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  1. Vehicle Suspension
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  3. Towing/Load Leveling
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  6. Rear Axle Suspension Enhancement
Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle
SuperSprings Intl

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

Part Number: CSS-1145R
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$206.99
Vehicle Suspension

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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. Great Prices for the best vehicle suspension from SuperSprings Intl. Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle part number CSS-1145R can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension - CSS-1145R

  • Towing/Load Leveling
  • Bump Stops
  • SuperSprings Intl
  • Standard Duty
  • Rear Axle Suspension Enhancement

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.


Features:

  • 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


Specs:

  • 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-1145 SuperSprings Coil SumoSprings Helper Springs for Coil Spring Suspension - Rear Axle

Installation Details CSS-1145R Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.5

360 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.

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See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • How to Prevent Rear Suspension Sag on 2021 Toyota Highlander Towing Trailer
    The SumoSprings kit part # CSS-1145R is exactly what you are looking for. This will give the rear suspension of your 2021 Toyota Highlander additional support to get rid of the sagging you mentioned. You are right that a weight distribution system would not be the answer for your vehicle either due to it being uni-body. Your vehicle actually isn't rated for weight distribution for this exact reason.
    view full answer...
  • Which Coil SumoSprings For 2018 Toyota Highlander 4WD
    Hey there Barry, thanks for writing in, and I double-checked with the manufacturer and can verify for you the correct Coil SumoSprings for your 2018 Toyota Highlander 4WD (so long as it is not the hybrid version) are the 1145: - Coil SumoSprings Custom Helper Springs # CSS-1145R There isn't actually a 1165 version so I can't tell you what the review you mentioned was referring to, unfortunately. These are definitely the right way to go for your Highlander to help shore up the rear suspension...
    view full answer...
  • Rear Suspension Enhancement Kit for 2020 Toyota Highlander
    We have suspension support kits that fit your 2020 Toyota Highlander with the Coil SumoSprings kit part # CSS-1145R. This will do a great job giving the rear suspension more support to get rid of the sag.
    view full answer...
  • Will Coil SumoSprings Custom Helper Springs Fit a 2018 Toyota Highlander
    I'm pretty sure you are correct that the Coil SumoSprings Custom Helper Springs # CSS-1145R will fit your 2018 Toyota Highlander, however, we haven't had the chance to test this out and SuperSprings doesn't have this listed in their fitguide so I cannot guarantee fitment. The best thing to do is get some measurements of your springs so that I can confirm the correct fitment with SuperSprings on my end. I am attaching a photo showing what measurements I will need so that I can verify what...
    view full answer...
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  • Front Coil SumoSprings For A 2023 Honda Ridgeline
    Hey Luis, For the front of the Ridgeline you would need the Coil SumoSprings # CSS-1125F. If you're wanting some for the rear too then you'll need part # CSS-1145R. I've attached a short video below where Brad will go over the benefits of these springs and show you how they install.
    view full answer...
  • Availability of Rear Axle Air Suspension Enhancement Kit for 2013 Toyota Highlander
    We have two rear-axle suspension kits for the 2013 Toyota Highlander and one works with the 2- and the other with the 4-wheel-drive models. However, these kits are not air-bag types, but rather a micro-cellular polyurethane foam helper spring that fits between the individual turns of the existing coil springs. The part number for this kit is # CSS-1145R for the 4WD and part # CSS-1168R for the 2WD model. These are far easier to install than an air bag kit and once in place they are maintenance-free....
    view full answer...
  • Will the Air Lift 1000 Air Helper Springs Fit a 2022 Dodge Durango RT?
    Hey Joe, sorry but the Air Lift 1000 Air Helper Springs for Coil Springs item # AL60824 will not fit the 2022 Durango's with the RT trim. The only alternative I have for you is the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension item # CSS-1145R. These are spacers that get installed in between the coils and help to keep them for compressing as much when a load is applied. They are super easy to install and take off as well. What are you towing with your Durango?
