AST Suspension Lowering Springs (35mm/30mm TUV) - 2006-2013 Alfa Romeo 159 Sportwagon 1.9JTS/2.2JTS/1.9JTDM/2.0JTDM/1.8MPI/1.8TBi (939) RS3 Quattro 2013 Audi R8 V10 (w/o

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AST Suspension Lowering Springs (35mm/30mm TUV) - 2006-2013 Alfa Romeo 159 Sportwagon 1.9JTS/2.2JTS/1.9JTDM/2.0JTDM/1.8MPI/1.8TBi (939) RS3 Quattro 2013 Audi R8 V10 (w/oAST Lowering Springs for the 2006 2013 Alfa Romeo 159 (939) 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.