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Replacement Spring Bars for Blue Ox SwayPro Weight Distribution System - 750 lbs TW

Replacement Spring Bars for Blue Ox SwayPro Weight Distribution System - 750 lbs TW

Item # BXW4006
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Blue Ox Trunnion Bar Accessories and Parts - BXW4006
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This kit includes everything you need to replace your SwayPro's spring bars. Use these bars to change your system to one with a tongue weight rating of 550 lbs to 750 lbs. Call 800-298-8924 to order Blue Ox accessories and parts part number BXW4006 or order online at etrailer.com. Free expert support on all Blue Ox products. Guaranteed Lowest Price and Fastest Shipping for Replacement Spring Bars for Blue Ox SwayPro Weight Distribution System - 750 lbs TW. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (10)
  • Q & A (15)
  • Videos (1)
  • Photos
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Blue Ox Accessories and Parts - BXW4006

  • Weight Distribution Hitch
  • Spring Bars
  • Blue Ox
  • Trunnion Bar
  • 750 lbs TW

This kit includes everything you need to replace your SwayPro's spring bars. Use these bars to change your system to one with a tongue weight rating of 550 lbs to 750 lbs.


  • Replacement spring bars work with Blue Ox SwayPro weight-distribution systems
  • Kit includes 2 spring bars, lift chains and necessary hardware
  • Tongue weight: 550 lbs - 750 lbs
  • Made in the USA

BXW4006 Blue Ox Sway Pro Weight Distribution Bar Kit - 750 lbs

Video of Replacement Spring Bars for Blue Ox SwayPro Weight Distribution System - 750 lbs TW

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Blue Ox Weight Distribution BXW4006 Review

Today we're going to be taking a look at the Replacement Spring Bars for the Blue Ox SwayPro Weight Distribution System. This kit's going to include everything that you need to replace your SwayPro Spring Bars. These bars are trunnion bars that are going to flex, which is going to offer a nice controlled even ride. These bars have a tongue weight rating of 550 pounds to 750 pounds. You can use these bars as a direct replacement. Because these bars are interchangeable with other Blue Ox Spring Bars, you can also use them to change the tongue weight capacity of your system. The kit's going to include two spring bars.

It's going to come with the lift chains and the hardware. These bars are made from a steel construction and feature a powder coated finish, which is going to do a great job at resiting rust and corrosion. This portion back here easily slides into the head assembly of the weight distribution system and locks into place. These bars are made right here in the U.S.A. That's going to do it for today's look at the Replacement Spring Bars for the Blue Ox SwayPro Weight Distribution Systems..

Customer Reviews

Replacement Spring Bars for Blue Ox SwayPro Weight Distribution System - 750 lbs TW - BXW4006

Average Customer Rating:  5.0 out of 5 stars   (10 Customer Reviews)

This kit includes everything you need to replace your SwayPro's spring bars. Use these bars to change your system to one with a tongue weight rating of 550 lbs to 750 lbs.

- BXW4006

Same as the dealer sells but much cheaper. Brand new in the box. Lightening fast shipping. Great deal and a great company. 757373

- BXW4006

750 lb bars to replace the 1000lb bars I had. Tongue weight is consistently under 750 when loaded, so down-weighted accordingly. 677106

- BXW4006

Purchased a new travel trailer which had a heavier toe weight which required bring bars with a higher weight rating. Was very happy I could purchase these bars to increase the rating of my hitching system at fraction of the cost of purchasing a complete new one. The bars fit and performed as required. 577915

- BXW4006

I ordered a pair of 750# blue ox bars and received them in just 4 days. They arrived in good shape. I had asked a question earlier about the bars and received a quick and informative reply. 475302

- BXW4006

These bars are just what I needed. I have had a Blue Ox hitch with 1000 bars for awhile but bought a new trailer with a lot less tongue weight. That is why I bought 750 bars. The fact you can change bars without changing the whole hitch is a real plus. I think the Blue Ox hitch is the best hitch on the market bar none and I have had a few.. 425224

Working great.
Ted A - 08/25/2018


- BXW4006

Exactly what I have come to expect from etrailer, good and quick service without issues. Thank you once again. 402843

