bing tracking image
  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Jounce-Style Springs
  4. Front Axle Suspension Enhancement
  5. Standard Duty
SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle

SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle

Our Price: $709.99
You Save: $41.47
Vehicle Suspension

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

This item qualifies for Free Shipping
Shipping Weight: 22 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
3,000-lb Capacity. These maintenance-free microcellular urethane springs upgrade your vehicle's front suspension. Each 2-piece spring connects at top and bottom and provides unlimited suspension travel and movement for a smooth, comfortable ride. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle part number SSF-173-40-2 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (399)
  • Q & A (0)
  • Photos
  • Why etrailer?

SuperSprings Intl Vehicle Suspension

  • Jounce-Style Springs
  • Front Axle Suspension Enhancement
  • SuperSprings Intl
  • Standard Duty

3,000-lb Capacity. These maintenance-free microcellular urethane springs upgrade your vehicle's front suspension. Each 2-piece spring connects at top and bottom and provides unlimited suspension travel and movement for a smooth, comfortable ride.


  • Helper springs upgrade your vehicle's front suspension for improved driver control and comfort
    • Support heavy front-end loads (like slide-outs) to keep your vehicle level
    • Help to absorb bumps and shocks
    • Minimize sway
  • 2-Piece design provides unlimited suspension travel and movement for a smoother ride when unloaded or on rough terrain
  • Progressive load control - springs compress according to the weight of your cargo
    • Lighter loads - springs compress easily at first for soft engagement and a less bumpy ride
    • Heavier loads - springs compress by as much as 80 percent for support
  • Springs work independently from each other to compensate for off-center loads and reduce body roll during sharp turns
  • Durable microcellular urethane
    • Works in temperatures from -25 F to 200 F
    • Resists damage caused by oils, road salts, and UV rays
  • Minimal lateral expansion - springs expand and compress vertically instead of to the sides so they aren't easily damaged when operating in tight spaces
  • Maintenance-free - no tubing to run or air pressure to monitor like with air springs
  • Easy, bolt-on installation
  • 2 Jounce-style springs and necessary hardware included
  • Made in the USA


  • Weight capacity (at 50-percent compression): 3,000 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee

Front Suspension Support

SumoSprings helper springs are great for RVs or motor homes that have slide-outs. Slide-out rooms and other heavy front loads can cause front-end sag as your factory suspension compresses under the weight of the load. This means that the front axle is trying to support not only the extra load but also the motor home's weight. And because there is less weight on your rear axle, your rear tires make less contact with the road, which causes problems with traction, steering, and braking. SumoSprings upgrade your vehicle's factory suspension to level your vehicle, improve driving performance, and keep your ride comfortable.

SumoSprings Rebel installed showing separation of 2-piece springs

The innovative 2-piece design of these Rebel springs allows for unlimited suspension travel. This means that there will be more movement in your suspension when you're unloaded or off-roading, which makes your ride smoother and more comfortable.

Each spring has 2 pieces. One piece attaches to the frame of your vehicle. And the other piece attaches to the axle. The pieces come together to provide support when you are carrying a heavy front load. When you're unloaded, they separate so that they don't restrict the movement of your suspension. The closed-cell urethane springs also act like a shock absorber to dampen road vibration.

SumoSprings compressing under load

SumoSprings provide progressive load control - the more you load them, the stiffer they become. With a lighter load, the springs will compress easily for soft engagement and a less bumpy ride. The springs can also compress by as much as 80 percent to support a heavy front load and to help your factory suspension bear up under the load. This evens out the weight, which levels your vehicle and ensures that your rear tires are making better contact with the road. A level ride means that you have improved driving control, ensures safe headlight aim, and helps to minimize sway. The springs also support your factory suspension, which helps prevent sagging and reduces bottoming out.

The springs work independently from one another to support each side of your vehicle. This action helps to reduce body roll when you make a sharp turn. This also helps compensate for an off-center load.

Durable, Custom-Fit Springs

These microcellular urethane springs are tough. They resist abrasion, oil, salt, and UV rays that can more quickly wear out other springs, and they perform well in temperatures ranging from -25 F to 200 F (-33 C to 93 C).

SumoSprings expand and compress vertically with minimum expansion to the sides, so they won't be damaged by nearby mechanical parts, and they fit safely into tighter spots. And unlike air springs, SumoSprings require no maintenance or adjustment.

This kit comes with custom-fit brackets that are designed to easily bolt onto your vehicle.

