It's summertime in the USA and if you aren't pouring at least a little money into your truck during the warmer months, you might as well just go buy a car. Whether it's basic maintenance or a significant upgrade, your truck deserves some attention before the cold weather arrives. To that end, we've assembled the top five best-selling lift and leveling kits for pickup trucks and SUVs. Each of these kits are made in the USA and backed by a lifetime warranty. Remember: ask not what your truck can do for you, but what you can do for your truck. Take advantage of Affirm Financing to make serious truck upgrades with low monthly payments.