    view full answer...
  • Can Weight Distribution and Suspension Enhancement be Used with 2008 Toyota Highlander
    Suspension enhancement can be used with your weight distribution and will help with rear end sag. So the # CSS-1145R that fits your 2008 Toyota Highlander would help. You'll need to set your weight distribution up again.
    view full answer...
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  • Solution for Suspension Sag on 2016 Toyota Highlander Towing Trailer
    I wish I could say yes, but as of right now they are not a fit for the 2016 models and we do not have any other suspension enhancement options. If you are trying to fight suspension sag from the tongue weight of a trailer there is a better option. A weight distribution system will reduce the sag but in doing so actually improves braking and handling performance so it is preferred. Based on the towing capacities of your vehicle you would want the part # RP66083. This has a tongue weight...
    view full answer...
  • Will the Coil SumoSprings Custom Helper Springs CSS-1145R Fit a 2012 Toyota Highlander Hybrid
    I spoke with Super Springs about the Coil SumoSprings Custom Helper Springs part # CSS-1145R for your 2012 Toyota Highlander Hybrid. The issue is not that it is not a fit but rather they have not yet had a Hybrid model in to test them on. If you are sure they are the same suspension then they will work for you but in order to be certain I would need you to take the measurements I have attached for you so I can confirm compatibility.
    view full answer...
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  • Difference Between CSS-1145R and CSS-1145R For Toyota Highlander
    The difference between the Coil SumoSprings Custom Helper Springs for Coil Spring Suspension part # CSS-1145R and part # CSS-1168R is that the CSS-1145R is designed for 4 wheel drive models and the CSS-1168R kit is designed for 2 wheel drive models. Neither one of the springs fit the hybrid model Highlander. If you want to provide me with the year of your Highlander I can look into the options for you.
    view full answer...
  • How To Help Prevent Sag While Towing with a 2019 Honda Odyssey
    I actually do have an option for your 2019 Honda Odyssey to help with sag and for that you can use the Coil SumoSprings Custom Helper Springs which are a great option for smaller tow vehicles with a rear coil spring suspension. These are spacers that get installed in between the coils and help to keep them for compressing as much when a load is applied. They are super easy to install and take off as well. In order to get you the correct kit I would need you to take the measurements listed...
    view full answer...
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  • Options to Supplement Rear Suspension on a 2021 Honda Ridgeline
    I spoke with SumoSprings and the # CSS-1145R is the part they suggested for a 2021 Honda Ridgeline. This will install on the rear coil spring and will help with some of the sag you are experiencing. If you are experiencing a lot of sag, you may want to look into getting a weight distribution system as well. That being said, this will depend on the tongue weight of the trailer you are pulling and if the vehicle is rated to be use a weight distribution system. Depending on all that, the...
    view full answer...
  • Will SuperSprings Custom Helper Springs Help Rear Sag on 2012 Toyota Highlander with Tent Trailer
    The SuperSprings Coil SumoSprings Custom Helper Springs # CSS-1145R referenced in your question is confirmed to fit your 4WD 2012 Toyota Highlander. These springs will simply insert between the individual coils of each coil spring to enhance the suspension's ability to support loads like your trailer. This will definitely do a nice job of preventing the rear sag you are experiencing when hooking up your tent trailer. I have attached a short video demonstration on this product, along with...
    view full answer...
  • How to Eliminate Sag in Rear Suspension of 2008 Toyota Highlander Caused By Towing Boat Trailer
    The # CSS-1145R Coil Sumo Springs you'd looked at would be an economical solution that would improve the rear end suspension sag you're experiencing, but might not remove all the sag depending on the trailer's tongue weight. Since you state that you don't have any other towing problems, this alternative might suffice for you. This being said, having the ride height compressed in the back causes a few effects you might not have considered. When the rear suspension is compressed by more...
    view full answer...
  • Comparison Between SuperSprings # CSS-1145 And # CSS-1145R
    Part # CSS-1145 and part # CSS-1145R are identical helper springs. They are designed to fit the rear only for your 2013 Dodge Durango. Originally these were designed for both the front and back and the R indicated they were to be used on the rear only. These are inserted between the coils of each coil spring on your Durango and help to reduce body roll and help keep your Durango level. As more weight is added the stiffer they become.
