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SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle

SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle

Item # SSF-170-40-2
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SSF-170-40-2 - Standard Duty SuperSprings Front Axle Suspension Enhancement
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2,600-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. Lowest Prices for the best vehicle suspension from SuperSprings. SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle part number SSF-170-40-2 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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SuperSprings Vehicle Suspension - SSF-170-40-2

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

2,600-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): 2,600 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-170-40-2 SuperSprings Sumo Springs Rebel Front Vehicle Suspension Kit for Motor Homes - 2-Piece

Installation Details SSF-170-40-2 Installation instructions

This Product Fits The Following Vehicles

Customer Reviews

SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle - SSF-170-40-2

Average Customer Rating:  4.9 out of 5 stars   (138 Customer Reviews)

2,600-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.

- SSF-170-40-2

The Sumo Springs made a big difference in the handling of my 38 ft class A. I had already put Sumo Springs on the rear along with an additional rear anti-sway bar, replaced the front ant-sway bar and added a steering stabilizer. Each item made improvements but the front Sumo Springs had the most impact. So much easier to drive. Installation was very easy and the online videos were helpful. I would highly recommend these. 672241

- SSF-170-40-2
2018 Thor ACE Motorhome

Amazing! Installed Sumo springs on front of a new 2018 Thor 29.4. F53 frame. BEFORE was very unhappy with drive, could feel every imperfection on the road and steering was very unpredictable! AFTER: Dramatically eliminated the rough ride & steering issues . . . don't hesitate to buy these shocks you will be VERY HAPPY! My experience was so good I purchased the next week rear Sumo springs and the steering stabilize shock (much more improvements, but start with the front springs). 561311

- SSF-170-40-2
2011 Thor Motor Coach Hurricane Motorhome

When you look at the bumpstop and all the travel it can go, it makes sense to fill that space with a constant contact chusion, such as the Sumo Spring. I have a 2011 F53 chassis supporting a 32 Class A motothome. 16,000 GVW and no slide. I only installed the fronts to see how they worked. I did it myself and it took about 2 1/2 hours. If I can do it anyone that can work a wrench and understands basic mechanics can do it. I'm 60 and it's a tight space under there and takes some effort, but the jobs not hard, just doing it is hard and uncomfortable. My motorhome would ride very rough on the same roads my car ran smooth. The Sumo Springs were an improvement. They did not solve the rough ride on real poor highway, but on normal rough roads, they were an improvement that will benefit the ride on more roads than not. I now plan to do the rears when I get time. 500303

- SSF-170-40-2
2017 Ford F-53

The SumoSprings item #SSF-170-40-2, for my 2017 Georgetown GT3, with the F53 Ford chassis was very easy to order from etrailer.com and was shipped in a very timely manner. They came with easy to follow installation instruction. Be advised that you will need a 1/2" socket with a 3" extension to insert into the factory bump stop to hold bolt while removing the nut on the drivers side. This is not mentioned in the instructions. You will also need the same socket and extension to remove the bolt on the passenger side. One other note, the nut on the drivers side is a 15mm. Other than the afore mentioned 1/2" socket and the 15mm the only other tool you'll need is a 9/16". About a hour and a half to two hour job. I took the motorhome for a test drive and there is a very noticeably improvement in the ride. Very satisfied with my purchase. Thanks, sumosprings for a great product and etrailer for a great price. 566821

- SSF-170-40-2
2018 Holiday Rambler Admiral XE Motorhome

The installation instructions for both the anti sway bar upgrade and the Sumo helper springs lacked torque values for their fasteners. Both suspension components fit correctly and have improved how our class A motorhome handles. Great service from etrailer. 556109

After a year, I’m still convinced the Sumo Springs was money well spent.
Jim - 08/21/2019


- SSF-170-40-2

Preston did a great job helping me spec in the correct springs for my 2016 Thor Hurricane 27K on a F53 chassis. Placed order with him over phone and received springs two day's later. I just installed them and took Motor home on a test drive around town on bumpy streets and what a difference it made. Drives more like a truck now and less like a boat. I also installed a steering stabilizer spring and did the cheap handling fix to the sway bars. Well worth the time and effort. I did notice that the etralier installation video shows the bottom brackets of the spring installed with the "U" down which is opposite the mfg's printed instructions. I did mine according to the printed instructions cause it seemed to make more sense. Probably no big deal either way. Thanks etrailer. I'll be contacting you guys when ready to do the back end of my motor home. 649992

