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  1. Vehicle Suspension
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  4. 2008
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FITS 2008 Volkswagen Passat
Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle

Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle

Item # CSS-1125R
Our Price: $179.99
Vehicle Suspension
Confirmed to Fit
2008 Volkswagen Passat



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The best technical support and full vehicle suspension installation instructions. Great price Passat vehicle suspension and expert service. Volkswagen Passat, 2008 vehicle suspension by SuperSprings Intl are available from For expert service call 1-800-940-8924 to order your Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle part number CSS-1125R, or order online at
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  • Reviews (325)
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2008 Volkswagen Passat - Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle

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

Get the cushioning power of SumoSprings for your coil springs and keep your ride comfortable. The wedge-shaped springs fit between the individual coils of your existing springs and help support heavy loads on your rear suspension.


  • Helper spring inserts increase ride comfort and enhance your coil suspension's ability to support loads
    • Inner core of microcellular polyurethane foam provides cushioning and support
  • Adjusts progressively to the weight of your load - the more you load onto your vehicle, the stiffer they become
  • Reduces body roll and helps level your truck
  • Withstands extreme temperatures
  • Durable springs resist damage caused by abrasion, oil, road salt and UV rays
  • Installs easily on rear coils
    • Inserts between the individual coils of each coil spring
    • Custom fit for your vehicle
  • Requires no maintenance
  • Includes 2 helper springs
  • Made in the USA


  • Application: rear coil spring suspensions
  • Designed to work with a suspension system that is in good working order
  • Coil SumoSprings will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's weight limit for your vehicle.
  • Limited Lifetime warranty
  • 30-Day satisfaction guarantee

Insert these helper springs in between the individual coil loops in your rear coil springs to defeat driver fatigue and add better support for heavy loads. Most factory coil suspensions have a difficult time hauling added weight. The rear coils may struggle with supporting the extra load placed on your rear axle when you're towing a trailer or using a hitch-mounted cargo carrier or bike rack. If your coil springs are totally squished under a load, the lack of shock absorption can be harsh on your backside, especially if you spend long hours sitting in your vehicle while driving to your campsite.

Coil SumoSpring installed between rungs of coil spring

Inside each helper spring, a core of microcellular polyurethane foam adds cushioning between your coils to make your ride more comfortable. Each doughnut-shaped spring has H-shaped channels at the top and bottom that fit to the rung of an individual coil in your rear coil springs. The cushioning absorbs shock, but also works progressively to better support weight, keeping your truck level.

Unlike air springs that fit inside your coil springs, these polyurethane springs require no air pressure monitoring, and they are easier to install. Say goodbye to air lines, valves and air tanks and hello to maintenance-free suspension support. Unbumpify your ride with Coil SumoSprings for coil suspensions.

CSS-1125 SuperSprings Coil SumoSprings Helper Springs for Coil Spring Suspension - Rear Axle

Installation Details CSS-1125R Installation instructions

Customer Satisfaction Score:

Customer Reviews

Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle - CSS-1125R

Average Customer Rating:  4.6 out of 5 stars   (325 Customer Reviews)

Get the cushioning power of SumoSprings for your coil springs and keep your ride comfortable. The wedge-shaped springs fit between the individual coils of your existing springs and help support heavy loads on your rear suspension.

2021 Subaru Outback Wagon

Works exactly how I needed. The Ride is still very nice. There's about 350lbs with the weight of the box & rack. Suspension in the rear used to sag a bunch, even with a 2" suspension lift.

Ive kept them installed for the last year and the cars ride quality has never suffered. Great product!!
Trevor T - 10/17/2022


Did not fit vehicle despite website saying it was correct part. Got a 'not our problem' from both etrailer & sumosprings.

I apologize as I see that we were working on a return for you that was not finished. Customer Service will be in touch to help.
-- Etrailer Expert Jenny N - 10/17/2022

2021 Subaru Outback Wagon

Received these today, and they look as advertised EXCEPT there are no perforations between the upper and lower grooves for securing to the springs with zip ties. They were to go on our ‘21 Outback xt, but I plan on returning them. Hopefully they can be exchanged for a set with the perforations, and I can change to an excellent rating.

