SuperSprings Rear SumoSprings Set for 4Runner, Land Cruiser 100, GX460 & FJ Cruiser — 1800 lb @ 50% Compression | Easy Install

Smart suspension upgrade for real world loads

SumoSprings from SuperSprings International offer a smart, air-free alternative to traditional airbags and heavy coil springs. Made from closed‑cell microcellular polyurethane, these one piece springs compress progressively as load shifts, helping to curb rear sag, maintain ride height, and support stable handling without the need for airlines or compressors.

What makes them stand out

Designed to endure tough conditions, SumoSprings resist UV exposure, moisture, and extreme temperatures. They’re built for longevity with a lifetime warranty and a maintenance‑free profile that keeps your focus on the road rather than on the spring system.

• Progressive load support that responds to weight changes for smoother transitions between loads
• Self-contained design with no moving parts or air lines to leak or adjust
• Ride-height stability that helps reduce rear-end sag and improves handling
• Durable, weather-resistant polyurethane that stands up to sun, rain, and road salt

Real world benefits you might notice

• More predictable handling when towing or hauling heavy cargo
• Safer sway control and reduced body roll during cornering or crosswinds
• Consistent ride quality across mixed road surfaces and speeds
• Low maintenance and quick plug‑and‑play installation that fits in the factory bump-stop area

Plug‑and‑play installation and fit

These rear SumoSprings are specifically designed to fit the following 4x4 platforms: 2003-2024 4Runner, 1998-2007 Land Cruiser 100 Series, 2010-2021 GX460, and 2007-2014 FJ Cruiser. At about 50% compression, they provide up to 1800 pounds of additional support, offering practical help during busy, load-filled days.

With no air system to service and no external pumps to monitor, you get a maintenance-free upgrade that installs where your factory bump-stop sits. They’re built to endure, with corrosion resistance and UV protection helping maintain performance mile after mile.

Note: individual results will vary with vehicle configuration and load. While this can enhance stability and comfort, it is not a guarantee of specific outcomes.