SumoSprings Suspension Kit | SuperSprings | Rear | Ford

SKU SSR-121-54

SumoSprings Solo kit SSR-121-54 for the Ford Transit 350 features a one-piece patented micro-cellular polyurethane foam helper spring to produce a smooth ride and provide additional load support. The Solo design is attached to the vehicle on only one side.

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Product Specifications

Capacity:2,800 lbs.
Height:5.00 inches
Diameter:4.00 inches
Note:Kit includes a pair, 2 SumoSprings. SumoSprings jounce replaces existing factory bumpstop.

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Product Specs for SuperSprings SSR-121-54

Capacity:2,800 lbs.
Height:5.00 inches
Diameter:4.00 inches
Note:Kit includes a pair, 2 SumoSprings. SumoSprings jounce replaces existing factory bumpstop.
Instructions:SumoSprings SSR-121-54 Installation Instructions.
Drilling Required:No
MPN: SSR-121-54

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SuperSprings SSR-121-54 Details

SumoSpring Solo

The Solo Sumospring is a one piece component that is fixed to one side, used to replace or upgrade the vehicles factory bump stops. SumoSprings Solo is a one-piece, homogenous unit attached on only one side via various mechanisms. The Solo is manufactured in a variety of heights, diameters and densities to support multiple applications.

All SumoSprings are manufactured from proprietary closed microcellular urethane which yields a combination of uniquely distinctive properties. The materials density, tensile strength, elongation, tear resistance, rebound, and compression characteristics have been designed specifically to produce a smooth ride and provide additional load support.

Greater resistance with heavier loads = progressive load control

SumoSprings Helper Springs: Features & Benefits

Compresses up to 80% of their original height with full memory rebound
Expands up to 50% of their original height when connected both at the top and bottom
Easier initial compress allowing softer engagement; greater resistance with heavier loads = progressive load control
Will never leak and cause a loss of performance
Minimal lateral expansion under load will allow for operation in confined spaces
Highly resistant to oils, salts and UV rays
Temperature range of -25°F and 200°F
Maintenance free
Designed to “fit-it-and-forget-it”
Manufactured in the USA

SumoSpring Densities

In addition to the above mounting styles, SumoSprings are also available in three densities. SumoSpring helper springs densities are distinguished according to color as shown below, ranging from light and medium, to heavy duty. When multiple densities are available, pick the density that best suits your needs and ride preferences.

The Blue-40 density traps more air in the millions of micro-cellular bubbles, making an air spring sufficient for light and medium duty performance.

BLUE-40

sumo springs - light, medium, heavy duty

The Black-47 density evenly distributes the amount of urethane and air bubbles to produce an air spring sufficient for light, medium, and heavy duty performance.

BLACK-47

The Yellow-54 density captures a smaller amount of air in the air spaces making a harder air spring sufficient for medium and heavy duty performance.

YELLOW-54

LIGHT & MEDIUM DUTY

LIGHT, MEDIUM & HEAVY DUTY

MEDIUM & HEAVY DUTY

Vehicle Application Guide for SuperSprings SSR-121-54

The SSR-121-54 SumoSprings Suspension Kit | SuperSprings | Rear | Ford is engineered to work with specific vehicles displayed below. Can't find your vehicle, or need assistance, please give us a call at 1-800-358-4751 or 1-989-755-0561.

Year	Make	Model	Vehicle Option	Installation Notes
2021	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2020	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2019	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2018	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2017	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2016	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2015	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2015	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2016	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2017	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2018	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2019	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2020	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2021	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2021	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2020	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2019	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2018	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2017	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2016	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2015	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2015	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2016	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2017	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2018	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2019	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2020	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2021	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2022	Ford	Transit-150	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2022	Ford	Transit-250	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2022	Ford	Transit-350	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2022	Ford	Transit-350 HD	Fits 2 Wheel Drive; Fits 4 Wheel Drive	2,800 lbs. capacity at 50% compression.
2023	Ford	Transit-150	Fits 4 Wheel Drive; Fits 2 Wheel Drive	2,800 lbs. capacity at 50% compression.
2023	Ford	Transit-250	Fits 4 Wheel Drive; Fits 2 Wheel Drive	2,800 lbs. capacity at 50% compression.
2023	Ford	Transit-350	Fits 4 Wheel Drive; Fits 2 Wheel Drive	2,800 lbs. capacity at 50% compression.
2023	Ford	Transit-350 HD	Fits 4 Wheel Drive; Fits 2 Wheel Drive	2,800 lbs. capacity at 50% compression.

Customer Q&A - SuperSprings SSR-121-54

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Question:

Will part number SSR-121-54 Work on a 2017 ford transit 350HD with dual rear wheels. Have a Thor 23' motorhome that sets too low at back axle. Most figments I have found won't work on HD series.

Answer:

These Sumo Springs SSR-121-54 will work on the Dually Transit 350 HD models. I checked with Super Springs and confirmed the fitment. Since these will replace the bump stops there should be no issues with the install.

SuperSprings

SuperSprings International was founded in 1996 and has developed a patented line of self-adjusting suspension stabilizers that solve many of the handling and suspension problems associated with loads carried by passenger vans, pickup trucks, minivans, and SUVs.

SuperSprings Internationals products give users extra loading and towing capacity and prevent rear-end sag without hardening the ride on vehicles having leaf spring rear suspension systems.

SuperSprings was developed for the American market with production initially established in California to serve the market on the West Coast. Marketing efforts have continued to expand and SuperSprings Helper Springs and SuperSway sway control are now distributed through a national dealer and distributor network throughout North America.

Product applications for SuperSprings have evolved from being solely for pickup trucks to a broad cross section of vehicles including SUVs, 15 passenger vans, minivans, and RVs including Class C motor homes and campers. SuperSprings have also been accepted by large-scale manufacturers in the van conversion business.

For more information, visit SuperSprings.

SuperSprings Warranty

5 Year Limited Warranty

On all SuperSprings products installed on non-commercial applications.

3 Year Limited Warranty

On all SuperSprings products installed on commercial applications, on all SumoSpring products and on all SuperCoils products.

2 Year Limited Warranty

On all SuperSway-Stops products.

What the warranty does not cover

Vehicle use in excess of GVWR, combined vehicle weights/ tow ratings or other OEM design specifications or limitations. Normal wear and tear, deterioration of spring shape or rating, alteration, product modification, improper installation or failure to maintain. Scratches or defects in product finishes (powder coating, paint, etc.) or damage due to shipping. Abnormal or misuse, including products used other than as recommended in the current SuperSprings™ application guide or the instructions. Racing or other vehicle competitions or contests. Accidents, impact by rocks, trees, obstacles or other aspects of the environment. Heavily loaded commercial use on unpaved road conditions.

You can view the full details of SuperSpring ’s warranty here.

How to get service

If a SuperSpring product fails as a result of a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.