20-Current GM 2500HD;Lift Height: 2 inch front, 1.5 inch rear;Front lift method: torsion bar keys;Rear lift method: lift blocks with u-bolts;Includes: Pro Series front upper control arms, front & rear Pro-M Monotube shocks, all necessary hardware and instructions;Max Tire Size: 37 inch;Requires wheel alignment after installation;Actual products may differ from image;California Residents: WARNING