AST Suspension Lowering Springs (20mm/20mm TUV) - 1982-1990 BMW 4 Series 418i Gran Coupe (E30) 300 Part Number W73251 Part Name

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Whiteline Springs are engineered for optimal balance with OEM and aftermarket shocks

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AST Suspension Lowering Springs (20mm/20mm TUV) - 1982-1990 BMW 4 Series 418i Gran Coupe (E30) 300 Part Number W73251 Part NameAST Lowering Springs for the 1982 1990 BMW 4 Series (E30) 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.