Progressive Suspension Support for Towables & RV Trailers
Engineered for Real-World Trailer & RV Duty
At-A-Glance
Trailer SumoSprings vs Original Equipment
100%+
HIGHER AVERAGE DISPLACEMENT AT EVERY INTERVAL
462%
HIGHER DISPLACEMENT BETWEEN SECOND 4-5
68%
AVERAGE REDUCTION IN G-FORCE
Smart support that works quietly beneath the trailer frame.
OEM-Trusted on RV Towablesur Load
Trailer SumoSprings are not just an aftermarket solution—they come standard on many OEM 5th wheel trailers, campers, and towables. Fleet operators, RV manufacturers, and dealers rely on SumoSprings to deliver:
✅ Consistent Ride Quality — Every vehicle from factory comes with suspension that reduces sag and sway under loaded conditions.
✅ Enhanced Load Stability — Helps distribute weight evenly across the axle, improving towing confidence for end-users.
✅ Reduced Maintenance Needs — OEMs choose SumoSprings for reliability, minimizing customer complaints and warranty service.
✅ Commercial & Consumer Confidence — Trusted by Winnebago, Forest River, and other leading RV builders for real-world durability and ride performance.
From washboard roads to salty slush
Ideal Applications for Dealers, Upfitters & Fleets
Built for Tough Roads. Made for Tougher Hauls.
● Commercial Trailers — Service trailers, gear haulers, and equipment transport trailers for fleets that need predictable ride and reduced maintenance.
● Rental & Fleet Trailers — Vehicles exposed to frequent loading/unloading cycles benefit from progressive load support to extend lifespan.
● Upfitted Towables — Custom trailers and modular builds that require reliable, maintenance-free suspension components.
Support that doesn’t leak, sag, or demand constant attention.
Why Choose Trailer SumoSprings
● Progressive Performance — Handles varying loads without affecting factory ride quality or articulation.
● Commercial-Grade Reliability — Built for constant use, rugged routes, and professional-duty cycles.
● Made in the USA with Lifetime Warranty — Ensures fleets and OEMs can depend on long-term performance.
Select the Right Kit:
1. Identify trailer type and axle rating.
2. Determine expected payload and load patterns.
3. Install Trailer SumoSprings with bolt-on simplicity—no air systems or adjustments.
4. Achieve improved ride, reduced sway, and professional-grade load support—mile after mile.
From job sites to RV parks, Trailer SumoSprings deliver quiet confidence under load.
Professional Suspension Support for Fleet & OEM Applications
Trusted by Builders, Tinkerers, and Tow Pros
Find the Right Trailer SumoSprings
Two applications. Enough to cover just about every trailer out there.
Trailer SumoSprings are manufactured from our micro-cellular polyurethane. Designed to remove sway, hop, & vibration, this zero-maintenance airbag alternative increases overall driver control and ride comfort when towing. If your towable has axles with a weight rating of 5,000lb or greater, you’ll need the black (-47) option. This will you give you the best load support and control.
Spring-Over Axle Kits
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TSS-107-40 | Trailer SumoSprings
Capacity: 1400 (lb) Capacity at 50% Compression
Position: RearAdd to Quote RequestGAWR: 3,000 - 5,000 (Ib)
Note: Will not work on spring plates wider than 4.25" & the gap between the top of spring plate and bottom of the frame must be between 5.3" and 6.55".
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TSS-107-47 | Trailer SumoSprings
Capacity: 1800 (lb) Capacity at 50% Compression
Position: RearAdd to Quote RequestGAWR: 5,000 - 8,000 (lb)
Note: Will not work on spring plates wider than 4.25" & the gap between the top of spring plate and bottom of the frame must be between 5.3" and 6.55".
Spring-UNDER Axle Kits
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TSS-106-40 | Trailer SumoSprings
Capacity: 1400 (lb) Capacity at 50% Compression
Position: RearAdd to Quote RequestGAWR: 3,000 - 5,000 (Ib)
Note: The gap between the top of the leaf spring and bottom of the frame must be between 6" and 8.65". For 1.75" wide leaf springs only.
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TSS-106-47 | Trailer SumoSprings
Capacity: 1800 (lb) Capacity at 50% Compression
Position: RearAdd to Quote RequestGAWR: 5,000 - 8,000 (Ib)
Note: The gap between the top of the leaf spring and bottom of the frame must be between 6" and 8.65". For 1.75" wide leaf springs only.
Trailer SumoSprings Contact Plate
If your Travel Trailers has a frame that is off-set from the axle, this requires a contact plate for the installation of your Trailer SumoSprings.
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