AST Suspension Lowering Springs (40mm/40mm) - 1976-1986 BMW 7 Series (E23) 2001 Shock Absorber on your 2006-2011

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AST Suspension Lowering Springs (40mm/40mm) - 1976-1986 BMW 7 Series (E23) 2001 Shock Absorber on your 2006-2011AST Lowering Springs for the 1976 1986 BMW 7 Series (E23) 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.