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  1. Vehicle Suspension
  2. SuperSprings Intl
  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
  5. Standard Duty
SumoSprings Solo Custom Helper Springs - Rear Axle
SuperSprings Intl

SumoSprings Solo Custom Helper Springs - Rear Axle

Part Number: SS45MR
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$336.99
Retail:$390.58
You Save: $53.59
Vehicle Suspension

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2,800-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation. Great Prices for the best vehicle suspension from SuperSprings Intl. SumoSprings Solo Custom Helper Springs - Rear Axle part number SS45MR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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SuperSprings Intl Vehicle Suspension - SS45MR

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

2,800-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.


Features:

  • Helper springs upgrade your vehicle's rear suspension for improved driver control and comfort
    • Keep your vehicle level when you're towing or hauling a heavy load
    • Help to absorb bumps and shocks
    • Minimize sway
  • 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 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
  • Simple, no-drill installation
  • 2 Jounce-style springs included
  • Made in the USA


Specs:

  • Weight capacity (at 50-percent compression): 2,800 lbs
    • SumoSprings will not increase your vehicle's weight-carrying capacity
  • Limited lifetime warranty
  • 30-Day satisfaction guarantee


Rear Suspension Support

Towing or hauling a heavy load can cause rear sag as your factory suspension compresses under the weight of the load. This means that the rear axle is trying to support not only the extra load but also the weight of your vehicle. And because there is less weight on your front axle, your front 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.


Installed spring when it is not compressed

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 closed-cell urethane material allows for smooth contact between the springs and your vehicle. And the springs act like a shock absorber to dampen road vibration.


Installed spring when it is compressed

The springs can also compress by as much as 80 percent to support a heavy rear 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 front 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 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.


The helper springs are custom designed to fit your vehicle, and they install easily - no drilling required.



SSR-209-54 SuperSprings Sumo Springs Solo Rear Vehicle Suspension Kit for Trucks

Installation Details SS45MR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

SumoSprings Solo Custom Helper Springs - Rear Axle - SS45MR

Average Customer Rating:  4.7 out of 5 stars   (2516 Customer Reviews)

2,800-lb Capacity. Upgrade your vehicle's rear suspension with these maintenance-free helper springs. Sturdy microcellular urethane springs cushion bumps and help support a heavy load to level your ride and minimize sway. No-drill installation.

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See what our Experts say about this SuperSprings Intl Vehicle Suspension

