AST Suspension Lowering Springs (40mm/30mm TUV) - 1999-2005 BMW 3 Series 4CYL Touring (E46) A45 AMG 2005 Audi A4 Sedan Manual

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AST Suspension Lowering Springs (40mm/30mm TUV) - 1999-2005 BMW 3 Series 4CYL Touring (E46) A45 AMG 2005 Audi A4 Sedan ManualAST Lowering Springs for the 1999 2005 BMW 3 Series (E46) 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.