SSF-173-40-2 SuperSprings Sumo Springs Rebel Front Vehicle Suspension Kit for Motor Homes - 2-Piece

Item # SSF-173-40-2

Installation Details SSF-173-40-2 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle - SSF-173-40-2

Average Customer Rating:  4.8 out of 5 stars   (399 Customer Reviews)

3,000-lb Capacity. These maintenance-free microcellular urethane springs upgrade your vehicle's front suspension. Each 2-piece spring connects at top and bottom and provides unlimited suspension travel and movement for a smooth, comfortable ride.


Purchased the SumoSprings Rebel Helper Springs for my 2021 Tiffin Open Road Allegro. Installation was not difficult. The ride quality has improved. Previous jarring rough pavement bounces are substantially reduced.


Not nearly as good as the old 1 piece front SUMO SPRINGS. Two piece does not control front rock &roll, nor lean on curves; lost 50% of the control I had w/ the one piece.


One year ago I installed Sumo Springs front and rear on my class A motorhome. This upgrade is the best suspension add on for improved sway control and overall handling. etrailer helped me make the proper choice based on overall vehicle weight and specific chassis. Fast shipping and fair pricing.

2018 Ford F-53

I really like the improved ride that these SumoSprings made in the ride of my motorhome. I changed out the old style Sumos for these two piece Sumos and would definitely do it again. It doesn't necessarily take away the bumps but it makes them smoother or not as hard of a bump. Also James was very helpful and easy to work with while placing my order and kept me informed on the status of my order.


Great product easy to install

Ed - 09/10/2021


Fast delivery. Clear instructions. Watch U-tube videos before starting to aid you. I'm a DIY guy, was able to complete om my own.


Product came in within 3 days or so. Bought SUMO SPRINGS and a steering stabilizer for my 38’ Gas Motorhome and they work wonders. Highly recommed getting these items. . Feels like a different RV. 3rd time or so that I have bought from these guys, always came thru. Happy customer. And I installed front/back sumo springs and stabilizer by myself in 2hrs.


Great product, good service and relatively easy to install with included instructions.


I installed the sumo springs. I followed the directions that came in the box and the video on the web site were very helpful. It took me about 2 hours to install. I am hoping that these springs will help take some of the rough ride out of our motor home as the website and many other users have claimed. I am looking forward to testing them out.


Sumo springs arrived today. Very good quality product, straight forward installation took about an hour and a half to install on 2018 Bounder 35p.Have pictures of stock bump stop and new springs, no comparison, installed springs and have pictures with jacks up and jacks down. Only reason I didn’t give them a five star rating is I haven’t driven the motor home yet.




These made a HUGE difference in how our 2020 Tiffin 34PA drives down the highway! VERY MUCH WORTH THE COST.


I can’t believe how much these have helped the sway and control of the motor home. These are a must for the Ford F53 chassis.

2019 Ford F-53

The wrong part was sent.

We recently sent you a new Rebel Custom spring set and were wondering if you had any feedback about the product for other shoppers? We look forward to hearing from you.
-- Etrailer Expert Jenny N - 08/08/2022


Excellent product. I have a 2018 Thor motor home on the Ford chassis. After purchasing it and driving it 100 miles home in sustained 40 mile mph winds, I was starting to regret buying it. Even without wind, it was a handful to drive. I purchased the sumo spring for the front and rear. The change it the handling was way better then I expected. Even in high winds. Nothing will stop all the effects of the wind on a motor home, but I can now drive it 70 mph with confidence. The biggest change was with the side to side rocking. Driving on uneven lanes and on two lane roads with out shoulders is no longer a problem. I installed them myself without removing the tires. You have to use a right angle drill. It took me 5 hours to do it, but I’m 60 years old and slow. I plan on doing other improvements like steering stabilizer and track bar. Adding the sumo spring is the best thing anyone can do to improve handling. I actually enjoy driving my motor home now.

It worked as expected. Made motor home safer and less stressful to drive.
Allan - 04/26/2020


Easy to install, looks great. The drive definitely improved


Installed Sumo Springs on the front and back of our Precept and have to say they helped control front to back and also side to side sway.


Drove our 38' class A gas coach for 6 months prior to installing Sump Springs. World of difference. Pulling from a parking lot to flat road used to involve 3 or 4 rock's left to right. That is gone. The porposing on the freeway is much better also. Overall feels more stable. Still shutters and has a truck like ride on rough roads and bridge abutments.


