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  1. Anti-Sway Bars
  2. Safe-T-Plus
  3. Steering Stabilizer
  4. Mounting Hardware Included
Safe-T-Plus Steering Stabilizer with Mounting Hardware Kit - Custom Fit
Safe-T-Plus

Safe-T-Plus Steering Stabilizer with Mounting Hardware Kit - Custom Fit

Part Number: ST98MR
In Stock
$595.36
Anti-Sway Bars

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You don't have to fight the wheel through wind and passing trucks. This stabilizer keeps your coach tracking straight and gives you more control to handle a blowout (if that happens), so you're not tired at the end of a long day of driving. 1-800-940-8924 to order Safe-T-Plus anti-sway bars part number ST98MR or order online at etrailer.com. Free expert support on all Safe-T-Plus products. Great prices and Fastest Shipping for Safe-T-Plus Steering Stabilizer with Mounting Hardware Kit - Custom Fit. Anti-Sway Bars reviews from real customers.
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  • Reviews (14)
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Safe-T-Plus Anti-Sway Bars - ST98MR

  • Steering Stabilizer
  • Safe-T-Plus
  • Mounting Hardware Included

You don't have to fight the wheel through wind and passing trucks. This stabilizer keeps your coach tracking straight and gives you more control to handle a blowout (if that happens), so you're not tired at the end of a long day of driving.


Highlights

  • Keep Your Steering Straight: Provides improved handling through crosswinds and passing semis.
  • Maintain Control After a Blowout: Helps keep your steering steady so you can guide the rig to a safe stop if a tire fails.
  • Drive Without the Fatigue: Reduces white-knuckle grip and constant corrections, making long trips less tiring.
  • Maintenance-Free Design: Built with sealed hydraulics and a protective finish to ensure long-term reliability.
  • Bolt-On Simplicity: Installs and adjusts with standard tools - no welding or drilling required.
  • Complete Setup for Your Vehicle: Includes stabilizer, mounting hardware, and instructions for installation.

Made in USA

Features to know about

Stop Fighting the Wheel on Long Drives

You've had tough experiences while driving your rig. You white-knuckled when a semi blasts past and nudged things back on course through heavy winds. It's exhausting. With this stabilizer in place, the coach tracks straight instead of wandering and it cuts down on those constant corrections you have to make. It makes a huge difference when you spend hours on the road. When you stop fighting the wheel, you won't be worn out when you finally park.

Stay in Control When a Front Tire Fails

A front tire failure is a nightmare scenario everyone dreads because it happens fast and the wheel yanks hard. If you've been through it, you know how helpless it feels when the rig wants to pull out of the lane. That's probably when this stabilizer really matters the most. It helps hold the wheel steady so you can slow down and bring your coach under control. It won't stop a tire from failing, but it can keep that situation from turning into something worse.

Bolt-On Install with Vehicle-Specific Hardware

safe t plus bolt on installation

This stabilizer bolts on with hand tools and includes the mounting hardware for your vehicle. Once it's mounted, it has to be centered and torqued properly to work. If you're comfortable with those adjustments, you can handle it with some extra time. If not, we can help you find a trusted installer to handle the job. Either way, you only have to do it once, and it stays put.

Specs

Construction:

  • Steel

Color:

  • Silver

Warranty:

  • Lifetime


31-140 Safe T Plus Steering Control Stabilizer - Silver

E-353K14 Safe T Plus Mounting Hardware Kit - Steel

Installation Details ST98MR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.9

15 reviews
Review sort icon
You don't have to fight the wheel through wind and passing trucks. This stabilizer keeps your coach tracking straight and gives you more control to handle a blowout (if that happens), so you're not tired at the end of a long day of driving.

by:
2024 Jayco Greyhawk Motorhome

Made a massive difference in the steering now get very little push from the wind or big trucks, seems expensive for one shock and two brackets but there is a definite difference in the drive. Went from always needing two hands driving to one hand control. Nice product

Kate F. profile picture
Etrailer Expert

Kate F.

