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Heavy-Duty Suspension Support for Commercial Trailers

Bigger Capacity. More Control. Better Journeys.
The new HD Trailer SumoSprings are engineered for serious weight, extreme duty cycles, and commercial-grade trailer applications. Designed to fit 2", 2.5", and 3" wide leaf springs, they deliver massive load support, improved control, and enhanced ride quality for toy haulers, construction rigs, fleet trailers, and heavy-duty commercial trailers.

Why Choose HD Trailer SumoSprings

Trailers and towables face constant stress from shifting cargo, water tanks, RV gear, and uneven road surfaces. Factory suspension components often struggle to keep these loads stable over time. Trailer SumoSprings address this with:
Massive Load Support
Choose from 3,000 lbs or 4,000 lbs of support at 50% compression—perfect for heavy-duty trailers and commercial equipment. These springs handle constant loads, multiple payload shifts, and demanding operational cycles.
Enhanced Trailer Control
Reduce sway, absorb frame stress, and protect your cargo—whether your trailer is on a job site, a highway, or rugged terrain. HD Trailer SumoSprings give operators predictable handling under load, improving fleet safety and driver confidence.
Quick & Easy Installation
Designed to fit a wide range of heavy-duty leaf spring widths (2", 2.5", 3") and installs with standard hardware. These bolt-on units simplify installation in production, maintenance, or upfit environments.
Improved Ride Qualityials
Cushion impacts, reduce driver fatigue, and maintain cargo safety—no matter the weight or terrain. Progressive load support ensures smoother rides for operators and better protection for trailer contents.

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.

Built for Hard Work

Thousands of air bubbles are engineered into every HD Trailer SumoSpring, providing unmatched strength, durability, and consistent performance across all operating conditions. Commercial fleets, upfitters, OEMs, and dealers can rely on these heavy-duty springs to handle the toughest loads, toughest roads, and most demanding operational schedules—without maintenance concerns.

Find the Right Kit for You

From washboard roads to salty slush

Ideal Commercial Applications

Built for Tough Roads. Made for Tougher Hauls.
● Construction & Jobsite Trailers — Hauling equipment, tools, and modular work units across rough terrain.
● Fleet & Rental Trailers — Trailers in constant rotation, exposed to heavy payloads and varying loads.
● Toy Haulers & RV Towables — Maintaining ride stability and cargo protection for high-value recreational vehicles.
● Commercial Equipment Trailers — Trailers carrying heavy-duty machinery, materials, or modular builds.
Find the Right Kit for You
Support that doesn’t leak, sag, or demand constant attention.

Select the Right HD Trailer SumoSprings Kit

✅ Identify your trailer’s leaf spring width (2", 2.5", or 3") and expected maximum load.
✅ Choose between 3,000 lb or 4,000 lb support ratings depending on your payload and duty cycle.
✅ Install with standard hardware in minutes — no airlines, compressors, or maintenance required.
✅ Operate with confidence: your trailer is now equipped with commercial-grade suspension that reduces sway, protects the frame, and improves ride quality under heavy loads.
Find the Right Kit for You

Trailer SumoSprings deliver quiet confidence under load.

Commercial-Grade Suspension. Simplified for Fleet & OEM Builds

Trusted by Builders, Tinkerers, and Tow Pros
HD Trailer SumoSprings give dealers, upfitters, OEMs, and fleet managers a dependable, maintenance-free solution to support heavy loads, stabilize trailers, and protect cargo. Built for real-world commercial conditions, these springs deliver professional-grade performance and reliability for every mile.
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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

Spring-UNDER Axle Kits

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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