Compatibility: Fits 2003-2013 Dodge Ram 2500 4WD Only Fits 2003-2012 Dodge Ram 3500 4WD Only *Fits models with 3.5" Rear Axle Only, will NOT fit 4" Rear Axle **Some models need blocks with 3-pin holes, ours will NOT fit. For more details, pls check compatibility Chart. Specifications: Placement on Vehicle: Front + Rear Front Lift Height: 2 inch Rear Lift Height: 1.5 inch Front Spacer Thickness: 2 inch Rear Block Thickness: 1.5 inch U-Bolt Size: 9/16"-18 Round - Long 13.58 inch Material: Steel Color: Black .