2015 RAM 1500 has a “mushy” ride

Few options. The easiest, Coil SumoSprings. They come in seven different sizes, and I am confident we could match one to your Mopar Coils. The stock coil uses Coil SumoSprings part number CSS-1145. If you want to provide measurements, we can confirm an appropriate fit for you. Go to http://www.supersprings.com/products/coil-sumosprings/#coil-sumo-measure. Another option would be to add SumoSprings Solo. These replace the OE bump stops and completely fill that void. The OE stop is about 3.5″ – 4″ tall. The Solo is 7″ tall. It will engage almost immediately with any weight (from load or sway). The Solo comes in two densities for your truck, SSR-307-40 and SSR-307-47. Lastly, we do make a heavy duty replacement coil spring, SuperCoils. I’m not sure you would want to do this since you invested in the Mopar 2″ lift. Check out the Coil SumoSprings page. I suspect that is what you are after and it will take the mush out of your springs.