Heavy‑Duty Suspension Support for Commercial Builds

SumoSprings Maxim is engineered for commercial trucks, motorhomes and specialty vehicles that carry constant heavy loads, operate full‑time under stress, and demand zero‑compromise suspension performance. For dealers, upfitters, OEMs and fleet managers, Maxim delivers a maintenance‑free, bolt‑on solution built for serious duty.

Engineered for Constant Payloads & Commercial Duty

When vehicles run fully loaded — from tool racks, equipment bodies, modules and trailers — the standard helper springs, airbags or overload kits just don’t provide the durability or ride quality required. SumoSprings Maxim addresses that with:

Large‑Diameter, Closed‑Cell Design

Maxim’s oversized polyurethane spring distributes load over a wide surface area so full‑time payloads don’t produce bottoming, frame stress or premature wear.

No Air Systems / No Adjustments

Built without airlines, compressors or tuning. Install once and maintain the vehicle with confidence.

Superior Ride Under Full Load

Smooths out routes loaded with gear, freight or passengers by reducing harsh impacts, controlling sway, and protecting the frame.

Durable Materials for Commercial Use

Made in the USA of microcellular polyurethane that resists corrosion, UV, temperature extremes and heavy duty cycles. Backed by a lifetime warranty.

Maxim springs handle full-time payloads with progressive compression and wide load contact.

Built for Dealers, OEMs, Fleet Managers & Upfitters

SumoSprings Maxim offers clear advantages for business‑critical builds and commercial fleets:

✅ Simplified Installation — Bolt-on design enables quick turn-up in upfit bays or fleet maintenance shops, reducing vehicle downtime.
✅ SKU Efficiency — One Maxim part number accommodates high-payload builds that previously required multiple helper components or air systems, making inventory simpler and costs lower.
✅ Designed for Real-World Commercial Use — Whether you’re up-fitting a motorhome, service truck, heavy tool-body, or module carrier, Maxim is engineered to perform under full-time load and shifting usage profiles.
✅ Supply-Chain & Warranty Friendly — Backed by proven reliability, engineered in the USA, and trusted by commercial fleets and builders. Your clients expect long-term uptime — Maxim delivers.

Durability & Construction

Typical Commercial Applications

Maxim springs are rugged, road-tested, and ready for the long haul.

1. Class A motorhomes on F-Series, Sprinter, or Ford F53 chassis running full passenger and gear loads.
2. Service or utility trucks with large bodies, trailers, constant rack loads, lift gates, or overwrite equipment.
3. Rental or fleet vehicles where uptime and low maintenance are top priorities.
4. Modular upfits and vocational trucks that carry heavy gear day-in and day-out and must maintain ride quality, handling, and driver comfort.
5. RV conversions, specialty vehicles, and adventure rigs where load is constant and failure is not an option.

Maxim eliminates failure points and delivers better support — without the bulk or upkeep.

Select the Right Maxim Kit for Your Build

1. Identify your base vehicle suspension type (coil or leaf), chassis, and expected constant payload.
2. Choose the Maxim kit engineered for your duty cycle — full-time loads, heavy bodies, or module carriers.
3. Install the bolt-on spring system; no airlines, no compressors, no periodic tuning.
4. Your vehicle is now equipped with commercial-grade suspension support built to last — focus on operations, not maintenance.

Trust & Adoption

Professional‑Grade Stability. Simplified for Commercial Builds.

SumoSprings Maxim gives dealers, upfitters, OEMs and fleet managers a dependable solution to control sag, reduce sway, improve handling, and eliminate maintenance‑driven downtime in heavy‑payload vehicles. Whether you’re managing service trucks, RV operators, rental fleets or specialty builds — Maxim delivers professional performance aligned with your commercial standards.