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When extra weight pushes down on your suspension, the ride can get harsh fast. These Coil SumoSprings slide right between your existing coils to add cushioning and load support. The inner core is made of microcellular polyurethane foam that compresses progressively—the more weight you add, the stiffer it becomes. That means smoother handling and a level stance whether you’re hauling gear or towing.
Heavy trailers or bed loads can make your rear end squat and hurt stability. The wedge-shaped inserts fit between the individual coils on either the front or rear suspension, helping your springs resist compression under load. This keeps your ride height steady and reduces the sag that throws off steering and braking. With the added support, your suspension works more evenly so you stay in control when the weight shifts.
Soft factory coils can let your vehicle lean too much through corners or bounce over dips. The helper springs add resistance as they compress, which helps tame body roll and keeps things balanced side to side. The result is a ride that feels planted, even when you’re cornering, dealing with crosswinds, or pulling a trailer down uneven roads.
Unlike air systems that need air lines, valves, or tanks, these helper springs are solid polyurethane inserts—no maintenance needed. They install easily on your front or rear coil springs using basic tools. Once in place, they work automatically without adjustments, giving you dependable load support every time you hook up the trailer or pack the bed full of gear.
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Ratings & Reviews
Bruno F.
1/28/2020
So far so good it eliminates sag while towing or having heavier objects in the vehicle.
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Gwendolyn Y.
3/25/2025
Hey John. I'm sorry to hear that our video was misleading and lead you down the wrong direction. The easiest way to get these installed is to jack up one side at a time so that the tire just barely hangs without touching the ground. That way the coils can stretch out and give you more room to install the helper springs. Also using soapy water on both the springs and the helpers will help them slip into place. If you still run into issues, let me know!