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Extended Round U-Bolt Kit for Roadmaster Anti-Sway Bars

Extended Round U-Bolt Kit for Roadmaster Anti-Sway Bars

Item # RM-590050-10
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RM-590050-10 - Anti-Sway Bar Parts Roadmaster Anti-Sway Bars
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Use these 20-1/4" long U-bolts to install your Roadmaster anti-sway bar. The extended-length bolts are designed to replace your vehicle's round OEM U-bolts if they are too short. Call 800-298-8924 to order Roadmaster accessories and parts part number RM-590050-10 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Extended Round U-Bolt Kit for Roadmaster Anti-Sway Bars. Accessories and Parts reviews from real customers.
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  • Reviews (6)
  • Q & A (18)
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Roadmaster Accessories and Parts - RM-590050-10

  • Anti-Sway Bars
  • Anti-Sway Bar Parts
  • Roadmaster
  • U-Bolts

Use these 20-1/4" long U-bolts to install your Roadmaster anti-sway bar. The extended-length bolts are designed to replace your vehicle's round OEM U-bolts if they are too short.


Features:

  • U-bolts replace round factory U-bolts that are too short to allow installation of your anti-sway bar
    • Roadmaster's anti-sway bars (RM-1139-143, 1139-144, and RM-1139-149) are used in conjunction with your vehicle's factory bar and mounts using the factory U-bolts
  • Dimensions: 20-1/4" long x 4-1/16" wide x 7/8" diameter
  • 4 Round U-bolts with nuts and washers included
  • Made in the USA
  • Limited Lifetime Warranty


590050-10 Roadmaster Anti-Sway Bar Extra Long Round U-Bolt Kit





Video of Extended Round U-Bolt Kit for Roadmaster Anti-Sway Bars

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




Video Transcript for Roadmaster Anti-Sway Bars RM-590050-10 Review

Speaker 1: Today we're going to take a look at the extended round U-bolt kit for the Roadmaster anti-sway bars.Now, these 20 and a quarter inch long U-bolts are used to install your Roadmaster anti-sway bars to your vehicle.Now, the Roadmaster anti-sway bar's part number RM-1139-143, RM-1139-144, and RM-1139-149 are all used in conjunction with your vehicle's factory bar and it mounts using the factory U-bolts but some of the vehicles that those sway bars are used on may require these extended U-bolts.Basically, these extended length U-bolts are designed to replace your vehicle's round factory U-bolts if they're too sharp. The nuts and washers are included. They are made in the USA. The usable length on this, which is going to be on the inside from the very end here up to the top here. And I got to see inside measurement usable length is 20 and quarter inches. The thread length, in other words it's threaded from this end right up to here, so the length on the thread is going to be five inches.

And then the inside width, which is measured inside to inside is right at four and a quarter inches.


Customer Reviews

Extended Round U-Bolt Kit for Roadmaster Anti-Sway Bars - RM-590050-10

Average Customer Rating:  5.0 out of 5 stars   (6 Customer Reviews)

Use these 20-1/4" long U-bolts to install your Roadmaster anti-sway bar. The extended-length bolts are designed to replace your vehicle's round OEM U-bolts if they are too short.

- RM-590050-10
by:

Easy installation! 849688



- RM-590050-10
by:

Product made a great difference in the handling of my RV. Very easy to install. Due to shoulder surgery my daughter installed it for me!! 849685



- RM-590050-10
by:

Will definitely need them if you install the road master rear sway bar. Mine needed them with the 24000 GVW. 732168



- RM-590050-10
by:

Product was exactly what I needed. Came on time 578291


Comments
Awesome best thing I ever bought for motorhome
Henry - 10/29/2019

63091

- RM-590050-10
by:

Worked OK, I guess. Installer didn't say he had a problem installing them. 572637



- RM-590050-10
by:

easy to in stall on my RV for the roadmaster sway bar.... Cathy T at trailer is the best on line Rep there is at E trailer .... she helped me get this product and it fit my rig ... I have a 2018 holiday rambler and i added an additional sway bar on the rear ... had to have this product to do it John A 469897


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Ask the Experts about this Roadmaster Accessories and Parts