    view full answer...
  • Can I Use a Weight Distribution Hitch on a 2019 Honda Pilot
    Generally, switching to a weight distribution hitch with anti-sway built in is going to provide a much better towing experience; you're also going to find that these combined systems like the Fastway E2 # FA94-00-0600 will allow you to backup while they're attached. However, according to Honda, it's not recommended that you use a weight distribution hitch on the 2019 Pilot. The Honda Pilot is a uni-body frame and the added stress that a trailer is going to put on the rear axle of a vehicle...
    view full answer...
    Image 1 for
  • Rear Air Bag Helper Springs for a 2015 Toyota 4Runner
    The ideal solution to level a vehicle that is sagging when towing a trailer is weight distribution and not helper springs. I can recommend both but for weight distribution you need to go by the total tongue weight. This is the tongue weight of the trailer when loaded and ready to tow plus the weight of anything carried behind the rear axle of the tow vehicle. Air bags such as # F4135 for your 2015 Toyota 4Runner are going to offer a better ride and more adjustability than Coil Sumo Springs...
    view full answer...
  • Difference Between Coil SumoSprings for 2014 VW Golf
    There is just a slight difference in size between the two parts; the Coil SumoSprings # CSS-1125R have a 1.25" inner wall height and are 2.5" tall and 6" in diameter. The Coil SumoSprings # CSS-1145R have a 1.45" inner wall and are 3" tall and 6.5" in diameter. Each of these springs are a fit for your 2014 VW Golf and though neither is stiffer than the other, they work by becoming stiffer depending on the load. Both products install the same on your Golf's coil springs and will give you...
    view full answer...
  • Do Coil SumoSprings have an Effect on the Axle Alignment or Wheel Camper on a 2012 Toyota Highlander
    Installing Coil SumoSprings # CSS-1145R on your 2012 Toyota Highlander will not affect the rear axle alignment or the wheel camber. However, to install the springs you have to jack up the frame of the vehicle until the suspension is fully extended. While it isn't likely that doing so will have an impact on the alignment or camber that is the only part of the installation that could change the alignment. Wheel camber is basically a non-issue. I have linked the instructions for you and...
    view full answer...
  • Towing Capacity for 2015 Dodge Durango AWD without Factory Tow Package
    I took a look at the owner's manual for your 2015 Dodge Durango AWD and did see that for the Light Duty model, the maximum trailer weight is 3,500 lbs and the maximum tongue weight is 350 lbs. Unfortunately, the overall rating of a towing setup will always be limited by its weakest component. In this case, you will have to go by your vehicle's weight capacity regardless of the installed trailer hitch rating. Considering that the dry weight of your trailer is already at your vehicle's capacity,...
    view full answer...
  • SumoSprings Helper Springs For a 2023 Toyota Highlander Limited Platinum
    Yes, the Coil SumoSprings Custom Helper Springs # CSS-1145R are confirmed to fit your 2023 Toyota Highlander Limited Platinum. You should not have any issues for your warranty as it is a add on part and you are not modifying the vehicle components. You are simply helping to provide support to the rear coil springs. The only way you would void your warranty is if Toyota could prove the parts caused a failure or you tried to overload the capacities given from Toyota.
    view full answer...
  • Helper Spring Option for 2015 Toyota Highlander
    The only suspension enhancement/helper spring options we offer for the 2015 Toyota Highlander are the Coil SumoSprings from SuperSpirngs. 2WD models would use # CSS-1168R and 4WD models would use # CSS-1145R. The CoilSumo Springs install in between the coils of the coil springs, adding additional support, and reducing body roll during turns. These are much easier to install than air helper springs, they'll never leak and they require no maintenance. I've provided a link showing a typical...
    view full answer...
  • Solutions to Combat Rear End Sag Experienced When Towing with 2019 Honda Odyssey
    At this time, none of our vendors offer a suspension enhancement option for the 5th generation 2019 Honda Odyssey and nothing is currently in the works. Given the popularity of the Odyssey, I'd expect that to change at some point, but none of our vendors could say when that might happen. If the sag you mention is caused by the tongue weight of a trailer, and if your hitch is rated for use with a weight distribution system, weight distribution would be a much better way of dealing with...
    view full answer...


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