- SSF-170-40-2
by: 09/30/2020


- SSF-170-40-2


- SSF-170-40-2

My THOR motor coach has the Ford F-53 chassis. I rides like a truck. That should not be surprising as "it is a truck." I purchased and installed these Sumo Springs and even though it will never be "air bag" suspension, the Sumo Spring made a wonderful difference in improving the ride. I would recommend this add on to everyone and as I meet similar motor coaches on the road, I show them the Sumo Springs and I do recommend them. 868931

- SSF-170-40-2

Install went well. All the parts and pieces fit. On line video are helpful. Haven't driven it yet. Will complete review after test drive. 868378

- SSF-170-40-2
2014 Ford F-53

In process of installing nice product photos to follow 867200

- SSF-170-40-2
2016 Thor ACE Motorhome

The SumoSprings were delivered two days early (great) and I started my install. I guess I'm getting older than I thought, it took me a day and a half to actually see the note at the bottom of the Diagram which show the orientation and the direction of the front of the vehicle. After I was clear on the proper install and working over my head and upside down everything actually fit very nice. The Test Drive was very good and the normal bumps that would rattle the contents of the kitchen cabinets was greatly smoothed out. The MH drove straighter and required less back and forth movement of the steering wheel. A big step of improvement. 861991

- SSF-170-40-2
2019 Coachmen Pursuit Motorhome

WOW! What a difference in driving feel on my F53 based class A RV! I anticipate way less driving fatigue... no more tram-lining and sway! 860279

- SSF-170-40-2

The SumoSprings made a big difference in the handling of our motorhome and significantly reduced the body roll. 848977

- SSF-170-40-2

I unpacked everything and it was in good shape. All parts were intact and individually protected with paper. The directions were easily understood and very descriptive with all parts lettered with pictures and corresponded to a part and item #. One portion of the front diagram showing the leaf spring attached to a 90 degree I beam should state that is the axle. At the top of the diagram showing the frame rail, it would help if indicated somewhere we were looking at the outside of the frame rail. Those two things would help orient the viewer to what is being looked at. Also, the note at the bottom that says "Driver Side Front" with an arrow, should be in larger print and bold text. The actual pictures on the back side with the instructions should also say (at least in the first one) "outside of frame rail". To sum things up it took me 3hrs to install the driver's side. Mainly because I broke loose the welded nut on the frame that holds the bump stop and I had a heck of a time getting a socket that fit on it so I could get that darn bump stop off. Having said that, it only took me 45 to 50 minutes to install the passenger side once I knew what I was doing and had all of the tools handy. As a final note, it would be helpful to include a tool list such as 3/8" drive socket wrench with 4" or 6" extension. 13mm and 15mm deep sockets to remove Ford bump stops. Standard 9/16" ratchet wrench and or extra open end/box end 9/16" and a deep 9/16" socket. All of which only need to be 3/8" drive. I look forward to my next trip with the SumoSprings installed. 837245

- SSF-170-40-2

Sumo springs made a nice difference in the way our coach handled corners and overall traveling down the road. No more white knuckles. 830602

- SSF-170-40-2

Sumosprings are definitely top quality. I'm a happy camper now 828568

- SSF-170-40-2
2017 Ford F-53

The product was excellent fo my thor windsport 35m . 827784

- SSF-170-40-2
2015 Forest River FR3 Motorhome

We are so excited our Sumos have arrived! We are having them installed by a local Custom’s installer shop next Wednesday, and we just can’t wait to experience the ride on our 2015 Forest River FR3 30DS! We have pretty much customized everything else inside with a lot of help from etrailer, now thankful they are there for us for the outside stuff as well! 826262

- SSF-170-40-2

Thanks for the fast service. 829201

- SSF-170-40-2

great help 811524

- SSF-170-40-2
2017 Thor ACE Motorhome

Product arrived a day earlier than promised => extra star!! The install videos are amazing; but better, there are also install instructions in the pacakage: the SUMO springs are already on the RV, took about 3 hours ( we needed to move a bracket etc etc). Different rig, joy to drive! Love Etrailer.com! 806212

- SSF-170-40-2

A+ 805536

- SSF-170-40-2
2017 Ford F-53

I installed the Sumo Spring on my class A and they're fantastic. Really smooths out the ride and provides a much more stabile ride. These should be standard equipment on all motorhomes! 805328

- SSF-170-40-2
2013 Itasca Sunstar Motorhome

Parts arrived fast. Had these installed on our Itasca Sunstar 26 HE along with the rear Sumo springs listed for the 26HE. Stability and ride was improved 10 fold. 798323

