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1984 Cadillac Seville
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SumoSprings Solo Custom Helper Springs - Rear Axle
Part Number: SSR-206-54
In Stock
$309.99
1984 Cadillac Seville
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- Reviews (2551)
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SuperSprings Intl Vehicle Suspension - SSR-206-54
Highlights
- Custom Fit for Your Vehicle: Mounts to existing attachment points
- 2,800-lb Load Support: Levels your ride and steadies handling when towing or hauling heavy weight.
- No Maintenance Needed: No air lines or pressure checks so you can tow without upkeep or adjustments.
- Smoother, Safer Ride: Cushions bumps and limits sway for more control on uneven or rough roads.
- Progressive Load Action: Compresses softly for light loads and firms up to 80% under heavy weight.
- Durable Urethane Build: Handles -25 F to 200 F and resists oils, road salt, and UV for long-term reliability.
Features to know about
Stay Level and Confident: 2,800-lb Rear Suspension Support
When you’re towing or hauling a heavy load, rear-end sag can throw off your steering and braking. These SumoSprings Solo Custom Helper Springs add up to 2,800 lbs of rear suspension support at 50-percent compression to keep your ride level and steady. They help your factory suspension share the weight, even out your load, and keep your front tires planted for better control and safer headlight aim.
Smooth Out the Rough Stuff: Progressive Load Control
Bumps, dips, and uneven pavement don’t have to shake you around. The microcellular urethane springs compress progressively depending on the load. With lighter cargo, they engage softly for a smoother ride. Under heavy weight, they can compress by as much as 80 percent to give solid support and tame harsh bounce or sway. That means a steadier ride whether you’re running empty or fully loaded.
Stay Steady in Crosswinds and Turns: Independent Spring Action
When a curve or crosswind tries to push you off line, these springs work independently on each side to keep your vehicle planted. They help reduce body roll through turns and compensate for off-center loads that can make one side squat more than the other. The result is better balance, less rocking, and more control when conditions aren’t ideal.
Rely on Tough, Maintenance-Free Design
Built from high-density microcellular urethane, these helper springs handle temperatures from -25 F to 200 F and resist damage from oil, salt, and UV rays. They compress vertically with minimal side expansion so they fit safely in tight spaces without rubbing nearby parts. There’s no tubing or air pressure to monitor—just a simple, no-drill installation that’s ready for years of steady performance without maintenance.
Specs
Weight and Capacity
- Weight capacity (at 50-percent compression): 2,800 lbs
Warranty
- Warranty: Limited lifetime warranty
- Satisfaction guarantee: 30-Day satisfaction guarantee
SSR-206-54 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Vans
Replaces SSR-206
This Product Fits The Following Vehicles
- 2014 - 2019 Roadtrek 190-Popular Motorhome Popular
- 2013 - 2017 Roadtrek 190-Popular Motorhome Popular - 2 Wheel Drive
- 2013 - 2019 Roadtrek 210-Popular Motorhome Popular
- 2008 - 2008 Four Winds 5000 Motorhome 21RB - Chevrolet
- 2008 - 2008 Four Winds 5000 Motorhome 23A - Chevrolet
- 2008 - 2008 Four Winds 5000 Motorhome 25C - Chevrolet
- 2008 - 2008 Four Winds 5000 Motorhome 28A - Chevrolet
- 2008 - 2008 Four Winds 5000 Motorhome 29R - Chevrolet
- 2008 - 2008 Four Winds 5000 Motorhome 31P - Chevrolet
- 2011 - 2011 Holiday Rambler Aluma Lite Motorhome 23RB - Vortec
- 2011 - 2011 Holiday Rambler Aluma Lite Motorhome 28PBS - Vortec
- 2011 - 2011 Holiday Rambler Aluma Lite Motorhome 31SFD - Vortec
- 2011 - 2011 Holiday Rambler Aluma Lite Motorhome 31WBS - Vortec
