This is a great way to level out the front of your 2005-2016 4WD F-250/350 Superduty and add off-road performance while fitting up to a 35" tire. This system includes Bilstein 5100 shocks for the front and rear that are valved for both on and off-road use and a pair of our Camburg performance coil springs. We offer a specific spring for diesel or gas engines. This easily bolts on and makes a significant improvement in the ride quality. Lift amounts, tire and wheel sizing, suspension specifications, etc. are generalized as they can vary slightly from vehicle to vehicle with so many production variables between manufactures, products and vehicle options/packages from the factory. We’re supplying you the best information at our disposable along with the information supplied to us from the brands we sell.