Timbren 1988-2009 Chevrolet W4 W4000 W4500 W5 W5000 W5500 2017-2026 GMC 3500 Express 4500 Express 5500 Express 2025-2026 GMC 4500 HD 1988-2026 Isuzu

Description Note: Even though you’re increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer. Features: Reduces sag, sway, and roll when towing and hauling Comfortable ride, loaded or unloaded DIY installation Zero post-installation maintenance Specification: Rated Capacity: 8,600 lbs Includes: 2 x Mounting discs 2 x Patented Aeon® SES suspensions (hollow rubber springs) All necessary hardware Suspension Support Location: Rear Suspension Kit Type: Standard Kit Unstable loads while towing and hauling don’t just make for an uncomfortable ride. Difficult handling, rear sag, and corner sway create dangerous driving conditions — for you, your passengers, and other vehicles. Whether you’re towing your RV across the country or hauling hay down the highway, our Timbren SES kits level your load, making for a safe, controlled ride so smooth, you might forget you’re towing altogether. How? Our Aeon® rubber springs deliver a progressive spring rate. As load increases, our rubber springs push back harder, eliminating squat, sway, and roll. After installation, the rubber spring will be in contact with the vehicle’s frame. This contact won’t affect ride quality — you’ll still enjoy a comfortable unloaded ride, too. What makes Timbren SES kits different from other suspension enhancement systems? Unlike air bags, our kits require no post-installation maintenance. And unlike other systems, you can install and haul in under 30 minutes, right from your driveway.?? Fitment Brand: Timbren 1988-2009 Chevrolet W4 W4000 W4500 W5 W5000 W5500 2017-2026 GMC 3500 Express 4500 Express 5500 Express 2025-2026 GMC 4500 HD 1988-2026 Isuzu NPR NPRHD NPRXD NQR NRR Reach Document Video