4/23/2026

Glad we had the right part to get some color back into those white knuckles Chuck! Where did you go for the first trip with it installed?



by:
2026 Ford E-Series Cutaway

Just had the safety plus installed on a 2027 Ford E350 and noticed greater tracking down the road on the first drive. Also, the steering is a tad firmer, which adds to the stability. Absolutely, the first suspension upgrade you should make.



by:

The steering stabilizer worked as advertised. I immediately noticed the steering on my 2025 E450 had tightened up as I drove on the streets and highways right after the install. Based on that experience, I anticipate a lot less driver fatigue on my next long distance trip.



by:
Roadmaster

After trying out both the Safe-T-Plus and the Roadmaster Exact Center, I can say they both do a great job keeping your motorhome going straight down the road. The main difference is how they feel. The Exact Center reacts fast when you come out of a turn, the wheel snaps back to center quick, kind of like a rubber band. It’s tight and responsive, but it can feel a little jumpy if you’re driving a bigger or top-heavy rig. I like that the Safe-T-Plus has a more relaxed feel. It uses one big gas strut that gives you smooth, even resistance the whole time you’re steering. Instead of snapping back, it just helps you stay straight without fighting the wheel. It kind of feels like driving a luxury SUV instead of a motorhome.

I was impressed by how simple the install was after watching two installs. The stabilizer bolts to the sway-bar bracket and clamps around the tie rod with U-bolts. If you’ve got some basic tools and a little time, you can do it right in your driveway.

If you’re trying to decide between the two, here’s the best way to think about it: the Exact Center is great if you want quick response and tight steering, especially on smaller rigs or twisty roads. The Safe-T-Plus, on the other hand, is best if you want smooth control on big rigs or windy highway drives.



by:

Simple to install. I replaced the front sway bar at the same time, since the safe t plus bracket installs under the hellwig sway bar mount. Dialing it in was easy. I found a deserted road and drove very straight, stopped and held the wheel until the key was out thus locking everything straight. Loosened up the u bolts, the spring relaxed and then retightened and torque to spec. Safe t plus claims you should be able to drive .5 mile with no hands on wheel. I made about .4 mile. It works great. It takes a little more to turn the wheel, but the comes right back to center.



by:
Roadmaster

Install was pretty straightforward, and can be done in a driveway or garage on the ground. It's not overly complicated as far as getting it in place and the adjustment to get it dialed in perfect is easier (in my opinion) than the roadmaster, and not hard to do. I would give it a 5/10 difficulty with that rating being slightly high just because you will be under the RV and it can get tight.



by:
Ford

We have a 31 foot coach with the 2024 Ford E450 chassis. The original equipment was wholly inadequate so we replaced the steering stabilizer with what I thought would alleviate the wild ride we were having when we were passed by a semi truck. It didn’t. Now we had the wild ride, plus it was constantly pulling to the left. I was constantly steering to the right to go straight.

The good folks at etrailer installed the Saf-T-Plus on our coach and it’s a whole new experience. No more fighting the wheel. I feel confident that we will go down the road without any more wild rides!

Also, the experience with etrailer was first rate before, during and after the installation.



by:

Two test drives, some adjustments, all seem great. I can’t wait until the next trip. The video was helpful on installation and the entire team was there when I needed them.

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

12/11/2025

When and where is the next trip planned for, John??

John O. profile picture

John O.

12/11/2025

@GwendolynY. Kissimmee and a trip to Universal for Mardi Gras February 6-14.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

12/12/2025

@JohnO Oh I may be a little jealous of that trip! Me and my sisters have been talking about wanting to go down there and see the new Epic Universe expansion.


by:
2025 Ford E-Series Cutaway

Made a significant difference in handling. Steering is more firm, has reduced wander and cut back on pushing from passing trucks and windy conditions. Was easy install, took a couple of adjustments to get it perfectly centered. On install, be aware that the bolts holding the sway bar that need to be removed are very, very tight. Not easily removed with just hand tools, I had to use a heavy duty impact wrench to loosen them. Did the install in my driveway, would have loved to have a lift like in the excellent etrailer video. ;c)
Order came very quickly and well packaged, arriving in perfect condition. All in all, an excellent product and super service from etrailer. Highly recommend!!!



by:
2021 Forest River Sunseeker Motorhome

Made a significant difference In handing and blow back from cars n trucks.



by:

Only have 4 miles on it but it seems gr eat



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See what our Experts say about this Safe-T-Plus Anti-Sway Bars

  • Recommended Sway Bars for a 2025 Entegra Oddessey Motorhome Built on a Class C E-450 Chassis
    Hey Paul, thanks for the information! To add sway bars to your 2025 Entegra Oddessey, I recommend the following parts: Front Sway Bar - Roadmaster Anti-Sway Bar item # RM-1139-189. This kit includes a 1-3/8" diameter sway bar, polyurethane bushings, and reinforced end links. Rear Sway Bar - Roadmaster Rear Anti-Sway Bar item # RM-1139-147. This kit includes a 1-1/2" diameter sway bar that is going to be a noticeable upgrade if your motorhome came with the factory option. It also includes...
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  • Best Ways to Improve Handling Ride Quality of 2026 Jayco Greyhawk
    Hey Bruce, yeah that doesn't sound fun at all! The biggest improvement you can make to the handling of your 2026 Jayco Greyhawk will be with a rear sway bar like the part # RM-1139-147 which is a confirmed fit for your motorhome. I would start there and if you decide you want more improvements go with a front bar like part # RM-1139-189. Lastly a steering stabilizer part # ST98MR. You can do all three for a huge improvement but the order I mentioned them will give you the biggest results first.
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  • Recommended Steering Stabilizer for a 2026 Entegra Odyssey 24B Built on a 2025 Ford E-450 Chassis
    Hey Randy, congrats on the new motorhome. Your 2026 Entegra Odyssey 24B was built on a 2025 Ford E-450 Chassis so the Safe-T-Plus Steering Stabilizer with Mounting Hardware Kit item # ST98MR will indeed fit. This kit comes with the stabilizer, mounting brackets, and all necessary hardware. How are you liking your new motorhome? You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
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  • Availability of Safe T Plus Steering Stabilizer that Fits 2025 Winnebago Class C E-450 Chassis
    Hey Gaylan, we have those two part numbers with our # ST39VR and the mounting kit part # ST66VR but we haven't had a chance to kit them together yet. These would be the two correct part numbers to complete a Safe T Plus steering stabilizer for your 2025 Winnebago Class C built on a Ford E-450 chassis. What's the handling like for your RV?
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  • Recommended Steering Stabilizer for a 2021 Coachman Concord 300TS Class C Built on a Ford E-450
    Hey John. We have three steering stabilizers that fit your 2021 Coachman Concord 300ts class C motorhome that was built on a 2020 E-450 chassis. I have listed them below in the order I recommend them: 1. Safe-T-Plus Steering Stabilizer with Mounting Hardware Kit item # ST98MR 2. Roadmaster Reflex RV Steering Stabilizer with Mtg Brackets item # RM-RBK24-RSSC 3. Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets item # RM47MR What kind of issues are you having that has you...
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  • Recommended Sway Bars and Steering Stabilizer for a 2025 Thor Chateau 27P on a Ford E-450 Chassis
    Hey Rick. Your 2025 Thor Chateau 27P was built on either a 2023 or 2024 Ford E-450 class C chassis. I saw you were looking at sway bars so I went ahead and found the parts you'll need. The recommendations I listed below fit both the 2023 and 2024 model years: Front Sway Bar - Roadmaster Front Anti-Sway Bar w/ Adjustable End Links item # RM-1139-189 Rear Sway Bar - Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter item # RM-1139-147 Steering Stabilizer - Safe-T-Plus Steering Stabilizer...
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  • Steering Stabilizer and Suspension Enhancement for 2022 Thor Chateau M25 350
    Hey Robert, we do have steering stabilizers that fit your 2022 Thor Chateau M25 350. We have the Roadmaster Exact Center part # RM47MR and the Safe-T Plus part # ST98MR which will both work great. Neither is a bad option but I really like the Safe-T Plus as since we know it works great and all of the components of the stabilizer are covered so there's less risk of it getting damaged. I prefer the SumoSprings kits over the Timbrens as the Timbrens are known to be a bit harsher. So for the...
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  • What Steering Stabilizer Do You Recommend for a 2015 Ford E450 3010DS Forest River?
    Hi James, The Safe-T Plus Steering Stabilizer part # ST98MR you were looking at is a great choice for your 3010DS Forest River! The Safe-T-Plus has had some great feedback and people prefer the feel of it over other systems when driving for keeping the motorhome straight on the road and reducing driver fatigue. It's a super easy bolt-on installation and will make steering easier and safer in the event of any weather or tire failures. It also comes with a nice lifetime warranty, so you'll...