  • Suspension Enhancement that Can Fit 2018 GMC Sierra 1500 with Lowering Shackles
    Since your lowering shackles change the distance between the rear axle and the truck frame you would not be able to use the # SS45MR for suspension enhancement as it would be too tall.
    view full answer...
  • Best Option for Addressing a Squatting Rear End on a 2016 Chevy Silverado 1500
    SumoSprings would definitely be the solution I would recommend for your squatting concern. The SumoSprings Solo Custom Helper Springs - Rear Axle item # SS45MR have a 2,800 lbs capacity which would eliminate that carolina lift look you get when your bed is loaded. These springs have progressive load control, which means that the springs compress according to the weight of your cargo. If you're not towing or hauling you won't notice a difference unless you hit a pretty big bump. The leveling...
    view full answer...
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  • Difference Between SumoSprings Solo Kits for 2017 Chevy Silverado 4WD
    Hey Dean, so the big difference is the capacity of the two SumoSprings kits # SSR-209-40 and # SS45MR that fit your 2017 Chevy Silverado 1500. The part # SS45MR has a 2,800 lb weight capacity and the # SSR-209-40 is 1,000 lb. The higher the capacity the more support but the higher the chance the ride quality might suffer or be harsh. So depending on how bad you need the additional support is how you'd pick between the two.
    view full answer...
  • Recommended Suspension Enhancement For A 2015 Chevrolet Silverado 1500
    I recommend the SumoSprings Solo Custom Helper Springs # SS45MR for your 2015 Chevrolet Silverado 1500. I like this springs over the others that we offer because they're maintenance free and have no tubing to run or air pressure to monitor like you do with the air springs. The SumoSprings have a weight capacity at 2,800 pounds, and will work in temperatures from -25 F to 200 F. I linked an installation video below of the SumoSprings being installed onto your exact vehicle. If you have...
    view full answer...
  • Comparing SumoSprings Solo Custom Helper Springs for a 2008 Chevy Silverado 1500
    There are three different SumoSprings Solo Custom Helper Spring options for a 2008 Chevrolet Silverado 1500. The difference is indeed weight capacity; part # SSR-209-40 for 1,000 lbs, part # SS95MR for 1,500 lbs, and part # SS45MR for 2,800 lbs. The part # SS95MR for 1,500 lbs would be a great option for your setup and what I recommend.
    view full answer...
  • Should Spacer of Sumosprings Kit for 2018 GMC Sierra 1500 4x4 Be Used
    It is recommended that you use the included spacer with the SumoSprings kit part # SS45MR that you have installed on your 2018 GMC Sierra 1500. This allows the kit to engage at the appropriate point in your suspension travel to give you the support needed.
    view full answer...
  • Recommended Suspension Enhancement For 2019 Chevrolet Silverado 1500 LD 4WD
    I recommend the RoadActive Suspension Kit # RAS54FR over the SumoSprings # SS45MR for your 2019 Silverado 1500 LD. The RAS is an active system so it is always providing the additional support to improve your ride. These will help keep you level while also eliminating axle wrap, wheel hop, and bottoming out. The kit will also improve your traction and prolong the life of your leaf springs, shocks, and tires. I'm not entirely sure how bad these roads actually are but it is possible to use...
    view full answer...
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  • Which SumoSprings Solo Fits 2020 Chevy Silverado 1500
    Yes the SumoSprings part # SS45MR is a fit for your 2020 Chevy Silverado 1500 Z71.
    view full answer...
  • Which Sumo Spring Product for 2018 GMC 1500 Towing Up To 10,000 lbs
    Since the SumoSprings will be helping to support the trailer's tongue weight load, ideally you'll want to match the amount of support offered by the SumoSpring to the trailer's tongue weight. Since at most, the tongue weight of your dump trailer will be about 1500 lbs, worst case, I'd go with the 1500 lb capacity, part # SS95MR. When installed, the springs won't quite touch the rear truck axle, so they won't have any effect on your ride except when you're hauling items in the truck bed...
    view full answer...
  • Recommended Suspension Enhancement for a 2000 GMC 1500 Sierra 2WD with a 3 Inch Lift
    As the SumoSprings # SS45MR are designed to be used with stock height vehicles, I do suggest going a different way. The RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS54FR will not be impeded by the lift on your vehicle. This is also rated up to 3,000 pounds and will definitely help with sagging while towing. This can also be used in unison with the Roadmaster Rear Anti-Sway Bar # RM-1109-176. This is, however, intended as a replacement/upgrade for a vehicle with a 1 inch...
    view full answer...
  • Recommended SumoSprings for Hauling 1000 lb Round Hay Bales w/ 2007 Chevy Silverado 1500 Classic
    If a 1000 lb round bale is the heaviest thing you'll haul in the truck bed, I'd recommend going with the SumoSprings # SS95MR that you'd looked at, which would provide you a little bit of leeway in case the bales vary in weight a bit as the springs offer up to 1500 lbs of support per pair. If you'll occasionally haul items heavier than that, I'd go a step up in capacity with the # SS45MR which can support up to 2800 lbs. The SumoSpirngs are more pliable than other jounce spring replacements,...
    view full answer...
  • Will the SuperSprings Sumo Springs SSR-209-54 Also Fit on a 2020 Chevy Silverado 1500
    I checked with my contact over at SuperSprings and he tells me that the SumoSprings Solo Custom Helper Springs SSR-209-54 you mentioned- part # SS45MR -is not specifically designed for the new body style of the 2020 Chevy Silverado 1500 but will fit. This was also confirmed by our install team that it can be installed on your 2020 Silverado 1500; it's just not designed specifically for this truck as the # SS45FR and # SS65FR are. Depending on what you're towing or the size of the payloads...