Show More Reviews

Ask the Experts about this SuperSprings Vehicle Suspension

  • Sumo Springs Versus Timbren Suspension Enhancement For 2019 Jayco Precept 31UL 22,000#
    While both the Timbren Suspension Enhancement System # TFFF53B & # TFRF53A and the SumoSprings Rebel Custom Helper Springs # SSF-170-40-2 & # SSR-180-54-1 are both great solutions for your 2019 Jayco Precept 31UL, there are some differences to take note of. Timbren is a bit more renown in this space and while a very solid product, that strength comes with the tradeoff that the ride quality can be stiff. Made from a rigid rubber construction, it can be less forgiving and this has been...
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  • Recommended Jounce Springs for Two-Wheel Drive 2019 Ford F-53 Chassis
    The jounce springs I recommend for your two wheel drive 2019 Ford F-53 chassis are from SumoSprings, the SumoSprings Rebel for the front axle and SumoSprings Maxim for the rear axle. The reason why the SumoSprings are the best is because they not only work to reduce sway, but also keep your vehicle level and give you a smoother ride. The SumoSprings can do this because they are made of a microcellular urethane which compresses. Each of the springs works independently which is what is...
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  • SumoSprings for a 2018 Forest River FR3 29DS 18000 lb GVWR on a Ford F-53 Chassis
    SumoSprings will definitely help to improve the ride of your 2018 Forest River FR3 29DS. For your Ford F-53 chassis with an 18,000 lb GVWR you want part # SSF-170-40-2 for the front axle and part # SSR-184-40-1 for the rear axle. The two greatest things about about the SumoSprings is that they do not require drilling for the installation and once the installation is complete there is no maintenance that needs to be done. You can also install Front # RM-1139-140 and Rear # RM-1139-146...
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  • Best Way to Reduce Sway in 2011 Forest River Georgetown 280DS on Ford F-53 Chassis
    While you can certainly add the SumoSprings Maxim Custom Helper Springs - Rear Axle # SSR-187-54-1 and SumoSprings Rebel Custom Helper Springs - 2 Piece - Front Axle # SSF-170-40-2 to your 2011 Forest River Georgetown 280DS built on a Ford F-53 chassis, by far the best way to enhance the ride of your motorhome is to add an aftermarket rear anti-sway bar, followed by a front anti-sway bar and steering stabilizer, in that order. The reason these are the best options is because they are...
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  • Recommended Sway Control and Shock Absorption for 2021 Thor Magnitude 35bb with F-550 Diesel
    For your motorhome, the tire pressure should be whatever the manufacturer recommends which should be in the door panel sticker or your owner's manual. It doesn't surprise me that the sway is the biggest issue because that is a very common issue with motorhomes. The Roadmaster Rear Anti-Sway Bar # RM-1139-190 is the correct fit for your chassis and will do the most out of any products to help control the sway and improve the overall ride. The bumps in the road are a frustration, and...
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  • Is Drilling Required to Install SumoSprings on 2018 Winnebago Sunstar 31BE
    The correct SumoSprings Custom Helper Springs for your 2018 Winnebago Sunstar 31BE (that features an 18,000 pound GVWR), which is the part # SSF-170-40-2 for the front axle and # SSR-184-40-1 for the rear axle, will not require any drilling during installation. These are complete bolt-on applications that will simply replace the factory bump stops on the Ford F-53 chassis. I have attached a couple short video demonstrations along with the written installation manuals for these kits...
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  • Correct SumoSprings and Roadmaster Sway Bars for 2019 Georgetown On Ford F-53 Chassis
    The correct SumoSprings Custom Helper Springs for a 2019 Forest River Georgetown On Ford F-53 Chassis is part # SSF-170-40-2 for the front and part # SSR-187-54-1 for the rear. The correct Roadmaster Anti-Sway Bar is part # RM-1139-140 for the front and part # RM-1139-149 for the rear. The Koni FSD Damper Set is not something we carry unfortunately.
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  • How to Improve Handling and Ride of 2018 Jayco Precept 35S
    For improving the ride quality of your 2018 Jayco Precept 35s the best solution is to first go with an aftermarket rear sway bar. For that we have the Roadmaster part # RM-1139-149 which is a confirmed fit and will work well. This minimizes sway and in doing so improves overall stability and driveability. This will make the biggest improvement to your RV. The next biggest improvement will be a front sway bar. For that you'd want the part # RM-1139-140. Typically with these two sway bars...
