Recommended SumoSprings for a Tandem Axle Trailer w/ 7,000 lbs Underslung Axles
Updated 02/09/2026 | Published 01/31/2026
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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?
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SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 3K to 5K - Underslung
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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?