AST 25mm F&R Lowering Springs | Alfa Romeo 156 GTA Sportwagon 2002-06 (ASTLS-14-026)AST Lowering Springs for the 2002 2006 Alfa Romeo 156 (932) are manufactured from a premium high tensile chromium silicone wire which is handpicked by AST engineers for its quality and metal consistency. Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.