SumoSprings use a high-tech closed-cell foam — not air — to do the heavy lifting.
Each SumoSpring is made from millions of microscopic air pockets trapped in microcellular polyurethane. As loads change, these air cells compress and rebound to deliver smooth, consistent damping — without relying on airlines, valves, or compressors. That means no leaks, no adjustments, and no downtime — just plug-and-play performance.
One-piece spring for light-to-moderate loads. Installs in factory bump stop locations with no moving parts.
Two-piece spring system with full suspension articulation. Best for lifted trucks and off-road builds.
Oversized spring with maximum surface area. Ideal for Class C RVs, flatbeds, and constant heavy loads.
Three spring densities. Three designs. One clear upgrade from air and steel.
Each SumoSpring is available in multiple densities — Blue for lighter loads, Black for balanced support, and Yellow for maximum capacity. Whether you drive a van, truck, RV, or trailer, there’s a spring that fits your chassis and matches your weight class. And with three mounting styles (Solo, Rebel, Maxim), it’s easy to pick the right setup — all without compressors, metal fatigue, or guesswork.
🔵 Blue: Light-to-moderate loads, softer engagement, ideal for passenger vehicles and small campers
⚫ Black: Moderate-to-heavy loads, balanced ride and control, perfect for vans, trucks, and mid-sized RVs
🟡 Yellow: Maximum load support, firmest engagement, recommended for Class C motorhomes, heavy flatbeds, and severe-duty commercial trucks
Join our email list for the latest news, tips, blog posts, and deals!