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  • How Does Safe-T-Plus Steering Stabilizer For E350 E450 Compare To Roadmaster Reflex?
    Ben, both aim to keep your steering centered, but the # ST98MR uses a sealed hydraulic piston with a calibrated spring instead of external coils. That gives you smoother centering and better control when the road surface changes. It’s also fully maintenance-free and tuned specifically for the 2007-up E-350/E-450 steering gear. If you already have a Reflex and still feel like the wheel floats, the Safe-T-Plus is the logical upgrade.
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  • How To Stop Wandering On Highway When Semi Passes 2018 Thor Chateau 28Z Class C RV
    Mike, you’ll want to start with the Safe-T-Plus # ST98MR. Sway bars reduce body roll, but they don’t fix steering wander. The # ST98MR keeps the wheel centered automatically, so those truck blasts or gusty days won’t push you around. It’s the most noticeable handling upgrade you can make on an E-450 based on the issue you are describing. Once installed, you can always add heavier sway bars later if you want to tighten the feel even more, but I'd do this first and see how you like it as...
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  • Sway Bars and Steering Stabilizer Recommendation for 2018 Thor Majestic 28A
    Hey Richard, since your 2018 Thor Majestic 28A is a Class C motorhome built on a Ford E-450 chassis the correct rear sway bar you would need would be the part # HE78RR, for the front # HE26GR, and then for a steering stabilizer part # ST98MR and you'd be set! This will make a huge improvement in handling and stability. How would you describe the handling now?
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  • How To Keep Forest River Sunseeker Class C RV Straight On Road When Flat Towing A Car
    Randy, absolutely. Towing adds tongue weight that can make your front end feel light. The Safe-T-Plus # ST98MR keeps the wheel centered so that weight shift doesn’t translate into wander. It’s a smart upgrade before your next trip - the improvement in control while towing is huge. Once you try it, you won’t want to drive without it. Which spots are your favorite to travel to?
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  • How To Fix Steering Play On Highway When Driving Class C RV 2023 Winnebago Minnie Winnie E450
    Sharon, you’re spot-on with the Safe-T-Plus # ST98MR for that E-450. It’s tuned for 2007-up cutaway chassis and bolts right on with the included bracket kit. It’ll take out that loose, “drifty” feeling you get when trucks pass or the road crown changes. Once centered, you’ll steer with fingertip pressure instead of constant correction. Have you upgraded your front shocks yet? A stabilizer like this works best when everything else up front is solid.
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  • Recommended Safe-T-Plus Steering Stabilizer for a 2024 Entegra Odessey 24B on a E-450 Chassis
    Hey Scott, welcome back! The Safe-T-Plus Steering Stabilizer with Mounting Hardware Kit item # ST98MR is exactly what you need for your 2024 Entegra Odessey 24B on a E-450 chassis. This kit includes the steering stabilizer and the custom mounting brackets. The Safe-T-Plus Steering Stabilizer item # ST98MR is going to give you center-point tracking with your steering wheel. It'll keep your motorhome going straight by reducing wandering, oversteering, and sway when you get hit by wind or...
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  • Upgrade To Keep Ambulance conversion 2022 E450 Tracking Straight On Road - Wanders When Loaded
    Kara, the best fix is the Safe-T-Plus # ST98MR. When the rig’s loaded, side winds and road grooves grab the steering more - the stabilizer counters that automatically. It’s a safety upgrade a lot of emergency and utility fleets run because it keeps control consistent no matter how the weight shifts. Installation’s straightforward, and you can feel the benefit immediately.
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  • How Can I Make 2008 E450 Thor Motorhome Less Fatiguing Driving On Long Trips?
    Howard, start with a steering stabilizer - the Safe-T-Plus # ST98MR is built for your chassis. It automatically centers the wheel, so you’re not fighting to keep it straight for hours. Pair it with a proper alignment and good tire pressures, and it’ll feel like a new coach. It’s one of those upgrades you notice the second you hit the highway. What model Thor do you have?