SuperSprings updated the coil springs and they no longer come with zip ties. They are designed to pop into place and are held there by the groove in the coil spring.
-- Etrailer Expert Jenny N - 11/28/2022


Installed pretty easily. The trick is to start at the bottom of the spring and push it up. Didn’t need to apply any soap but springs were pretty clean to begin with (38K miles). The kit did not come with zip ties even though the etrailer description says it should, but the Sumosprings documentation clearly states they are not included.


Installation instructions were clear. The vehicle did not squat as much and rebound was decreased.

2011 Ford Expedition

Easy install. Took less than 20 minutes including the time to drive to a neighbor to borrow a floor jack and stands.

Definitely use soapy water liberally to help slip it into place.

This was an excellent buy. It helped with rear squat and stabilized the rear end of the vehicle to a surprising degree. Much less bouncy and reduced porpoising.
Tyler E - 08/06/2022

2015 Honda CR-V

before installing the SumoSprings in the rear of my 2015 Honda CR-V the rear ride height would be level and when I loaded my powerchair
(electric wheelchair) on the rear lift of my car it would sag 3"and be vry twitchy in the steering, it did not feel safe at all, after installing the SumoSprings it would ride level and be much more stable in the steering, when I unload my chair my car is at the proper ride height it did not jack up the rear end at all. I'm very pleased with the SumoSprings and would recommend them to anyone.


Raised rear of my 2021 Outback 1 1/4” and it also raised my front 1/4”.
Little stiffer in the rear and less dropping of rear during Acceleration.
People are always flashing me the high beams before, these should reduce the amount of high beams I get.
Would have given it a 5 Star But it would be nicer not to have to cut the excess off.

2014 VolkswagenPassat

I used the Sumo Springs on a 2014 VW Passat TDI SEL in the rear. I like the product, my car always had that overloaded look I tow a small trailer and the car's suspension was to soft.
The Sumo spring Support works great on my car the car came up about half inch and under load it gives the needed support I was locking for.
I also like that I have not to mess around with any air adjustment and it tis maintenance free.

The install was easy and I was done in about 45 minutes. The toughest part was to cut it for the instructed length for my car.

2015 Toyota Prius

Installed sumo springs on my 2007 Toyota Prius. They installed fairly easily in about 15 minutes per wheel. I had to trim approximately 3 inches off of each sumo spring. I used ivory soap bar to lubricate the springs before install. The rear of the car was raised maybe 2 inches as a result. I do not notice any adverse changes in the handling of the vehicle when not loaded. Moving cross country soon and need to load up vehicle so not bottoming rear springs. overall very pleased with the product. Received Quick delivery of product from etrailer.


Very easy to install. I can’t tell a difference in ride when not loaded, but it really helps when I have the back loaded down.


These really work! My CRV even handles better when not towing the trailer.

Excellent! Vehicle handles better even when the trailer is not being used Honda CRV pulling a 1000 lb. tip-up trailer.
Martin - 01/19/2022


Easy to install and great to prevent body roll. Also prevent the truck from hit the stops. On heavy loads looking into getting a set for the front


I installed the Sumo spring helpers on a 2018 Subaru Outback. The installation was straight forward and took me less than an hour. The installation with this model car is tight and at first I didn’t think the helpers would fit because of the shock boot cover and the wheel well molding. However, you need to work the helpers into the springs at the bottom 2 turns, cut with a buck knife, fasten a zip tie to each end and then thread the helper up the springs to the top 2-3 turns as stated by the instructions. A little tip that made my install easy was to cut the leading top inside edge, 1/4 inch or so, at an angle. This enables the leading upper back edge to easily slip under the spring and then it is super easy to work the remainder in place.

The helpers seemed to lift the back end about 1.5-2” and the ride is so much better since the back suspension is firmer and doesn’t bounce so much on bumpy roads. I tried it out on some speed bumps also, awesome!.

