AST Suspension Lowering Springs (20mm/20mm TUV) - 1982-1990 BMW 4 Series 418i Gran Coupe (E30) Trezia Sway Bars to your 2005

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AST Suspension Lowering Springs (20mm/20mm TUV) - 1982-1990 BMW 4 Series 418i Gran Coupe (E30) Trezia Sway Bars to your 2005AST 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.