    view full answer...
  • Fitment Issues with Installing SumoSprings on a 2020 Chevrolet Silverado 1500
    When installing SumoSprings # SS45MR on your 2020 Chevrolet Silverado you will need a lift on the chassis of the vehicle and allow the rear axle to hang. The review may have been on an installation with the truck on the ground. It is difficult to get the SumoSpring in place with the axle not hanging.
    view full answer...
  • Sumo Springs Helper Springs for a 2018 Chevy Silverado 1500 4WD w/ In Bed Camper
    I have a great solution for your 2018 Chevy Silverado 1500 4WD that will add support when you are using your truck camper but not stiffen your ride when going without it. It is the SumoSprings Solo Custom Helper Springs - Rear Axle item # SS45MR. These springs have a 2,800 lbs capacity and offer a progressive load control. Under lighter loads the springs compress easily at first for soft engagement and a less bumpy ride. Under heavier loads like when you are using your camper the springs...
    view full answer...
  • SumoSprings or Timbrens Which is Better for a 2018 Chevy Silverado 1500?
    I have a solution for you but adding the Timbren Suspension Enhancement System item # TGMRCK15MR to your 2018 Chevy Silverado 1500 is not a good idea. This system is typically only used on work body trucks or vehicles that are used exclusively for towing or hauling. The Timbren's will effect your ride quality when you are not towing your trailer and will provide a rough ridged ride. I recommend using the SumoSprings Solo Custom Helper Springs item # SS45MR. These springs have a 2,800...
    view full answer...
  • Recommended Rear Suspension Enhancement for a 2021 GMC Sierra 1500 AT4
    There is a set of SumoSprings that fit your 2021 Sierra 1500 AT4 but item # SS45MR do not fit. The ones that fit are item # SS45FR. These have a slightly lower capacity at 1,500 lbs but will fit so long as your truck doesn't have the adaptive ride control option. I have a completely different system I would recommend you use. Since your 1500 AT4 has a 2" lift from the factory, SumoSprings will not be the best way of supporting your truck's rear suspension. The kit comes with a 1" spacer...
    view full answer...
  • Will SumoSprings Custom Helper Springs Fit 2018 GMC Sierra 1500 Denali With MagneRide Suspension
    The SumoSprings Solo Custom Helper Springs - Rear Axle # SS45MR are compatible with the MagneRide suspension on your 2018 GMC Sierra 1500. These have a 2,800 lb weight capacity and a microcellular urethane construction. The SumoSprings will be a great solution to help soften your ride while towing. They will help keep you level, absorb bumps and shocks, and also minimize sway. The # SS45MR features a no-drill installation and is maintenance free. These come with a limited lifetime warranty...
    view full answer...
  • Can SumoSprings Solo Custom Helper Springs Be Installed On A Truck With A Suspension Lift
    The SumoSprings Solo Custom Helper Springs # SS45MR simply replaces the factory bump stops so you wouldn't have an issue with a lifted truck. If the space between the frame and axle increased due to the lift then the springs just wouldn't engage as soon.
    view full answer...
  • Will SumoSprings Fit 2017 GMC Sierra 1500 Denali With MagneRide Suspension
    The SumoSprings # SS45MR are compatible with the MagneRide suspension on your 2017 GMC Sierra 1500. These have a 2,800 lb weight capacity and a microcellular urethane construction. The SumoSprings are a great solution to help keep you level while towing. They also absorb bumps and shocks while minimizing sway. The # SS45MR features a no-drill installation and is maintenance free. These come with a limited lifetime warranty and are made in the USA. I have attached an installation video...
    view full answer...
  • Recommended Suspension Enhancement for 2015 Chevy Silverado 1500 With 6 Inch Lift
    With a 6" lift on your 2015 Silverado 1500 I recommend the RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS54FR. The SumoSprings # SS45MR are designed for stock height and would not be of any value with that lift. The RAS system attaches to your leaf springs so the lift won't impact their performance. This kit will eliminate axle wrap and wheel hop while reducing sway and body roll. The leaf springs adjust based on the vehicle load and have a 3,000 lb capacity....
    view full answer...
  • Will Rear Suspension Enhancement For 2006 GMC Sierra Prevent Bouncing When Towing Camper Trailer?
    The Timbren Rear Suspension Enhancement # TGMRCK25S will indeed help to fight the bouncing you are experiencing when towing your 3600lb camper trailer with your 2006 GMC Sierra 1500 2WD but I do not recommend going with this option. The reason for this is the # TGMRCK25S is rated for 6000lbs of weight which is way over the tongue weight of your trailer and as such you will have a very stiff loaded and unloaded ride. Instead I recommend going with the SumoSprings # SS45MR which have a 2800lb...
    view full answer...
  • Best Adjustable Suspension Enhancement For 2015 Chevrolet Silverado 1500
    The SumoSprings Solo Custom Helper Springs # SS45MR don't have any adjustments on them unlike the RoadActive Suspension Enhancement Kit # RAS4611 does. I would go for the RoadActive if it were me. Both of these will fit your 2015 Chevrolet Silverado 1500. For the best unloaded ride quality, the Sumo Springs would be best as they aren't activated until your suspension sags enough to make contact. The RoadActive option will always be engaged.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video by:
Joshua S
Employee Jonathan Y
Video by:
Jonathan Y
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Daron K
Edited by:
Daron K
Employee David F
Test Fit:
David F
Employee Ryan G
Test Fit:
Ryan G
Employee Kevin C
Test Fit:
Kevin C
Employee Alex H
Written by:
Alex H

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