Great combined with front and rear sway bars 2014 class A gasser rode like a dream


I added Sumo springs to the front and rear of my 2020 Georgetown GT7 motorhome about a year ago....WOW what a difference and a great spend. I paid a truck mechanic to do the work and it took about 1 hour max to do the front....After watching him do the front i could have easily did the same. great investment!


I installed these on my motorhome to help minimize body sway and they make a big difference. The ride is more stable and predictable.
The are pretty easy to install with easy to follow directions.
Ordering from etrailer is easy and delivery is as advertised.


Got delivery in a timely manner. All items were as advertised and installation hardware was complete.
The Sumo Springs and heavy duty sway bars made a SIGNIFICANT difference in the ride and handling.
Would have no problem ordering from this company again. They were also very helpful and patient on the phone.

Sway bars and springs are still working great. They are a necessity for my Ford F-53 chassis.
Shel - 07/13/2020


Definitely worth the investment . Helps on braking and overall ride

2017 GMC Canyon

Totally transformed our 2017 Newmar Canyon Star ride. Best investment ever.


I had the both the front and rear sumo Springs installed on my 2016 Newmar Canyon Star, by the crew at Etrailer.
The improvement in the handling was noticeable the minute I hit the road. The most noticeable effect was the reduction in the top heavy sway when cornering.
It also seems to have reduced the effect of passing semi's .
I would definitely recommend this product to anyone who has a Ford F53 chassis on their motorhome.

