AST Suspension Lowering Springs (25mm/20mm) - 2002-2008 Audi A4 Cabrio 2.5TDi/3.2FSi Sunbird 2017 Mazda Miata/MX-5 (ND)

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AST Suspension Lowering Springs (25mm/20mm) - 2002-2008 Audi A4 Cabrio 2.5TDi/3.2FSi Sunbird 2017 Mazda Miata/MX-5 (ND)AST Lowering Springs for the 2002 2008 Audi A4 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. Features