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  • Suspension Enhancement That Fits the 2018 Thor ACE 27.2 GVWR 16000 on Ford F-53 Chassis
    I think I can help make some confirmations for you and we'll go one-by-one on fits for your 2018 Thor ACE 27.2 with a 16,000 lb GVWR built on a Ford F-53 chassis. - Roadmaster Rear Anti-Sway Bar for Motorhomes # RM-1139-149 is NOT a fit as it is designed for vehicles with a chassis GVWR of 22,000, 24,000, or 26,000 lbs. Instead you would need the Roadmaster Rear Anti-Sway Bar # RM-1139-146 (assuming your Thor is less than 34 feet long). - Roadmaster Front Anti-Sway Bar for Motorhomes...
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  • Comparing the Red and Yellow Reflex Steering Stabilizers for a 2018 Forest River Georgetown GT3
    The Roadmaster Reflex Steering Stabilizer that is painted red is simply the new model whereas the yellow ones were the older model. There really is not much difference between them save for the paint color. For your 2018 Forest River Georgetown GT3 you will want to use part # RM-RBK22-RSSA if you have a 22,000 lb GVWR or part # RM-RBK25-RSSA if you have a 26,000 lb GVWR. Please note that each kit comes with a specific bracket for your motor home so if you already have the older yellow...
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  • Heavy-Duty Helper Springs That Fit 2019 Fleetwood Bounder 35K Motorhome
    The helper springs that fit your 2019 Fleetwood Bounder 35K motorhome (built on a Ford F-53 chassis) are the following: - Front Axle: SumoSprings Rebel Custom Helper Springs - Front Axle # SSF-170-40-2 - Rear Axle: SumoSprings Maxim Custom Helper Springs - Rear Axle # SSR-187-54-1 These springs are going to do a really good job of helping absorb road shock and reduce that side-to-side sway that is so common on rigs like yours. I have added a link to a video install of the rear...
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  • Correct SumoSprings For A 2019 Coachmen Mirada On A F-53 Chassis
    For your Class A 2019 Coachman Mirada, the correct SumoSprings are different for the front vs. the rear axles of your Mirada. For the rear you need part # SSR-187-54-1, while for the front axle you would need # SSF-170-40-2. I've added links to video reviews and installs of both for you to take a look at.
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    For your 2016 Forest River FR3 28DS, I recommend the SumoSprings Rebel Custom Helper Springs # SSF-170-40-2 for your front axle. These springs are made for models ranging from 16,000 to 22,000 lbs. These springs will mount both on top and bottom but are not connected. They will absorb the road shock, but will also allow full axle movement so you will have the best steering ability and traction. For the rear, I recommend the SumoSprings Maxim Custom Helper Springs # SSR-187-40-1....
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    We do have the correct SumoSprings suspension enhancement for your 2015 Thor ACE 30.1 motorhome, though not both part numbers you mentioned will fit. The front and rear SumoSprings that fit your Thor are: - Front Axle: SumoSprings Rebel Custom Helper Springs # SSF-170-40-2 - Rear Axle: SumoSprings Maxim Custom Helper Springs # SSR-187-40-1 These springs are going to do a really good job of helping you maintain control of your rig and reduce the back-and-forth sway that can make...
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  • Front and Rear Helper Springs/Suspension Enhancement for a 2011 Fleetwood Storm
    It looks like your 2011 Fleetwood Storm was built on the Ford F-53 chassis. It the RV has a gross weight rating of 16,000 to 18,000 pounds then for the front use # SSF-170-40-2. For the rear you could use # SSA41 or # SSR-187-40-1. For a 20K to 22K pound chassis capacity use # SSF-170-40-2 for the front. For the rear you can again use # SSA41 or # SSR-187-54-1. And for chassis capacities ranging from 24K to 26K use # SSF-173-40-2 for the front. For the rear you can use # SSA41 or...
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    The correct SumoSprings helper springs for your 2021 Forest River FR3 30DS built on a Ford F-53 chassis are the following: - Front: SumoSprings Rebel Custom Helper Springs # SSF-170-40-2 - Rear: SumoSprings Maxim Custom Helper Springs # SSR-187-40-1 The SumoSprings are going to do a superb job of reducing sway, keeping your motorhome level, and giving you a smoother ride.
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  • Front Suspension Enhancement Recommendation for a 2013 Ford F-53 Thor Ace Motorhome
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  • Correct Front Axle SumoSprings for a 2019 Jayco Alante 29S Motorhome