Show More Reviews

See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Front Helper Springs for a 2015 Thor ACE Motor Home
    Since your Thor ACE is built on a 2015 Ford F-53 chassis then there are front helper spring options that will fit. I have included a link to them for you. For SumoSprings specifically if your model is rated for 24K to 26K GVWR then you can use # SSF-173-40-2. If your RV is built on a different chassis let me know what it is and I can determine if we have anything that will fit.
    view full answer...
  • Can the Wheels Be Turned for Clearance While Installing the SumoSprings on a Georgetown Coach
    Yes, you can turn the wheels on your Georgetown motorhome in order to gain more room when installing the SumoSprings Rebel Custom Helper Springs part # SSF-173-40-2. If you need help with installation we actually have a few videos on similar motorhomes which should help and I have attached these for you.
    view full answer...
  • What is Advantage to SumoSprings that are Two Piece Instead of One Piece
    The two piece design like the part # SSF-173-40-2 does allow the suspension to work better in the top of its travel since it can allow the sections to separate uninhibited. A one piece design would work to prevent the suspension from topping all the way out which could turn into a harsher ride quality. This would make bigger bumps on highway feel sharper since the suspension can move as much.
    view full answer...
  • Are There Air Bags for the Front of a 2018 Ford F-53 with 24K GVWR
    I do have an option for you but there are no air bags that fit the front of a 2018 Ford F-53 with 24K GVWR. I don't have specifics on what the issue is exactly but odds are there is interference issues they simply cannot work around. I cannot advise on modifications either. I am sure if there was a workaround the air bag manufacturer would have taken the time to design a kit that works, they want it to fit just as much as you do after all. Instead, I recommend the SumoSprings Rebel Custom...
    view full answer...
  • SumoSprings That Will Fit F-53 Chassis With 7.3L V8 Engine
    Let me see what I can figure out for you, I have the solution linked below: **SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle # SSF-173-40-2. There was a generation change in the F-53 chassis, Ford changed the motor to the 7.3L V8. When they did this they decided they wanted to change the actual frame too. This is the issue for you. The part you have is designed for the last generation. You will need the SumoSprings linked above.
    view full answer...
  • Troubleshooting Lower Bracket Hook Attachment on the SuperSprings # SSF-173-40-2
    Looking at the installation tech tips, the SumoSprings Rebel Helper Springs # SSF-173-40-2 comes with a complete bracket and bump stop replacement kit. It is entirely possible that there is still some factory hardware on your 2016 Jayco Precept with a Ford F53 chassis that is blocking the installation of the 512107 lower bracket hook. It is important to note that you need to remove the factory bump stops and corresponding brackets in order to install the # SSF-173-40-2. It is also a possibility...
    view full answer...
  • SumoSpring Suspension Enhancement Recommendation for 2013 Winnebago Sunstar
    Your 2013 Winnebago Sunstar is built on a Ford F-53 chassis so the best Rebel SumoSprings kit is the part # SSF-170-40-2 which matches your 22k capacity.
    view full answer...
  • Recommended Front-Axle Suspension Jounce Spring Kit for 2015 Ford F-53 2WD
    SumoSprings discontinued the kit SSF-180-40-1 for the 2015 Ford F-53 application and replaced it with the 2-piece jounce spring kits # SSF-170-40-2 for vehicles with GVWR of 16K to 22K and # SSF-173-40-2 for GVWR of 24K to 26K. Usually a new spring design relates to changes made by the RV makers who may be installing other OEM equipment.
    view full answer...
  • What Sumo Springs Do I Need for my 2017 Jayco Alante 26X
    We do have a great Sumo SPring option but part # SSF-173-40-2 is not a fit for your 2016 Jayco Alante 26X. These are designed for certain models that are 33-40 feet long. Instead use the SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle part # SSF-170-40-2 these are confirmed to fit your chassis and will install without issue. Check out the attached video for a full installation walkthrough.
    view full answer...
  • Recommended SumoSprings for the Front of 2014 Tiffen Allegro 22K
    The correct front SumoSprings system will be the # SSF-170-40-2. This is designed for the 22K F53 frames.
    view full answer...
  • Best Heavy Duty SumoSprings for a 2016 Fleetwood Bounder 35K
    The SumoSprings Rebel Custom Helper Springs # SSF-173-40-2 will fit the F-53 chassis on your 2016 Fleetwood Bounder 35K but is rated for motorhomes with a GVWR from 24,000 lbs - 26,000 lbs. Since your 35K has a GVWR of 22,000 lbs I recommend going with the SumoSprings Rebel Custom Helper Springs # SSF-170-40-2 instead which is for motorhomes with a GVWR of 16,000 lbs - 22,000 lbs. We are continually trying to update our fit guide to better serve our customers. The reason that we don't...
    view full answer...
  • Can I Get Replacement Hardware for SumoSpring Kit for a 1999 Ford F-53
    You can obtain replacement hardware for the SumoSprings Rebel Custom Helper Springs # SSF-172-40-2 through SuperSprings directly so you can reuse the blue springs that came with your SumoSprings Rebel Custom Helper Springs # SSF-173-40-2, but when I spoke with my contact at SuperSprings he said as far as pricing goes you'll be better off either selling your current kit and putting that towards the 172-40-2 or exchanging your current kit for the one that you need if you haven't been using...
    view full answer...
  • SumoSprings Helper Spring Fit for Winnebago Itasca Sun Cruiser 35P on 2010 Ford F-53 Chassis
    The SumoSprings # SSF-170-40-2 you mentioned works on vehicles with a GVWR up to 22K, so it wouldn't work on the 24K chassis. For your 2011 Winnebago on the 24K F-53 chassis, you'll want to use # SSF-173-40-2 which is designed for a 24-26K GVWR.
    view full answer...