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  • Will ST98MR Steering Stabilizer Bar Work For 2015 Coachmen Leprechaun 319 MB On Ford E450?
    Yes, Alex - the # ST98MR is the exact fit for your E-450 cutaway chassis. It mounts using existing hardware, no drilling or welding. You’ll notice the biggest improvement when driving in crosswinds or on grooved pavement. After installation, take it for a short drive and fine-tune the centering point - once set, it’s maintenance-free. Do you usually tow a car behind your Leprechaun? That extra weight makes this upgrade even more noticeable.
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  • Hellwig Sway Bars and Steering Stabilizer Recommendation 2017 Coachmen Freelander 21RSF
    Hey Jason, welcome back! For the Hellwig rear sway bar you would want the part # HE78RR and then for the front part # HE26GR. Then for a steering stabilizer the Safe-T Plus part # ST98MR would be what I would recommend. With all of this installed your Freelander will handle totally different and be a lot more fun to drive! How would you describe the handling now?
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  • How To Keep Steering Straight On 2016 E450 Shuttle Bus That Pulls After Hitting Bumps In Road
    Pastor Jim, that’s a classic case where a steering stabilizer like the Safe-T-Plus # ST98MR makes all the difference. It applies equal hydraulic force to return the wheel to center after bumps, keeping the driver from constantly correcting. It’s a simple bolt-on and doesn’t interfere with normal steering. Once centered, you’ll notice straighter tracking and less driver fatigue on long routes. How long do you normally drive in one shift? Do you go on the highway a lot or mainly in town?
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  • Is Steering Stabilizer Needed With Aftermarket Shocks On 2021 Jayco Greyhawk?
    Absolutely, Derrick. The # ST98MR works great alongside upgraded shocks - in fact, that’s a perfect pairing. The shocks control bounce, and the Safe-T-Plus handles steering stability. Together they make the Greyhawk feel like a big SUV on the highway instead of a box truck or mobile living quarters. Just install the stabilizer, center it, and you’re done - no adjustments needed later. How far do you normally go on each trip? Other folks reading this, what do you use for keeping steering...
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  • Recommended Air Bags, Steering Stabilizer, and Sway Bars for a 2019 Minnie Winnie on a E-450 Chassis
    Hey Rob, thanks for the information! For your 2019 Winnebago Minnie Winnie, you're going to need the Firestone Ride-Rite Air Helper Springs item # F22ZR. I checked with Firestone and these are confirmed to fit the 31G and 31K models that are just over 30' long. They have a 5,000 lbs capacity to help support your rear suspension. When it comes to cutaway chassis like yours it's best to go off of the motorhome's specific model for fitment. The manufacturer's like to put lines and all kinds...
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  • 2014 E-350 Cutaway Delivery Van Is Hard To Keep Straight On Highway When It's Windy
    Yes Carlos, you'll want the Safe-T-Plus # ST98MR steering stabilizer, designed exactly for that E-350 (and E-450) chassis. The stabilizer acts like a shock absorber (better than other options on the market) for your steering, holding the wheel steady against gusts and uneven road crowns. Most fleet users say it cuts down on driver fatigue immediately. You can install it in under two hours using hand tools. What do you think? Can you handle this install?
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  • Will 2025 Ford E-Series Factory Stabilizer Be Removed To Install Safe-T-Plus Steering Stabilizer
    Hey Mark, welcome back! Yes, that factory damper will be removed to install the Safe-T-Plus Steering Stabilizer # ST98MR. See the photos below. I also went ahead and linked the instructions and an installation video further down on this page for your reference. This is confirmed to fit E-350 and E-450 Class C motorhomes. What kind of motorhome do you have?
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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Steven C
Installed by:
Steven C
Employee Mary K
Edited by:
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Employee Daron K
Updated by:
Daron K
Employee Alex H
Updated by:
Alex H
Employee John S
Video by:
John S
Employee Bradley B
Video by:
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Written by:
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Employee Kevin C
Test Fit:
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