- 2009 - 2009 Holiday Rambler Augusta Motorhome 210 - Vortec
- 2009 - 2009 Holiday Rambler Augusta Motorhome 210TS - Vortec
- 2008 - 2009 Holiday Rambler Augusta Motorhome 213 - Vortec
- 2008 - 2008 Holiday Rambler Augusta Motorhome 214 - Vortec
- 2008 - 2009 Holiday Rambler Augusta Motorhome 235S - Vortec
- 2010 - 2010 Holiday Rambler Augusta Motorhome 23RBS - Vortec
- 2011 - 2011 Holiday Rambler Augusta Motorhome 25PCS - Vortec
- 2010 - 2011 Holiday Rambler Augusta Motorhome 28PBD - Vortec
- 2010 - 2011 Holiday Rambler Augusta Motorhome 29PBT - Vortec
- 2011 - 2011 Airstream Avenue Motorhome 20
- 2012 - 2012 Airstream Avenue Motorhome 20 Lounge
- 2012 - 2012 Airstream Avenue Motorhome 20 Suite
- 2000 - 2003 Coachmen Catalina Sport Motorhome 210CB - Chevrolet
- 2001 - 2002 Coachmen Catalina Sport Motorhome 210CBWB - Chevrolet
- 2000 - 2003 Coachmen Catalina Sport Motorhome 220RK - Chevrolet
- 2001 - 2003 Coachmen Catalina Sport Motorhome 239SO - Chevrolet
- 2002 - 2002 Coachmen Catalina Sport Motorhome 239SOWB - Chevrolet See All Vehicle Fits
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Wrong item was ordered
- Did not arrive in time
Ratings & Reviews
4.7
2551 reviews
by:
Penny
08/20/2025
2014
Chevrolet
Express Van
Amazing is the word!!! From nothing in the space to these sumo springs. Now diesel trucks and winds don’t affect us at all. Hubby can drive with one hand now and enjoy the trip. No more white knuckling it anymore.
by:
Lonnie
10/26/2026
Definitely feel the ride difference.
by:
Steve
10/28/2025
2014
Chevrolet
Express Van
The Sumo springs for the Chevy are really easy to instal if you are a DYI person . After install they help reduce body roll while turning in traffic and tight spaces .Make sure to use the supplied loctite to help keep them in place .
by:
Walter Lopez
11/16/2020
2016
Chevrolet
Express Van
They are very helpful when you have a heavy load
by:
Wai
03/04/2020
The rear sumo spring was installed into my 2018 Roadtrek 190 Popularity with no difficulty. The front spring was a bit harder due to clearance issue but with persuation of a little grease, the job done withing 3 hours. Riding experience is great. Going through bump has only one reactive bounce each time. Feels like the wheels are constantly sticking to the ground. I have to get use to this feeling from now on.
by:
Raejr
09/10/2018
I installed these 1 year ago (9/2017) on the rear axle of my 30' Class C RV and immediately noticed an improvement. The ride was better overall, the side-to-side sway was markedly reduced, and even the handling seemed better. Installation was really easy; I didn't even have to jack up the vehicle to remove the old bump stops and the Sumosprings mounted in with minimal effort. It was a quick and easy installation that resulted in improved suspension performance instantly. I've since changed the shocks on all 4 wheels and the combination of Sumosprings plus the new shocks have really improved the suspension performance at all speeds and road conditions. There's no doubt to me that the Sumosprings are providing support against side winds, big trucks passing, and even assisting the shocks on poor roads. Best of all, my wife rarely complains about the ride, feeling like she's falling over on turns, or expansion joints in the highway. They aren't cheap, but compared to all the alternatives I looked at, they're worth the money! Highly recommend them.
by:
Richard
09/29/2024
Still working on my 2017 Express Van pulling a 5700 lb Winnabago TT
by:
Jeff
08/29/2023
Shawnee confirmed that these would soften the rough riding of my Class C. Also told me that it would help reduce sway. Both true. I already had a string stabilizer bar in the rear end. This removed even more sway. Good job eTrailer.
by:
James
05/22/2025
Made a noticeable difference reducing sway on the highway. I recommend these.
