Vehicle Fitment: 02-06 Chevrolet Avalanche 2500; 01-06 Chevrolet Silverado 1500 HD; 07 Chevrolet Silverado 1500 HD Classic; 99-04 Chevrolet Silverado 2500 4WD; 05-08 Chevrolet Silverado 2500; 01-10 Chevrolet Silverado 2500 HD; 07 Chevrolet Silverado 2500 HD Classic; 01-09 Chevrolet Silverado 3500; 07-10 Chevrolet Silverado 3500 HD; 00-13 Chevrolet Suburban 2500; 01-06 GMC Sierra 1500 HD; 07 GMC Sierra 1500 HD Classic; 99-04 GMC Sierra 2500 4WD; 01-10 GMC Sierra 2500 HD 4WD; 01-06 GMC Sierra 3500; 07-10 GMC Sierra 3500 HD Torsion Bar(FrontSpringType); 00-06 GMC Yukon XL 2500; 03-09 Hummer H2 Specifications: Stroke (in): 4.79, Extended Length (in): 15.73, Upper Mount Code: S12, Lower Mount Code: ES60, Collapsed Length (in): 10.94 Interchange Part Number: 930052, RS7295, 911507, MONRS55288, 740063, 88963046, 89038652, 77817, 554247, 554319, KG54340, 540-5069 Product Feature: Delivers superior control and stability under towing and off road conditions. Designed for light off road, towing and hauling for trucks and SUVs Installation & Durability: Provides improved off road durability with easy installation for frequent towing and hauling. Monotube shock design ensures consistent performance in challenging conditions