I should have taken before and after pictures but was in a hurry to get the install done and load the car for a nomad camping adventure. My reason for wanting to install the Sumo helpers is because we recently took a trip to Bears Ears,UT and had to carry 30 gallons of water, with a hitch cargo box and the Outback fill road. ed with essential camping gear. The load was within Subaru weight specs but the back end was definitely sagging and driving at highway speeds was a bit nerve racking. The car is loaded again, albeit with everything except only 2-6 gallon jerry cans, and the back looks and feels much safer. I would highly recommend this product to solve the back end sag and unsafe bounce when carrying weight in the middle to upper range of Subaru weight specifications.

I will get pictures next time I have the tires off but had to load and hit the road.

My question is why are the Sumo helpers only recommended for the rear?

These are designed to help support the load of the rear especially when towing. When towing some vehicles experience rear sag and these help support the weight to keep the vehicle level.
-- Etrailer Expert Heather A - 07/08/2021


Fit like a glove , no issues, no complaints. I would recommend this product to everyone

2007 Toyota RAV4

This product really did the job for me. It provide much needed support for my rear spring when attaching my tent trailer. It leveled off the trailer so that the trailer hitch would not dip. Great product and I'm glad I purchased it.


I have not installed them yet, but according to the reviews that I have read they should work great.

2015 Honda Pilot

Easy install in 15 minutes. It did help with sag and I noticed an immediate difference on the positive side. I installed these on a Honda Pilot used for towing a small Teardrop trailer. I am using these in conjunction with Timbren bump stops and am pleased with the results. I was going to install airbags but did not want the hassle of checking air pressure and these being maintenance free was a good option.

did this help level the rear of your pilot? My sags
-- comment by: lance - 08/28/2014
If you want to help with sag I suggest putting in air bags. The super springs do help but air bags will let you adjust height about 1 to 2 inches.
-- comment by: Alex G - 08/30/2014
If you want to level out your Pilot try Airbags from Firestone or Ready Lift. You can adjuct hieght about 1 or 2 inches. I installed the Ready Lift 2 inch lift kit but still might do the airbags down the line but I am happy with the Super Springs and lift kit!
-- comment by: Alex G - 08/31/2014

2005 Toyota Prius

Been a year now with the SumoSprings, and they've been outstanding! No pictures but have a hitch and cargo carrier on the back of our 2005 Prius, and have loaded it down with four people, all our gear, plus a pressure washer and hose on the back carrier. Kept it level with no handling issues! No issues and looks good empty also. Easy to install, just pulled off the wheels to make it easier, zip-tied in place. So far so awesome.-Joe

2008 Chevrolet Silverado 2500

I have a 2008 CR-V LX I use to pull at Little Guy 5 wide teardrop trailer and there are no heavy duty strut options available. So after much research I settled on these and decided to buy them from The installation was just as easy as everyone has stated on other reviews. All I had to do was jack up the rear end and pull the tires and the slide on without any lubrication at all..just cleaned off the springs and they slid right on. The CSS-1125R will need to be trimmed but that was easy too for two reasons. 1st they are very easy to cut with a razor knife and 2nd the overlap position was easy to find and reproduce because it fell right on one of the holes the the zip ties go through. Probably the hardest part was making sure they were in the same place on both sides of the vehicle but that is not a problem at all if you have access to both sides at the same time.I haven't hooked up the trailer but I could tell immediately that the suspension performance was improved on cornering and the way it handles railroad tracks and potholes. My mechanic went so far as to say he tell the difference just by driving out of his driveway. Hopefully I can come back and give an update after my 2500 mile trip pulling the LG 5W.

2013 Hyundai Santa Fe

I installed these on my 2013 six passenger Hyudai Santa Fe Limited the instal was easy, just watch the video and you will have no problem. The helpers do just that they add a little more resistance to the spring compression. They raised the rear of the vehicle 1/4 of a inch barely noticeable to the naked eye but I measured before and after the instalation. The ride feels the same but when you load the rear with additional weight or when my trailer is hitched up the rear sag is less. I would guess it helps about 300 to 400 pounds worth.

Honda CR-V

Bought these for our Honda CR-V that hauls our race car on a small trailer. Installation was pretty easy and they seem to have firmed up the rear end quite nicely. No more sag when towing!