- BXW4006

Great communication from George J. at etrailer. The weight distribution bars arrived very promptly and exactly as described. Now all I have to do is put some 750 lbs. of weight on my trailer and test them. I think I will wait until tomorrow to do that! Thanks guys, nice service. Ted vG 359943

- BXW4006

Reviewed multiple weight distribution hitches before choosing the Blue Ox system. Thuis is a well built system offering the flexibility to adjust to different tongue weights by swapping out trunion bars. Adjustments based on different loads and weights are not complicated and can be performed with trailer loaded. Quality materials. eTrailer was staff was knowledgeable, helpful, and pleasant when I called, answering my questions quickly. Delivery was prompt. Thank you. 271263

- BXW4006

Exactly as described .Shipping Right on time 239637

- BXW4006

As always, Etrailer has delivered! Well packaged, great product. 210931


Ask the Experts about this Blue Ox Accessories and Parts

  • How to Select Correct Weight Distribution Spring Bars to Match Trailer Tongue Weight
    Weight distribution system bars like the Blue Ox Sway Pro # BXW4006 all work well over a range of loaded trailer tongue weight (TW). These particular bars are suited for a trailer with a loaded TW of 550 to 750-lbs. All Blue Ox bars are shown on the linked page. If you trailer's dry hitch weight is 456-lbs, then by the time you load your gear and supplies and fill your water and/or propane tanks it is quite likely you'll be in the range of 650 to 700-lbs TW. In this case these bars...
    view full answer...
  • Can 550 lb Tongue Weight Blue Ox Weight Distribution System be Upgraded To Heavier Spring Bars
    The Sway Pro systems from the highest to the lowest rated all use the same weight distribution head. To change the weight rating of the system, you'd simply swap out the spring bars. For up to 750 lb tongue weight we have the part # BXW4006 or for up to 1,000 lbs # BXW4007.
    view full answer...
  • What Spring Bars Should I Use on my Blue Ox SwayPro WD System for a 3,500 lb Dry Weight Trailer
    When you are looking at a Weight Distribution System, you are going to want to base the weight rating off of the Tongue Weight (TW) of your loaded and ready-to-go trailer, plus any cargo that will be behind the rear axle of your tow vehicle. Since the ideal TW of a trailer is 10-15 percent of the Gross Trailer Weight, the Blue Ox Spring Bars that are rated for 350-550 lbs # BXW4005 will work well if your TW plus any cargo behind the rear axle of your tow vehicle does not exceed 550 lbs. For...
    view full answer...
  • Blue Ox SwayPro Spring Bar Recommendation for Tongue Weight of 700 lbs
    If you use a weight distribution system with spring bars that rated higher than what the trailer calls for you will have a rough ride quality that will be very unpleasant. If the tongue weight is going to be under 750 lbs you'd want the part # BXW4006 or if over 750 part # BXW4007 would be what you need. You should that the tongue weight figure includes the weight of any cargo behind the rear axle.
    view full answer...
  • How to Determine Which Blue Ox Spring Bars I Have to Determine Their Tongue Weight Capacity
    There's a surprisingly easy way you can determine exactly what spring bars you have and therefore exactly what their tongue weight rating is. The bars are going to have dimples on them (see accompanying photo) which is going to tell you the bars you have and the corresponding tongue weight capacity. No Dimples = 200 lbs to 350 lbs Tongue Weight Capacity: Spring Bars for Blue Ox SwayPro # BXW4015 1 Dimple = 350 lbs to 550 lbs Tongue Weight Capacity: Spring Bars # BXW4005 2 Dimples =...
    view full answer...
  • How To Determine Blue Ox Spring Bar Weight Capacity
    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 total tongue weight. One dimple means it is rated for up to 550 lbs. Two dimples indicates up to 750 lbs. Three dimples indicates up to 1,000 lbs. Four dimples indicates up to 1,500 lbs tongue weight. Five dimples indicates up to 2,000 lbs...
    view full answer...
  • Clamp-On Weight Distribution System Needed for a Variety of Trailer Sizes
    We do have a weight distribution (WD) system that will fit your various trailer size needs, but if your current trailer hitch/ball mount is already hitting the ground during some of the driveways you have to turn in to I'm not sure if adding a WD system to the mix is a good idea. The shank and head unit will hit the ground and if your driveways are steep enough I doubt the bars are meant to flex that much. If you still need the WD system then the Blue Ox SwayPro systems have clamp-on...
