Reduces sag, sway, and roll when towing and hauling Comfortable ride, loaded or unloaded DIY installation Zero post-installation maintenance Weight from a snowplow or heavy aftermarket accessories can cause dangerous front-end sag and sway. When heavy weight is distributed only onto the front two tires, it can create difficult handling conditions and risk damage to your front-end suspension from bottoming out. Timbren SES front kits level out your front-end load, making for a safe, controlled ride. How? Timbren Aeon rubbers springs deliver a progressive spring rate. As load increases, Timbren rubber springs push back harder, eliminating squat, sway, and roll to put you back in control of your vehicle. After installation, the rubber spring should be in contact with the front axle. 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, Timbren SES kits level your load, making for a safe, controlled ride so smooth, you might forget you’re towing altogether. How? Timbren Aeon rubber springs deliver a progressive spring rate. As load increases, the rubber springs push back harder, eliminating squat, sway, and roll. After installation, there should be a 1/2" to 1-1/2" gap between the rubber spring and vehicle’s frame — meaning you’ll enjoy a comfortable unloaded ride, too. What makes Timbren SES kits different from other suspension enhancement systems? Unlike air bags, Timbren kits require zero post-installation maintenance. And unlike other systems, you can install and haul in under 30 minutes, right from your driveway. This Front & Rear Suspension Enhancement System kit fits 2011 - 2016 F250 Super Duty.