  • Recommended Front SumoSprings For 2000 National Sea View Built On Ford F-53 Chassis
    For your 2000 National Sea View built on the Ford F-53 chassis you actually need the SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle # SSF-172-40-2 instead of the # SSF-170-40-2 you mentioned. This will be the correct model to give you additional support for the front of your motorhome. I included a video of the # SSF-172-40-2 for you to take a look at.
    view full answer...
  • Suspension Springs for a 2014 Tiffin Allegro Motorhome with a 24,000-lb Ford Chassis
    I called Air Lift to confirm, and you are correct in that the LoadLifter 5000 Ultimate Air Springs, part # AL88240, are not compatible with your 24,000-lb chassis. We do, however, have springs that are compatible. They are the SumoSprings Rebel Custom Helper Springs, part # SSF-173-40-2. These jounce-style springs are much easier to install and maintain than air springs, and they react appropriately to different loads (rather than the air springs needing manual adjustment when under different...
    view full answer...
  • Recommended SumoSprings Helper Springs for 2019 Fleetwood Bounder Motorhome on Ford F-53 Chassis
    The recommended SumoSprings helper springs for your 2019 Fleetwood Bounder motorhome built on a Ford F-53 chassis are the SumoSprings Maxim Custom Helper Springs # SSR-187-54-1. These rear axle springs are the only SumoSprings that fit a Fleetwood and do fit all models - the Fleetwood Bounder 33C, 35K, 35P, 36F and 36FP - each of which has a GVWR between 22,000 lbs and 26,000 lbs. For SumoSprings that fit the front front axle there it will depend on your Fleetwood's model. For a Fleetwood...
    view full answer...
  • Recommended SuperSprings SumoSprings for 2009 Tiffin on Ford F53 Chassis
    The SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle # SSF-170-40-2 are a confirmed fit and the two piece design does allow for the full suspension travel to allow your vehicle suspension to work to it's best capacity without limitation, while also enhancing the load support and stability. These are rated for motorhomes from 16,000 to 26,000 lbs. The front springs you mentioned are not found on the manufacturers site. These two piece springs are the only confirmed fit front...
    view full answer...
    Image 1 for
  • SumoSprings Helper Springs for 24K GVWR Fleetwood Class A Motorhome on 2018 Ford F53 Chassis
    For the front axle, you'll need the SumoSprings # SSF-173-40-2 which offers up to 2600 lbs of additional support and is compatible with a 24K GVWR F-53 chassis. If you wanted to go with a rear helper spring option, I'd recommend the SumoSprings # SSR-187-54-1 which fit GVWR from 20-26K and offers up to 7000 lbs of additional support. I've linked to installation videos that you might find helpful.
    view full answer...
  • 2018 Thor ACE 27.2 Sumo Spring and Front Sway Bar Recommendation
    Yes, you can use Sumosprings on an RV that has Roadmaster sway bars and/or a steering stabilizer. The SumoSpring Rebel part # SSF-173-40-2 would fit and work well for you. A front sway bar would help quite a bit as well. For that you'd want the # RM-1139-148 which will help quite a bit.
    view full answer...
  • Can SumoSprings Be Used on Front and Timbrens Used on Back of 2019 Thor Ace Motorhome
    The SumoSprings and Timbrens are very comparable brands and both provide excellent quality. The main difference between the 2 is that SumoSprings tend to have more of a forgiving cushion while the Timbren kits tend to be a bit more stiff - which usually works best for heavy duty applications. There really isn't any issue mixing the 2 brands (one for front and one for back) so I think using the SumoSprings # SSF-173-40-2 for the front of your 2019 Thor Ace 27.2 and then the Timbren Kit...
    view full answer...
  • Is There a Front Anti-Sway Bar for a 2022 Coachman Encore
    I checked with Roadmaster and there are only rear anti-sway bars offered for a 2022 Coachman Encore. That said, the rear is where you'll see the biggest difference so that is what I recommend and the correct one is the Roadmaster Rear Anti-Sway Bar part # RM-1139-149. If you're looking for improvements in the front, I recommend the SumoSprings Rebel Custom Helper Springs part # SSF-173-40-2 which works to improve ride quality by reducing sway and bumps.
    view full answer...
  • 2019 Thor Outlaw 37RB SumoSpring Recommendation for Improving Handling
    Your 2019 Thor Outlaw 37RB is built on a Ford F-53 chassis which is notorious for not handling great. The biggest improvement you'll be able make is with SumoSprings like the part # SSR-187-54-1 for the rear and part # SSF-173-40-2 for the front. These install pretty easily but I attached install videos for both for you to check out to really get an idea what the install will be like.
    view full answer...
  • Best Heavy Duty SumoSprings Suspension Enhancement for a 2018-2019 Fleetwood Bounder 35K
    The best SuperSprings SumoSprings for the Ford F-53 chassis on your 2018 or 2019 Fleetwood Bounder 35K are parts # SSR-187-54-1 for the rear and # SSF-173-40-2 for the front. These are designed for the 26K weight rating of your motorhome and will do an excellent job at not only cushioning your ride but also helping reduce swaying. The rear SumoSprings have a 5,400 lbs capacity while the front have a 2,600 lb capacity which is the highest in both cases for your Bounder 35K. Attached are...
    view full answer...

< Previous
123. . .4

Do you have a question about this Vehicle Suspension?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate vehicle suspension information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Kathleen M
Video by:
Kathleen M
Employee Jonathan Y
Video by:
Jonathan Y
Employee Michael B
Video by:
Michael B
Employee Schuyler H
Video by:
Schuyler H
Employee Cole B
Installed by:
Cole B
Employee Mary E
Written by:
Mary E
Employee Wilson B
Updated by:
Wilson B
Employee Alex H
Updated by:
Alex H
Employee Noah M
Updated by:
Noah M
Employee Shane H
Test Fit:
Shane H
Employee Robert C
Test Fit:
Robert C
Employee Conner L
Test Fit:
Conner L
Employee David F
Test Fit:
David F

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.