Hey Jake, does your CR-V handle that load pretty good? How much Id the weight ? Im buying a 14ft long, 5ft wide ,5ft high, enclosed trailer and need to go from ky to Ga to pick it up, so I was wondering if I need these spring helpers.Thank you and God bless you and yours , Gary
-- comment by: Gary S - 11/29/2015
Gary,The CRV seems to handle ok not great, but ok with this load. Were at about 1800 lbs with the race car and trailer. Im not sure how much the helpers changed the handling, but they did fix the sag at the rear with a load. Hope this helps Gary!
-- comment by: Jake - 12/04/2015

2018 Honda CR-V

Just got them and did some riding around. I can already tell these babies are gonna be great!!!! No more sagging in rear with my already soft coils/suspension. First 2 photos are without sumocoils.

2018 CRV 2wd 1.5t EX.

2010 Jeep Patriot

I install it on my 2010 Jeep Patriot to level my rear suspension when towing a heavy tongue weight trailer (under Jeep maximum tongue weight rating) such as this product is advertised for, but it just do nothing. It doesn't increase my rear suspension level by even a quarter inch! Moreover, this product cause very bad "bouncing" of my rear suspension when loaded who make the driving of the trailer very unstable and very dangerous. I finally agreed to a return and a refund with via SuperSprings (California) customer service. But I still lost the price of the incoming and return shipping. In conclusion, save your money and purchase heavy duty coil springs instead.

2017 Subaru Outback Wagon

Easily installed, noticeable height increase and immediate improvement of rear suspension