by:
Paul
02/27/2024
Made a difference in the RV ride.
by:
Kenny
07/15/2024
Great service and nice to talk to. Super fast delivery.I have not installed them yet. Looks like a great product and easy install. The price is in line. I would do business again. Thank you!
by:
Rick
12/22/2019
2018
Chevrolet
Express Van
Work great thank you
by:
Bart
10/14/2026
2014
Chevrolet
Express Van
by:
Edwin
03/21/2026
by:
Charles
10/25/2022
2006
Chevrolet
Express Van
Great products
by:
Kevin
01/02/2021
by:
Scott
09/11/2022
2007
Chevrolet
Express Van
by:
Doug
06/02/2024
by:
Richard
08/26/2024
by:
Richard
06/24/2024
2015
Chevrolet
Express Van
by:
William
03/19/2021
by:
William
06/12/2021
by:
Karl
12/29/2022
2009
GMC
Savana Van
by:
Randy
01/15/2022
by:
Robert
01/24/2021
2018
Chevrolet
Express Van
25
2551
true
Show More Reviews
See what our Experts say about this SuperSprings Intl Vehicle Suspension
- Is There an Air Bag Kit for a 2024 Chevrolet Express 4500 Class C Motorhome?Hey Larry. I am sorry but there are no air bag kits for your 2024 Chevrolet Express 4500 class C motorhome. The closest alternative I have are the SumoSprings Solo Custom Helper Springs item # SSR-206-54. These replace your factory bump stops and help absorb road shock. What issues are you experiencing that have you looking at air bag kits? 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.
view full answer... - How Tall are the SumoSprings Solo Custom Helper Springs item # SSR-206-54?The SumoSprings Solo Custom Helper Springs item # SSR-206-54 measure 10-3/4" × 7-1/4" × 4-12".
view full answer... - Recommended Suspension Enhancement for 2021 Chevrolet Express 4500 Cutaway MotorhomeFor front and rear suspension enhancement on a Chevrolet Express 4500 I recommend the SumoSprings Solo Custom Helper Springs # SSF-204-54 and # SSR-206-54. The SumoSprings will help absorb bumps and shocks as well as minimize sway and giving you a smoother ride overall. They have progressive load control and work independently to help reduce body roll and compensate for off-center loads. These durable helper springs are made of a high-density microcellular urethane and are maintenance-free. I...
view full answer... - SumoSprings For 2025 Jayco Redhawk 22C on Chevy 4500 ChassisHey John! I reached out to SuperSprings for you, and the SumoSprings Solo Custom Helper Springs you’ll need for your 2025 Jayco Redhawk 22C is part # SSR-206-54. Just a quick heads-up—they wanted to make sure you know that this kit is only compatible with the 2WD version of the Chevy 4500 chassis. If your Redhawk is 2-wheel drive, you’re good to go! Let me know if you have any questions or need help confirming your setup—I’m happy to help!
view full answer... - Suspension Enhancement Option For 2020 Chevy Express 4500 Cutaway MotorhomeWe do have an option for suspension enhancement for your motorhome on a 2020 Chevy Express 4500 cutaway chassis, but the SuperSprings SSA245-2 won't fit since you do not have the top overload spring, as they are designed to install on top of the spring. So instead, I recommend another option, which are SumoSprings, with the correct fit for your RV being the following: - Rear Axe: SumoSprings Solo Custom Helper Springs # SSR-206-54 - Front Axle: SumoSprings Solo Custom Helper Springs #...
view full answer... - Availability of Suspension Enhancement for 2015 Chevy Express 3500 CutawaySince you were looking at the # AL55FJ I'm assuming you want to add suspension enhancement to your 2015 Express 3500 Cutaway. There is a difference between the cargo van and the cutaway. The cutaway isn't an option in the vehicle styles but we do call out the products that fit the cutaway in the installation notes. If you have a 159" wheelbase I recommend using the SumoSprings Solo Custom Helper Springs # SSR-206-54. These have a weight capacity of 2,800 lbs and will help absorb road...