    According to my research your 2019 Jayco Alante 29S is built on a Ford F-53 chassis with a GVWR of 18,000 lbs. Since this is the case the correct SumoSprings for your front axle is part # SSF-170-40-2. Attached is an installation video of these being installed on a 2018 F-53 chassis that you can reference. If you are just starting to add suspension enhancement to your Jayco Alante then I actually recommend installing SumoSprings on the rear first with part # SSR-184-40-1 because you...
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  • Recommended SumoSprings for a 2018 Thor ACE Motorhome 29.3
    The SumoSprings that are confirmed to fit your 2018 Thor ACE motorhome 29.3 is part # SSF-170-40-2. These have a 2,600 lb weight capacity and will do a great job at supporting your current suspension. Please note that these will not increase the weight rating of your motorhome. I have attached a video of us using these on our test course as well as an installation video of us putting these on a 2018 Thor Windsport motorhome for you to reference.s
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  • Front and Rear SumoSprings Jounce Springs for 2015 Winnebago Sightseer 33C on F-53 Chassis
    The Winnebago website shows a gross vehicle weight rating (GVWR) of 22,000-lbs for the Sightseer 33C. So, for your Winnie's 2014 Ford F-53-base chassis you can use SumoSprings front-axle kit # SSF-170-40-2. This is a full kit with both top and bottom brackets; it replaces the factory bump stops. For the rear you can use kit # SSR-180-54-1.
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  • Front and Rear SumoSpring Recommendation for 2017 Winnebago Sunstar 29VE
    For the front axle you'd want the SumoSpring kit part # SSF-170-40-2 which is a confirmed fit for your 2017 Winnebago Sunstar 29VE then for the rear you'd want the part # SSR-187-40-1 which is also a fit. Both of these are setup for an 18k Ford F-53 chassis.
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  • Will the SumoSprings Part # SSR-187-54-1 Fit a 2017 Forest River FR3 32DS
    The correct suspension enhancements you will want to use are the SuperSprings Custom Suspension Stabilizer and Sway Control Kit part # SSA41 for the rear axle and the SumoSprings Rebel Custom Helper Springs part # SSF-170-40-2 for the front axle. The SuperSprings will not interfere with the HVAC cover that you are referring to as it does not attach to the frame rail like the SumoSprings Rebel Custom Helper Springs part # SSR-187-54-1. The reason that the rear axle SumoSprings are listed...
    view full answer...
  • Which SumoSprings fit 2016 Forest River FR3 28DS on Ford F-53 Chassis?
    Your 2016 Forest River FR3 28DS was built on a Ford F-53 chassis and has a GVWR of 18,000 lbs. The SumoSprings you need for your front axle are the SumoSprings Rebel # SSF-170-40-2. For your rear axle you need the SumoSprings Maxim # SSR-184-40-1. These springs will support your Forest River's suspension and absorb the shock that an RV can encounter; they will also minimize the amount of sway you experience. The springs will compress according to the weight of your cargo and work...
    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...
  • SumoSprings Recommendation for 2016 Newmar Bay Star Sport 3306 on Ford F-53 Chassis
    Thanks for all the info on your RV! That makes my job pretty easy! For the front axle the SumoSpring kit you'll want is the part # SSF-170-40-2 and then for the rear you'll want the part # SSR-187-54-1.
    view full answer...
  • SumoSpring Recommendation for 2018 Winnebago Vista 27PE
    For your 18k 2018 Winnebago Vista 27PE the correct Sumosprings for the front are the part # SSF-170-40-2 and then for the rear # SSR-184-40-1 like you mentioned. This will give you a much more stable ride quality on your RV when towing the CR-V and when not towing it as well.
    view full answer...
  • Sumo Springs Fit Recommendation for 2017 Winnebago Vista
    For your 2017 Winnebago Vista the correct Sumosprings for the front are the part # SSF-170-40-2 and then for the rear # SSR-184-40-1. We don't have a list of local shops for you to use for the install, but if you find a local RV shop they'll have a garage for projects like this that would easily take care of it.
    view full answer...
  • What Are the Correct Front and Rear SumoSprings for a 2019 Winnebago Intent 29L
    The best set of SumoSprings Rebel Custom Helper Springs for your 2019 Winnebago Intent 29L on a Ford F-53 Chassis is part # SSF-170-40-2 for the front and the best set of SumoSprings Maxim Custom Helper Springs is part # SSR-184-40-1 for the rear. These kits both have the correct springs for the 18,000 GVWR of your motor home so they will perform the best. I have attached sample install videos for you as well.
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Info for this part was:

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

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