Recommended SumoSprings for a Tandem Axle Trailer w/ 7,000 lbs Underslung Axles
Updated 02/09/2026 | Published 01/31/2026
Products Featured in This Question
Question:
for a 28’ enclosed trailer with tandem 7k underslung Dexter axles. Would these be the recommended jounce springs?
asked by: Jp
Expert Reply:
Hey Jp, welcome back! Since your trailer has 7,000 lbs underslung axles, you'll want the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket item # SS33HR. This kit is rated for 5,000 lbs - 8,000 lbs axles so it's going to provide way better support than the item # TSS-106-40, you were looking at.
The SumoSprings item # SS33HR are going to work great for reducing trailer sway, absorbing road shock, and they'll also help with that body roll top heavy feeling. These kits are sold individually so you will need two.
Please note you will need 7-7/16" - 8-5/8" between the top of your leaf spring plates and the bottom of your trailer's frame for the SumoSprings item # SS33HR to function correctly.
What kind of trailer do you have?
You can add this information, along with any other questions you have, where it says Add Comment.
Product Page this Question was Asked From
SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 3K to 5K - Underslung
- Trailer Suspension Parts
- Leaf Spring Enhancement System
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- 3000 lbs
- 4000 lbs
- 5000 lbs
- Single Axle
- SuperSprings Intl
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Underslung
- Shop: Vehicle Engine Heaters
- Shop: Kat's Heaters Thermostatically Controlled Circulating Tank Heater - 120V - 850 Watts
- Shop: Replacement Fan Blade for Ventline E-Z Lift Ventadome Trailer Roof Vents
- Shop: GE Profile Ducted RV Range Hood with Light - 12V - 22" Wide - Stainless Steel
- Shop: Replacement Fan Blade for Ventline Vanair Trailer Roof Vent
- Shop: Replacement Fan Motor for Ventline Range Hoods
- Shop: Ventline Pinnacle Ducted RV Range Hood with Light - 12V - 20" Wide - Black w/ Stainless Steel
- Q&A: How to Prevent Trailer Axle from Hitting the Frame
- Q&A: Will Ultra-Fab Steel Roller Fit 2021 Ford Transit Extended
- Q&A: Where To Install SumoSprings Trailer Helper Springs TSS-106-40 On Trailer With Tandem Axles?
- Q&A: Recommended Suspension Support That Is Not Air Bags for a 2024 Ford F-350
- Q&A: Recommended Shackle Straps and X-Factor Crossmember Compatible w/ MORryde ALLTREK 4000 Equalizers
- Article: How to Accurately Measure Trailer Leaf Springs
- Q&A: Can I Upgrade 3,500 lb Axles to 5,200 lb Axles on a Budget
- Q&A: Suspension Enhancement for 2022 Ram 1500 Towing 2022 Jayco Jay Flight 224BHS
- Article: Trailer Maintenance Schedule
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Article: Trailer Wiring Diagrams
- Article: Most Popular Wheel Bearings
- Article: How to Raise Your Travel Trailer Height
- Article: Performance Chips and Modules
Jp
2/6/2026
28’ Freedom Enclosed trailer. Looks like I have about 7-1/4” of space between top leaf and bottom of frame rail when trailer is lifted and 6” at ride height. Is there another option I should look in to?