Roadmaster Front Anti-Sway Bar - 1-3/4" Diameter
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2027 Ram 1500
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2027 Ram 1500
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The 1-3/4" diameter Roadmaster front anti-sway bar ties the axle to the chassis to balance weight transfer through turns. Built from thick 4140 chromoly steel, it’s engineered to limit side-to-side movement and keep the vehicle level even when the road or load shifts. The result is sharper, more predictable cornering and a ride that feels planted instead of leaning or wandering.
When gusts or passing rigs start to push you around, this bar keeps things steady. It uses the weight of the front axle to brace the frame as it shifts, stopping the front end from drifting and reducing how much you need to correct the steering. Less sway means a straighter track, fewer white-knuckle moments, and a calmer drive no matter what the wind is doing.
By cutting down the body roll and side-to-side sway that make long drives tiring, the bar helps you stay relaxed behind the wheel. It takes less effort to hold your line on uneven pavement or through crosswinds, so you can focus on the road instead of constantly fighting the wheel.
This setup is built to last. The 4140 chromoly steel alloy bar is stronger and harder than standard 1020 steel, resisting twist and wear for long-term performance. Polyurethane bushings replace softer rubber ones—standing up to oil, gasoline, and ozone without breaking down. Less flex in the system means more consistent support every mile.
Everything needed for mounting comes in the box—heavy-gauge hardware, bushing lubricant, and clear instructions. The design bolts on without drilling, so you can get the stability upgrade done with basic tools and be back on the road with a more solid, confident feel.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at this Roadmaster Front Anti-Sway Bar. This anti-sway system is going to attach to the front axle and to the chassis of your vehicle. It will use the weight of the axle to brace the frame as it shifts and turns. So it is going to minimize your side to side movement for an improved sense of overall stability. It will help to diminish the effects of crosswinds, passing motorists, and shifting cargo.
It gives you a more solid feel and allows you to execute those turns and quick maneuvers with more confidence 'cause you're not gonna feel like your vehicle is shifting on you as much. This will also allow for a more level ride even on your irregular surfaces. This system is designed specifically for the International MV-607 frame. So it is going to work for your International MV series trucks, as well as the Nexus Ghost, Triumph, and Wraith Motorhomes that you see on the screen there. So if you have any of those, this is going to work for you.
This will work in conjunction with your vehicle's suspension system. It's engineered to avoid interference with most popular aftermarket add-ons and accessories. It is constructed of a one and three quarter inch thick 4140 chrome moly steel. So it is going to provide superior strength for you. It does use these polyurethane bushings that are going to be a longer lasting option than your standard rubber.
They are gonna be more durable and resistant to damage caused by oil, gasoline, and ozone. So that less wear means that it's gonna give you, give the system better support for a longer amount of time. So these are gonna be a really good system for you. We also have our heavy gauge mounting hardware, easy to follow instructions, and our bushing lubricant all included. Now this system will do a great job for you.
It will pair really well with a rear anti-sway bar that is sold separately, but that's going to give you even more stability. And if you are looking for the ultimate upgrade your sway bars are more for your side to side movement. I would recommend helper springs for your up and down motion. And then a steering stabilizer is gonna help with your handling and making it easier for your vehicle to come back to center, so you don't have that driver fatigue as much. But overall, this system is going to work really well for your front axle. It is made here in the USA and it comes with a limited lifetime warranty. So if you do have any issues with it you're more than welcome to reach out to us here at etrailer.com. But I think this is gonna do a good job, be a big improvement for you, making your whole system just feel a whole lot more stable. So that completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
After a year of usage, I couldn't be happier with the Roadmaster front and rear anti-sway bar kits. The rear kit for my W22 chassy, the mounting hardward would not fit properly. I call Roadmaster directly and they custom built the mounts, painted, and shipped within days.
Grate stuff. Easy to bolt up and figure out. Drive quality improved dramatically and less sway with trailers.
Just in the kit with the grease and red lock tight the hardware washers were one size to large so I got the right ones and installed all is well.
Super quality product build. However it is made for ford transit dually. I have single rear tires. Worked with road master rep to select the correct sway bar for my van.. RM82EQ
you guys did great package was damage RM-1139-149
Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter the sway bar itself
I Installed the bar in my Ram promaster HR 2500 and it’s an incredible difference on twisty mountain roads. I highly recommend it.
This is a must have for your Motorhome. What a difference in the ride of the coach through the highway washes, the side winds and the side drift of the big rigs. This bar reduces the coach movement by as much as 80% I would say. The installation is easy for someone who is mechanically inclined and still doable for DYIer as long as you have the tools ( standard 1/2” drive tool set, low speed high torque drill for the holes in the frame and a 250 plus ftlbs torque wrench). I would highly recommend this Anti-Sway Bar.
The products itself is good. Works well. But you would think when you spend $800 for something, the directions could be very detailed. There could be a complete video of it being installed. They don't give you specs for torquing any of the bolts and some very lousy pictures with a small amount of instruction. You can do better Roadmaster you want to charge me a lot of money for something then give me great detail on in installing it as well.
After waiting 3 weeks the swaybar kit was drop-shipped from the factory. Received and discovered the bushing inserts were the wrong size (too small) for the bolts that were sent. Contacted Roadmaster support and provided them a photo and invoice as requested. The replacement inserts were approved and shipped out. I got metric bolts to go with the inserts I received. I will save the replacements for additional replacements.
The install was fairly straight forward.
Haven't had a chance to tow the 5th-wheel yet.
a quick fix it to install sway bars front and rear.
I did this and just came home from 2400 mile trip.
installed rear only before we left, then at our destination installed front.
the drive back it handles wayyy better and it sits level now.
