H&R'street Performance + Coil Overs include all the features of the H&R'street Performance Coil Overs plus a height adjustment range for modest lowering with enhanced performance tuning. The H&R'street Performance + Coil Over is specifically designed at the request of seasoned tuners and enthusiasts who prefer a little less lowering and improved performance. H&R'street Performance + Coil Overs are the epitome of fine tuning, some kits include front aluminum camber plates for fine alignment tuning.