    view full answer...
  • Weight Rating of Blue Ox Spring Bars With Two Dots
    Springs bars from Blue Ox that have two dots (sometimes called dimples or notches) are rated for up to 750 lbs of tongue weight. What you have are the Spring Bars for Blue Ox SwayPro Weight Distribution System # BXW4006.
    view full answer...
  • Are Long or Short Torsion Arms Better for a Weight Distribution System
    The reason long bars on weight distribution (WD) systems, like the Strait-Line # RP66074, are so popular is because that means the clamps for the trailer frame will sit about 30" away from the coupler. Typically this avoids items that sit on the tongue, like propane tanks. Short arms are a great substitute for when things like propane tanks get in the way. There really is no advantage or disadvantage of using long or short arms other than the location of other things on the tongue of...
    view full answer...
  • Will One Weight Distribution System Work for Trailer that Weighs from 4,900 Pounds to 14,000 Pounds
    When choosing a weight distribution system you will need to go by the total tongue weight. This is calculated by taking the tongue weight of the trailer when loaded and ready to tow and adding to that the weight of anything loaded behind the rear axle of the tow vehicle. On a trailer with such a large gross weight range, a single system is not likely going to work. But what you can do is use a higher capacity system and then when the tongue weight is lower, swap out the spring bars. On...
    view full answer...
  • Can 750 Pound Spring Bars Be Used on 550 Pound Blue Ox Weight Distribution System
    Yes, you can replace the spring bars on your Blue Ox SwayPro Weight Distribution System # BXW0550 with higher-rated 750 pound bars # BXW4006. This will upgrade the 550 pound tongue weight capacity on your existing system to the 750 pound limit of the new spring bars. All the SwayPro weight distribution systems use the same head unit, so the spring bars can be swapped without issue.
    view full answer...
  • Recommended Replacement Spring Bars For Blue Ox SwayPro Weight Distribution System
    Based on the information you sent, you are landing at the top capacity of one set of replacement spring bars, Item # BXW4006, and the lowest capacity of another set of replacement spring bars, Item # BXW4007. With your guess of 730-lbs to 800-lbs tongue weight, I recommend the Replacement Spring Bars for Blue Ox SwayPro Weight Distribution System, Item # BXW4007, which have a tongue weight range of 750-lbs to 1,000-lbs. If you add more weight to your trailer or more cargo behind your...
    view full answer...
  • Weight Distribution System Needed for 3,000 lb and 6,000 lb Trailers
    I can help you find a Weight Distribution (WD) system that works for you, but since it looks like you will have a pretty big range of weight capacities it is impossible to use the same WD system without changing out at least the arms. You will want to choose a WD system with a Tongue Weight (TW) range that the Total Tongue Weight (TTW) of your towing setup falls in the middle of. To find the TTW of your towing setup you will need to add the TW of your fully loaded and ready-to-go trailer...
    view full answer...
  • Recommended Weight Distribution System for Towing Car Hauler with Alternating Loads
    Using the same weight distribution system with such a drastic difference in the amount of weight you're towing can be an issue. If your load is too heavy for the system then it won't be able to do its job, go too light and it will make your trailer ride rough. The Reese Steadi-Flex you mentioned, part # RP66560, is certainly too heavy when your trailer is on the light side and may not even be enough when fully loaded. Instead I recommend using a system that you can convert based on your...
    view full answer...
  • Air Bags or Weight Distribution for Towing a Flagstaff Epro with a 2017 Chevy Silverado 1500
    When it comes to leveling out or supporting a trailer towing setup a weight distribution (WD) system is almost always the recommendation when compared to air bags. The reason being that air bags will help to level the towing setup, but a WD system distributes that tongue weight between all axles (both tow vehicle and trailer) which not only helps to level the towing setup, but it also improves handling. The only time that air bags would really be recommended over WD is if the pickup is...
    view full answer...

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Info for this part was:

Written by:
Lindsey S
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Lori W
Updated by:
Laura H
Installed by:
Cole B

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