Show More Reviews

See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Rear Coil SumoSprings on a 2012 Ford Expedition
    Our part # CSS-1125R is confirmed to fit on your 2012 Ford Expedition. This is actually the same exact part as the # CSS-1125. The "R" on the end of the part number indicates that it is a fit for the rear of your vehicle. In short, the Coil SumoSprings # CSS-1125 will fit your Expedition for the rear axle.
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  • What is the Difference between the SuperSprings Coil Insert # CSS-1125 and # CSS-1125R
    The SuperSprings Coil Spring Inserts, # CSS-1125 and # CSS-1125R, are the same exact part and both will fit your 2011 Honda CR-V EX-L. The actual part number from SuperSprings is CSS-1125, but we put an R or an F on the end of the part numbers for these products to indicate if it is used for Rear coils springs or Front coil springs on a particular vehicle. For example, on your CR-V, these springs are used on the rear coil springs, so we put an R at the end of the part number. These springs...
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  • Distance Between Upper and Lower Grooves where Spring Coils Sit for 2005 Honda Pilot SumoSprings
    The SumoSprings # CSS-1125R are designed specifically to fit the rear coil springs on your 2005 Honda Pilot. I spoke with my contact at SuperSprings and the measurement between the grooves where the coils rest is 1.25 inches.
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  • Will SuperSpring Coil Inserts Fit on a 2009 Subaru Legacy
    If you can provide me with some measurements of your coil springs, I can determine if any of our SuperSprings Coil Inserts will work on your 2009 Subaru Legacy. Unfortunately SuperSprings has not tested any of their coil inserts with your vehicle, but we may be able to find something that will work. If you can send me the overall diameter of your coil spring, the distance between each coil and the diameter of the spring coil, I can see if we have an insert that will work for you. I have...
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  • Suspension Recommendation for a 2006 Honda Pilot Towing a Tent Trailer
    Both the Air Lift 1000 # AL60815 and Super Springs Custom Helper # CSS-1125R would give your 2006 Honda Pilot the added support to help with your sagging issue, however these systems were designed so suspend loads carried in the vehicle itself, not to level out a vehicle when towing. When towing a trailer it is best to look into a weight distribution system. With a weight distribution system, it will relieve the pressure on the back axle and distributes that weight evenly. I have attached...
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  • Is Installation of Rear SumoSprings the Same as Front SumoSprings on a 2010 Subaru Forester
    The instructions for the Coil SumoSprings # CSS-1125R are typical, generic instructions for the SumoSprings regardless of front or rear. You are correct though you would stabilize the front wheels of the vehicle and adjust your installation accordingly for the rear where needed when following the instructions to install them on the rear axle. However, on your 2010 Subaru Forester there are some special trimming instructions you will need. For these instructions you will need to contact...
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  • Will SumoSprings Helper Springs # CSS-1125R Stop Rear Sag in 2003 Honda Pilot
    The SumoSprings Custom Helper Springs for Coil Spring Suspension # CSS-1125R that you referenced are indeed a correct fit for the rear coil springs on your 2003 Honda Pilot. These microcellular polyurethane foam springs are intended to help support a suspension that is in good working order for times when it is carrying loads. When the Pilot is not under load, these springs will essentially be inactive; their resistance grows progressively with increased weight load. So, they will help...
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  • Suspension Enhancement Recommendation for 2014 Chevy Impala
    If the wheelchair carrier is only 2 inches off the ground when it is loaded that would most likely indicate that the hitch setup has a pretty nasty downward bend or the suspension is completely maxed out. Suspension enhancement like the part # CSS-1125R (which is a confirmed fit for your 2014 Chevy Impala) will help with the suspension. But you really need to make sure that you aren't overloading the hitch. If you can send me a picture of the setup with it loaded that would help a lot...
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  • Will The SumoSprings Helper Springs Lift My 2008 Honda CR-V?
    The Coil SumoSprings Custom Helper Springs # CSS-1125R are not designed to lift your 2008 Honda CR-V. They are designed to assist in reducing your suspension from sagging with heavy loads. If your springs on your CR-V are worn and sagging from you may notice a slight increase in ride height but they are by no means a solution to lift your CR-V. We do not offer any lift kits currently for vehicles.
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  • Determining If Any Rear Suspensions Enhancement Will Fit 2018 Tesla Model 3
    At this time there is not a suspension enhancement option confirmed to fit your vehicle but there might still be an option. What you will need to do is measure the distance between the coils in the center of your rear coil springs. Depending on the distance between the coils there may be a Coil SumoSprings option such as the # CSS-1125R which will fit. This option installs in between your center coils and stiffens up the springs to keep your vehicle from sagging when towing a trailer....
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  • Installing and Removing Sumo Spring Supports for 2020 Subaru Outback Wagon
    Yes, the Coil SumoSprings Custom Helper Springs item # CSS-1125R can be removed by following the same steps as you did when you installed them. All you have to do is reverse steps 5-7 once you get the car jacked up and the tension out of the springs.
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  • Will Coil SumoSprings for 2003 Chevy Avalanche 1500 2WD Work With Auto Level