view full answer... - Suspension Enhancement Recommendation for 2011 Chevy Express Van 3500 CutawayFor your 2011 Chevy Express 3500 cutaway chassis we have the SuperSprings kit part # SSR-206-54 which will give you additional rear suspension support of 2,800 lbs. This will do a great job getting rid of the sag you are experiencing on the one side of the trailer and will also help with stability and handling as well.
view full answer... - Improving Rear Suspension Ride Quality On A 2005 Coachmen Freelander Class C Motorhome If your Coachmen Freelander 2330 RK Class C Motorhome with a Chevy Express 3500 cab and chassis has 4WD then I recommend the Timbren Rear Suspension Enhancement System # TGMRG35. Timbrens are known for causing a stiffer ride when the vehicle is unloaded but you can mitigate the stiffness by decreasing the spacers used during installation to allow for a larger gap between the Timbren and the axle. Another thing to consider is the weight capacity of the Timbren's; this option is 3,600lbs...
view full answer... - What is Warranty Length of SumoSprings Kit for Chevy Express VanHey Richard, so the SumoSprings # SSR-206-54 that you were looking at have a limited lifetime warranty which means it would be guaranteed free from manufacturing defects for life.
view full answer... - Recommended Suspension Enhancement For 2018 Coachman Freelancer 27' W/ Chevrolet 4500 ChassisI have another option for you, but at this time there is not an air helper spring system confirmed to fit your 2018 Coachman Freelancer 27' built on the Chevrolet 4500 Van chassis. Instead I recommend adding the SumoSprings Solo Custom Helper Springs - Rear Axle # SSR-206-54 and Front # SSF-204-47 to your Freelancer as they will help support your suspension while carrying the weight of your RV, and help to minimize sway, absorb road shock, and are maintainence free. I included videos...
view full answer... - Suspension Enhancement for 2018 Coachmen Freelander 27 FootWhile we don't have air bag suspension enhancement that fits your 2018 Coachmen Freelander 27 foot motorhome we do have SumoSprings kits that fit like the # SSR-206-54 which will give you the stiffness and stability you are looking for to improve the ride quality. I attached an install video for this kit for you to check out as well.
view full answer... - Are There SumoSprings Available For The 2007 Forest River Sunseeker Workhorse 3500 Chassis? With your 2007 Forest River Sunseeker 2900 on the workhorse class C cutaway chassis you will need to use the Timbren # TGMRW55 if you are wanting to replace the factory jounce bumpers. SumoSprings does not offer a set of jounce bumpers for your chassis only SuperSprings # SSA39 to reduce sagging and improve stability. If your bump stop still does not match this please reply back with your images so I can verify what you have and find another option.
view full answer... - Suspension Enhancement that Fits 2009 Freelander 2130We have great suspension enhancement that fits your 2009 Freelander 2130 like with the part # SSR-206-54 but there isn't a RAS system that fits your RV. The SumoSprings kits do offer similar support and ride quality as the rAS kits so this would be a great option.
view full answer... - Suspension Enhancement Recommendation for 2015 Chevrolet 3500 Express CutawayWe have suspension enhancement that is a fit for a 2015 Chevy Express 3500 on a cutaway chassis, but it's not the Firestone Kit part # F2700 that you referenced. Instead you would want the SumoSprings kit part # SSR-206-54 which is a confirmed fit. This is a rubber spring kit instead which means you still get the suspension support but you do not have to maintain air pressure or run any air lines.
view full answer...
Do you have a question about this Vehicle Suspension?
Info for this part was:
Video by:
Andrew K
Updated by:
Tricia G
Updated by:
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Updated by:
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Updated by:
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Updated by:
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Updated by:
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Expert Research:
Jameson C
Video Edited:
Jacob T
Video Edited:
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Video Edited:
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Video Edited:
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Installed by:
Cole B
Installed by:
Robert C
Test Fit:
David F
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Walter L.
11/17/2021
After a year. Still working very good on my suspension