  • Is the Extended Round U-Bolt Kit Needed when Installing the Rear Anti-Sway Bar on a 2015 Ford F53
    When installing the Roadmaster Front Anti-Sway Bar for Motor Homes # RM-1139-148 and the Roadmaster Rear Anti-Sway Bar for Motor Homes # RM-1139-149 on your 2015 Newmar Canyon Star Toy Hauler there are a few things you will want to look for. When I spoke with my contact at Roadmaster he said that you will want to make sure that you have at least 3 threads showing on the U-bolts after installing the rear anti-sway bar. Since you only have half an inch that you can see you will want to...
    view full answer...
  • Installing Extended U-bolts for Roadmaster Rear Anti-Sway Bar 1139-143 on 2004 F-53 Chassis
    The Roadmaster Rear Anti-Sway Bar for Motorhomes # RM-1139-143 can use your factory u-bolts if they are long enough. If they are not, then Roadmaster recommends using the 7/8 inch diameter u-bolts that are longer (most likely the larger diameter due to length needed to ensure strength). I've attached a couple photos from the installation instructions to assist with the size and torque. When torque specs are so large either a large special torque wrench is required or installers are...
    view full answer...
  • Rear Anti-Sway Bar and U-Bolt Replacement Kit Installation on a 2017 Canyon Star on F-53 Chassis
    The rear anti-sway bar # RM-1139-149 will fit the V10 Ford F-53 chassis if the gross vehicle weight rating is 22K, 24K, or 26K. Based on your description you will need # RM-590050-00 u-bolt replacement kit. I have included a link to a video showing an example installation for you. It is a good idea to lift the RV and then use jack stands to support just the axle. With the vehicle supported elsewhere and the axle supported by jack stands it is less likely for the vehicle to "slip" off...
    view full answer...
  • How to Determine If Longer U-Bolt Kit is Needed for Roadmaster RM-1139-149 Anti-Sway Bar Kit
    You can easily determine if you'll need the # RM-590050-10 Extended U-bolt kit by taking a quick measurement. Measure the length of the existing U-bolt that extends through the factory nut. If you can add a 1/2 inch to account for the thickness of the plate used to attach the new anti-sway bar and have 3 threads remaining, you won't need the kit. Otherwise, you will. Since you currently have a 1/2 inch of thread exposed, I'm afraid you're going to come up short on the U-bolt length and...
    view full answer...
  • Recommended Suspension Upgrades for a 2018 Jayco Precept 36T
    The first and most important suspension upgrade you will want to make on your 2018 Jayco Precept 36T is an upgraded rear anti-sway bar, the Roadmaster Rear Anti-Sway Bar part # RM-1139-149. The Roadmaster Rear Anti-Sway Bar is going to help minimize the floating/rocking feeling while out on the highway which is typically the most common complaint with a motorhome and the weakest component from the factory. The second most important suspension upgrade you will want to make is a set...
    view full answer...
  • How To Increase Stability and Reduce Sway Of 2020 Bounder Motorhome on 2019 Ford F-53 Chassis
    It sounds like you meant that the Fleetwood Bounder is on a 2019 Ford F-53 chassis which is very common. The first step in increasing the stability of the 2020 Fleetwood Bounder on the 2019 Ford F-53 chassis is to replace the factory sway bars. The factory sway bars, especially on the Ford Chassis are not as good as the aftermarket sway bars at keeping the motor home in line. I recommend Roadmaster Front Anti-Sway bar part # RM-1139-140 and Rear anti-sway bar part # RM-1139-149. I have...
    view full answer...
  • Tools Needed to Install Roadmaster Rear Anti-Sway Bar # RM-1139-149
    The installation manual for the Roadmaster Rear Anti-Sway Bar # RM-1139-149 along with the Extended U-Bolt Kit # RM-590050-10 simply calls for a torque wrench and "general hand tools". When we installed this kit on the 2017 Ford F-53 we used a 13/16 inch socket, a 5/16 inch socket, a 15/16 inch wrench/socket, an 18mm wrench/socket, and a 16mm socket. I have attached this installation video below that you can also check out.
    view full answer...
  • Anti-Sway Bars for 2019 Tiffin Allegro Open Road Motorhome
    According to what I was able to find, the 2019 Tiffin Open Road Allegro is manufactured on a Ford F-53 Chassis. The exact sway bar you need will depend on the GVWR of your motorhome, which should be mentioned on the manufacturer's ID plate along with the VIN and other important information. For 15,700 lb, 18,000 GVWR models less than 34 feet long, use # RM-1139-146 which would install in conjunction with the existing sway bar. For 22,000, 24,000 or 26,000 lbs, use # RM-1139-149. The...
    view full answer...
  • Front and Rear Sway Bars Needed for a 2012 Winnebago 37F on a 2011 Ford F-53 Chassis
    You are correct in that you will want to be looking at fits for the 2011 Ford F-53 chassis as opposed to the 2012 year. For your Class A motorhome with a V10 you will want to use the Roadmaster Front Anti-Sway Bar # RM-1139-140 which is 1-3/4" in diameter, and the Roadmaster Rear Anti-Sway Bar # RM-1139-149 which is 1-5/8" in diameter. Since your motorhome is rated for 24,000 lbs the bar with the 1-5/8" diameter will work great. Please note that you will want to check to ensure there...
    view full answer...
  • Rear Anti-Sway Bar for 2017 Thor Motor Coach Hurricane 31S With 2016 Ford F53 Chassis