""your results may very-use at your own risk. ""
from etrailer.com
rear = RoadMaster 1259-109.
front = RoadMaster RM-1259-105 with RM-590063-00 bracket kit.
i'm sure over time they will flex and stress and start to lien again.
But for now it looks much happier. ( and level )
and i'm very happier with performance and drivability
Seems the big bars help distribute the load to both sides,
you can drive it with one hand now.
and when a truck passes, it's very manageable.
( this could be part the tires on it )
these can be installed in about 6 hours pretty easy.
The hardest thing is drilling the 8 holes in frame. ( 4 front 4 rear. )
We had to shift 2 brake lines over via and small bracket and covers lines with old fuel like to act as wear buffer.
The anti sway bar is a big improvement when the truck bed camper is on. The installation took a bit longer than expected because the frame brackets don’t fit around an aftermarket B&W gooseneck hitch. I had to fabricate new top brackets and drill out the bottom brackets to widen the bolt pattern. Keep this in mind if you have a gooseneck hitch.
Received the product in a timely manner. The shipping company used I’d give a no star rating. I received the anti-sway bar bare out of a box or wrapper with the installation part box and a cut out piece of cardboard with the shipping label on it taped to the bare bar with about five yards of packing tape. The bar was scuffed, scratched and chipped with the RoadMaster label destroyed. I realize it’s going to be installed under the front of my motorhome but as much as it costed I would like to be the one to scratch and scuff it. If I was a company installing this on a customers vehicle I’d return it. I do not believe it was shipped from etrailer in this condition.
I prefer to purchase direct from most manufacturers due to tech support and service. However I find myself purchasing from etrailer.com more and more due to the positive experience, expert tech chat advice, fast shipping and great prices to name just a few. It makes all the difference knowing that you are communicating with a real person and not AI. The Roadmaster 1 3/8” rear sway bar has been my most effective purchase for my truck to date. The SuperSprings SuperSway Stops are right up there in effectiveness as with the rear sway bar. The rear sway bar and SuperSprings SuperSway Stops were very easy to install and I feel like I am driving a different truck. In combination, the two purchases have made the truck and camper feel like one vehicle; no longer does it feel like a truck with something in the bed. VERY stable on turns, twists, hills and angles. I cannot recommend these products enough.
After about a year with both the Roadmaster Rear Anti-Sway Bar and the TorkLift StableLoad Upper Overload Spring Upgrade on our truck camper setup, my experience has been mixed.
With the StableLoads, some of the mounting screws eventually fell out. I contacted etrailer expecting the issue to be handled under warranty, but instead of taking care of the replacement directly, I was referred to the manufacturer. Considering the age of the product and that it was purchased through etrailer, I was disappointed with how the warranty issue was handled.
As for the Roadmaster 1-1/2" rear anti-sway bar, it is a very solid and well-built product, but in our particular application I honestly haven't noticed a major difference in body roll while taking turns with the camper loaded. I have driven the truck both with and without it, and the improvement was much less noticeable than I expected.
Neither product is necessarily bad, but based on our experience, the improvement in handling hasn't been significant enough for me to strongly recommend them given the cost.
Great buying experience with ETrailer. Fast shipping and quality constructed part. Noticeable difference in controlling body sway. Very pleased with the bar and highly recommend Etrailer.
2025 Sprinter 2500 low roof WITH factory sway bar. Added this bar to control the terrible handling at the rear of these vans and it absolutely takes care of that. Be aware that you 100% need the retro-fit kit for this bar to be installed as the factory sway bar end links will NOT work. The retrofit kit that you need is the RM-590064-00.
I have carried a truck camper for 7 years with just Timbrin blocks also from Etrailer and finally made the move to Roadmaster anti sway bars front and rear. Planning a trip to the west coast from Georgia next year and wanted all the help I can get for stability on the mountain roads. Have yet to test but Im sure it will be a noticeable improvement. When my wife takes the wheel so I can have a break she would see-saw the steering wheel to balance the load and it drove me insane. Hoping for relief for both of us.
RM-1109-121 Rear Sway bar for 85 Chevyvan G30 RV. Install was pretty straightforward. I would mount the brackets to the frame first and then the sway bar to the axle. It’s easier to drill the holes without the sway bar getting in the way.
Before I replaced the shocks and upgraded the from sway bar and added the rear sway bar my G30 Chevyvan Winnebago was a wallow wagon. It took 110% focus to drive. Now it drives like a regular vehicle. Smooth. No leaning over when cornering. It’s night and day.
Excellent high quality product made a big difference in handling with heavy Artic Fox camper
Give poor rating regarding installation instructions
Great instructions and nice, high quality fasteners.
Fitment was great and only minor adjustments to my Air lift air bags was needed.
I have a 2013 Ram 3500 Dually with:
-Torklift 30K hitch
-5” Exhaust
-Air lift 7500XL air bags.
The lower brackets for the air bags needed to be moved slightly and I had to cut the excess bolt off on the passenger side.
Takes about 2 hours to install, need some mussel to break nuts loose and tighten
Excellent customer service, it does not get any better than etrailer. Shawnee went over and beyond to get my parts delivered on a very tight schedule, you just don't get that kind of follow thru these days.
My International MV607 chassis rides like a dream. LOVE the anti sway bar from Roadmaster!
Seems to do the job!!
The product was excellent quality, instructions were easy to follow.
I installed this myself (not everyone could, requires a 3/4” Torque wrench)
Sway bar helped with stability in turns as well as passing and being passed by other large vehicles. Also helped with cross winds while on the road.
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