    You can use the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension # CSS-1125R on your 2003 Chevy Avalanche with the auto level system, as they will not interfere with the system. I have added a link to a video review and the installation instructions for you as well of the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension # CSS-1125R. As for the Air LIft springs, those are not compatible with your vehicle.
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  • Will the Coil SumoSprings Custom Helper Springs Fit the AWD Model of a 2015 Honda CR-V
    I spoke with our contact at SuperSprings. They have confirmed that the Coil SumoSprings Custom Helper Springs, part # CSS-1125R, will in fact fit the AWD model of the 2015 Honda CR-V. I've linked to a video review of these springs for you to look at.
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  • Are There Air Bags for a 2017 Subaru Outback
    The only type of suspension enhancement system available for a 2017 Subaru Outback is the Coil SumoSprings Custom Helper Springs part # CSS-1125R. The SumoSprings will do a great job of providing rear end support when towing or hauling, they are easy to install, and unlike air bags require zero maintenance.
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  • 2012 Kia Sorento Coil SumoSprings Custom Helper Springs Suspension Enhancement
    Air bags will definitely help provide suspension and clearance support but for your 2012 Kia Sorento there isn't a confirmed fitting air bag or air spring kit designed yet. What you can do is add coil spring helpers to your springs to enhance your suspension. To do this measure the middle distance on the middle coil of your rear axle springs while it is sitting on the ground so the weight on the car is on them and there you can find the correct fiiting Coil SumoSprings Helpers. For example...
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  • How To Prevent Sag On 2004 Honda CR-V With Small Trailer
    The Coil SumoSprings Custom Helper Springs part # CSS-1125R are the perfect option for a 2004 Honda CR-V. They are super easy to install (no tools required) and will do a great job of helping transfer weight from the rear to the front axle which will improve braking and stability. In regards to shifting items on the trailer to lessen the tongue weight, this is not a good option because it will in turn affect the stability and lead to sway which is possible even with an anti-sway bar. I...
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  • Will the SuperSprings Coil SumoSprings # CSS-1125R Fit a 2013 Rav4 Rear Suspension
    The SuperSprings Coil SumoSprings, # CSS-1125R, have been confirmed to fit your 2013 Toyota RAV4. I pulled these springs from our warehouse to make a video for you to give you an idea of what they look like. These springs are 6-1/8 inches in diameter. They have an overall height of 2-1/2 inches. The thickness is 3/4 inch and the height of the inner portion of the spring is 1-1/4 inch.
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  • Suspension Enhancement for a 2011 Honda CR-V EX
    We are accurate, it is # CSS-1125R that is the correct fit for the 2011 Honda CR-V. I have even confirmed this with Super Springs. If the CR-V is bottoming out because it is coupled to a trailer then you will want to keep an eye on the tongue weight of the trailer. The CR-V is rated for 150 pounds tongue weight, check the owners manual to confirm, so a higher tongue weight could be one reason that is happening. The SumoSprings # CSS-1125R will firm up the suspension though and help to...
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  • Rear Axle Suspension Enhancement for 2006 Honda Pilot EX-L 4WD With Rear Struts
    Rear coil springs with a strut such as those on your 2006 Honda Pilot EX-L 4WD cannot be fitted with air springs without removing the struts since these too install inside the coils. There is a product from Super Springs, their microcellular polyurethane foam helper spring kit # CSS-1125R, that will work along with the struts/coil springs on some Honda Pilots. These springs simply insert within the turns of the coil springs and are held in place with zip ties. These are a zero-maintenance...
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  • How To Increase Rear Suspension Support On a 2016 Subaru Outback Wagon
    I do have an option for you but we do not offer any replacement strut assemblies for your 2016 Subaru Outback Wagon nor do I think any heavy duty options are even available. If you need to increase the support of your rear suspension then the best option I have for this is the Coil SumoSprings Custom Helper Springs part # CSS-1125R which are very easy to install and can be removed as needed. Frankly, there are just not a lot of options for a 2016 Subaru Outback Wagon.
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  • Recommended Suspension Enhancement for 2003 Honda CR-V with Hitch-Mounted Carrier
    To help with the rear sag you are experiencing on your 2003 Honda CR-V when loading up your hitch-mounted carrier, I recommend the SumoSprings Coil Custom Helper Springs # CSS-1125R. This system is confirmed to fit your CR-V and will do a really nice job of supporting the additional tongue weight you are putting on the vehicle, helping to keep it level while also allowing for a comfortable ride without the carrier attached. These helper springs will adjust progressively to the weight of...
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  • Suspension Enhancement Recommendation Mitsubishi Outlander 2011 XLS
    We have suspension enhancement that is a confirmed fit for your 2011 Mitsubishi Outlander with the Coil SumoSprings part # CSS-1125R but we do not have any Firestone Ride Rite kits that fit your vehicle.
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  • Will SumoSprings Kit Affect Unloaded Ride Height of 2016 Subaru Outback Wagon
    The SumoSpring kit part # CSS-1125R will not affect the unloaded ride height of your 2016 Subaru Outback Wagon. It'll help reduce sag when you are towing but would not make the vehicle sit up any higher without a load on the vehicle.
    view full answer...
  • Suspension Enhancement Recommendation for 2016 Subaru Outback Towing Camper Trailer
    Yes, the SumoSprings part # CSS-1125R that you referenced are a confirmed fit for your 2016 Subaru Outback Wagon and would eliminate the sag you are experiencing when towing as that's exactly what they are designed to do.
    view full answer...
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