    Yes, the Roadmaster Rear Anti-Sway Bar for Motor Homes, # RM-1139-146 will work on your 2017 Hurricane 31S with the 2016 Ford F53 Chassis with either a V8 or a V10. The anti-sway bar will use the weight of the axle as a brace against the chassis so that pressure to one side of the motor home is countered by the sway bar. It minimizes the side-to-side movement that cargo shift, wind or passing trucks can cause. On some applications longer u-bolts are required to install this kit. For...
    view full answer...
  • How to Determine if Longer U-Bolts are Needed When Upgrading Anti-Sway Bar for 2015 Vista 27N
    To determine whether or not a longer U-Bolt kit is needed when you install the Roadmaster Rear Anti-Sway Bar # RM-1139-146 on your 2015 Winnebago Vista 27N Motorhome you need to look at your current U-Bolts and take a measurement. The bracket that comes with the anti-sway bar kit is 1/2" thick so you just have to make sure that you have 1/2" of extra space on your current U-Bolts plus room to have 3 threads left over. If you have enough room then you don't need the longer U-Bolts. If...
    view full answer...
  • Are Longer U-Bolts Needed for Anti-Sway Bar on 2019 Forest River Georgetown GT5 Motorhome
    Since the U-bolts on your 2019 Forest River Georgetown GT5 motorhome have 1-1/2" exposed thread, it is very unlikely you will need the longer 15-7/8" square U-bolts # RM-590050-00 or 20-1/4" long round U-Bolts # RM-590050-10 to install the Roadmaster Rear Anti-Sway Bar # RM-1139-149. The plate is 1/2" thick (see accopmanying photo) so you will still have an inch of exposed thread, and worst-case scenario is you can order the longer U-bolts if need be, though I am confident you will not...
    view full answer...
  • Front and Rear Anti-Sway Bars for 2018 Holiday Rambler Reno 29M on Ford F-53 Chassis
    It looks like your Holiday Rambler Reno M29 was built on a Ford F-53 chassis. For the front anti-sway bar, you'd use # RM-1139-140. For the rear, you'd use # RM-1139-149. Just a note about the # RM-1139-149- if the factory U-bolts aren't long enough, you'll need longer ones. To determine if what's currently there will work for you, measure how much of the current u-bolt is extending pas the retaining nut. If there isn't 1/2 an inch plus at least three threads sticking out, you'll need...
    view full answer...
  • Recommended Sway Bar For 2019 Thor Motor Coach Challenger 37FH On Ford F-53 Chassis 24,000 GWR
    I recommend Roadmaster Rear Anti-Sway Bar part # RM-1139-149 and the front Roadmaster Front Anti-Sway Bar part # RM-1139-148 for the 2019 Thor Motor Coach Challenger 37FH On Ford F-53 Chassis 24,000 GWR. The factory anti-sway bars are not as thick as these after market bars so they do a better job at improving the drive-ability and reducing the sway by balancing the weight. I have attached an installation video of the bars for your reference. I do recommend to check to ensure there is...
    view full answer...
  • Recommended Sway Control and Ride Suspension for 2004 Gulfstream Independence with Ford f-550 Frame
    For your 2004 Ford F-550 motorhome chassis, the Roadmaster Rear Anti-Sway Bar # RM-1139-143 is the correct fit for your motorhome if it is up to 34 feet long. It if it longer, then you will instead use # 1139-144. The rear anti-sway is the most help out of all components. You will likely need longer u-bolts # RM-590050-00 or # RM-590050-10. Next, the Front Anti-Sway Bar # RM-1139-140 is the next best step followed by the Roadmaster Reflex Steering Stabilizer with Mounting Brackets...
    view full answer...
  • Steering Stabilizer and Anti-Sway Bars for 2015 Tiffin Open Road 32CA Motorhome on Ford F-53 Chassis
    According to my research, the 2015 Tiffin Open Road 32CA has a GVWR of 22.000 lbs, which means that you'll need the following parts: Steering Stabilizer, part # RM-RBK22-RSSA Front anti-Sway Bar, part # RM-1139-140 Rear Anti-Sway Bar, part # RM-1139-149 For the rear anti-sway bar, you might need to replace the OE U-bolts if they aren't long enough. The installation involves adding the Roadmaster Anti-Sway to the existing one. The mounting plate for the Anti-Sway bar is 1/2...
    view full answer...
  • Are Extended U-Bolts Needed To Install the Roadmaster Rear Sway Bar On a 2018 Jayco Precept 36T
    The Extended U-Bolt Kit part # RM-590050-00 (square) or part # RM-590050-10 (round) may be needed to install the Roadmaster Rear Anti-Sway Bar part # RM-1139-149 on your 2018 Jayco Precept 36T but I cannot give you a yes or no answer. The only way to know for sure would be to crawl under the motorhome and take a look at the factory u-bolts to ensure there is enough threads left to install an additional 1/2" plate.
    view full answer...
  • Recommended Anti-Sway Bars for 2005 Fleetwood Bounder 34F
    For your 2005 Fleetwood Bounder 34F, I recommend replacing the rear sway bar first. The rear needs more stability than the front based on the axle placement and weight so it will make the greater impact. I recommend the Roadmaster Rear Anti-Sway Bar # 1139-144. This retains the factory sway bar. The factory u-bolt may not be long enough for the factory nut, washer and 1/2" plate. If not, square top u-bolts will need # RM-590050-00, and round top u-bolts will need # RM-590050-10. To...
    view full answer...

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Installed by:
Jeff D
Written by:
Sarah W

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