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Your cart is empty.Upgrade your trailer's suspension system with the revolutionary progressive spring rate jounce-style springs. Whether you're hauling heavy loads or just going on a leisurely road trip, these springs provide exceptional support and cushioning to ensure that you always have a smooth and comfortable ride. One of the key features of these springs is their progressive spring rate, which means they become more rigid as more weight is added. This provides the necessary stability required to haul heavy loads with ease, while also ensuring that your ride is as comfortable as possible. Additionally, the jounce-style springs are designed to allow the leaf spring ample movement while cushioning light loads, further improving the performance of your trailer's suspension. The springs work independently from side-to-side, helping to compensate for off-center loads and reducing body roll when swerving and turning corners. They also act as shock absorbers, taking the brunt of bumps and rough roads, and reducing the load on the leaf spring assembly. This reduces the stress on your trailer's suspension, prolonging its life and saving you money on repairs and replacements. Designed to work with a suspension system that is in good working order, these springs are easy to install and require no drilling or tubing. Simply attach the included mounting brackets and hardware, and you're ready to go. For tandem axle applications, simply use two kits. With a limited lifetime warranty and a 30-day satisfaction guarantee, you can trust that these springs are built to last and will provide the support and comfort you need for years to come. Made in the USA, these springs are a reliable and effective upgrade for your trailer's suspension system.
dssman96
Reviewed in the United States on March 18, 2024
I ordered 2 sets of the blue light density springs, but received 1 set of blue and 1 set of black springs. $500 and still waiting on my refund after almost 2 weeks.
William Beyer
Reviewed in the United States on June 15, 2023
Put these on my travel trailer and the install was straight forward. It took longer to shift my LPG line over. All required parts were provided with the summo spring kit. It takes two kits for a tandem trailer. There was a pleasant difference towing the RV after the install, reduced the bouncing after bumps and also provided a more stable platform when in use. I would recommend the addition of summo springs.
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