung coupler(mounts on the bottom of the trailer…

The B&W Continuum Weight Distribution System part #BW78FR requires at least 24" of space on the frame directly behind the coupler and along the side a few inches back from there. This works with most trailers but for some it will not and,…

Great Question. Underslung couplers on trailers look like the trailer frame is sitting on top of the coupler. For an example of what one looks like check out the etrailer.com A-Frame Coupler Underslung #CA-5335-B. I attached a picture of one for you…

Yes, the B&W Continuum Weight Distribution System #BW78FR can be installed as easily on your angled driveway as it can be on level ground.

Based on the information you gave, to mount the Ultra-Fab 2" Trailer Hitch Receiver for Trailer Frames #UF35-946403 I recommend boxing the frame at that location. If you don't wish to box the frame, then I instead recommend using the Curt…

The vast majority of trailers on the market use a standard coupler (installed on top of the trailer frame) which is compatible with the B&W Continuum Weight Distribution System w/ Sway Control #BW28FR. Underslung couplers aren't as common but…

Blue Ox has an easy system for determining the weight capacity of your spring bars, whereas other companies may use measurements or printed capacity to assist. With Blue Ox, there is a 5 dimple system: No dimples means it is rated for up to 350 lbs…

Sometimes just use of new spring bars can update a weight distribution hitch to match the tongue weight (TW) of a new trailer, but in the case of your Equal-I-zer system, part #EQ37140ET, the highest-rated bars are the 1400-lb set #EQ90-01-1499 that…

You will be able to use the Extended Weight Dist Shank #EQ90-02-4600 which is 14" long from the hitch pin hole center to the bolt hole center for the hitch head. You can use this measurement to determine if you will have enough room for your…

The correct Blue Ox SwayPro Weight Distribution System for a 2020 Forest River RV Flagstaff E-Pro E19FBS is part #BXW0750. Please note, you'll also need the 2" Hitch Ball part #A-90.

Based on the weights you listed for the Flagstaff Micro Lite 21FBRS the Blue Ox kit part #BXW0750 would seem to be the best option as it has a tongue weight range of 550 to 750 lbs. These kits don't have the widest tongue weight ranges and…