backed by a lifetime guarantee

Tundra

From hauling heavy loads to weekend adventures, suspension upgrades for your Toyota Tundra deliver the strength, stability, and comfort to keep up with whatever the road — or trail — throws your way.

Why Tundra Owners Upgrade
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Purpose-built suspension solutions for Toyota’s toughest truck.

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No More Rear-End Sag

Stay level and in control when towing trailers, hauling gear, or loading up for a trip.

Absorb Harsh Impacts

Cushion the ride when hitting bumps on job sites, trails, or rough roads.

Control Sway Under Load

Reduce side-to-side movement when towing and improve handling with gear in the bed.

Simple DIY Installation

Bolt-on kits install quickly with common tools — no cutting, welding, or maintenance required.

Our most trusted upgrades for towing, hauling, and all-day driving comfort.

Tundra Suspension, Made Stronger

Whether your Tundra is a job-site tool, family hauler, or weekend adventure rig, these upgrades provide the extra support you need — without sacrificing ride quality or articulation.

Featured Products:
✅ SuperSprings Helper Springs – Self-adjusting leaf spring upgrades for heavy cargo and towing.
✅ SumoSprings Rebel – Two-piece springs for maximum load support and off-road articulation.
✅ Coil SumoSprings – Progressive coil inserts that reduce sag and improve control under load.

Find the Right Kit for You

Engineered for Every Tundra Model

From work trucks to lifted off-road builds, our kits are made to fit your truck.
Each kit is precision-designed to match your Tundra’s suspension geometry, ensuring factory handling is preserved while adding the extra capacity you need for hauling, towing, and rough terrain. No spacers, no compromises — just bolt-on performance.
Find the Right Kit for You

What Our Customers Are Saying

I totally agree with the above post. I own a 2012 4x Tundra and yes unfortunately ride quality suffers when the bed is empty. Was doing the sand bag trick until I could afford a shell. Then found the SUMOs and have been scratching my head ever since. Why haven’t the truck manufacturers of vehicles Toyota Ford etc …. been using these. I have been in the industry for over 20 years and know the rear of these trucks are setup like a baby buggy and have not progressed since the early 1900s ~ WTF? These have been on my truck for the last year and i no longer feel like Im driving a truck. Nice to know I can drive a truck with comfort now. HATS OFF TO SUMOS ~ innovation above the masters

Sean Praefke

2012 Toyota Tundra

I was hoping to get rid of a little sag and still have a comfortable ride when not pulling our 5th wheel camper. The SumoSprings work great. no sag and my ride with or without the camper is nice and smooth. Highly recommended. Also – I took the truck to a shop to have them installed and it was done in 30 minutes!

Dick Knopik

Toyota Tundra

I purchased the blue rear sumo springs for my Toyota Tundra to help out with towing a 30-ft toy hauler. Loaded down max weight is 8800 lb. My max truck tow capacity is 9800. Even with a weight distribution hit it’s still squatted down too much. With the sumo springs it tows very smooth. Minimal sag, easy installation. I contacted customer support since there was an error on my part of entering the ZIP code and didn’t look like they shipped to Alaska. I thought that strange since it said international Sumo Springs. Customer service was prompt and assured me they did ship to Alaska. With a discount code my shipping cost was only a few dollars.

Jason Rode

Toyota Tundra

Solutions for Every Tundra Owner

From construction sites to camping trails, our upgrades keep your truck performing at its best.

Heavy-Duty Towing

Tow boats, campers, and equipment trailers with better control and less sag.

Contractor Work Trucks

Haul tools, materials, and job-site gear without bottoming out.

Overland & Off-Road

Support rooftop tents, recovery gear, and supplies while maintaining articulation.

Family & Weekend Hauling

Keep rides comfortable and stable for road trips with loaded beds or trailers.

Confidence, Comfort, and Control — All in One Upgrader.

Upgrade Your Tundra Today

Your Tundra can do it all. With the right suspension upgrades, you can keep it level, stable, and comfortable no matter the load, the road, or the trail.

Find the Right Kit for You

Explore Other Toyota Suspension Upgrades

We engineer bolt-on solutions for the entire Toyota lineup.

Toyota Tacoma

Level out your load, reduce sway, and gain control — whether you’re hauling gear for work or heading off-road for the weekend.

Toyota 4Runner

Improve ride comfort, reduce bottom-outs, and get trail-ready performance — all without spacers or complicated installs.

Find the Right Kit for You

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