AST Suspension Lowering Springs (40mm/30mm) - 1990-1994 Alfa Romeo Spider Diamante 2003 BMW Z4 (E85)

2003 BMW Z4 (E85)

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AST Suspension Lowering Springs (40mm/30mm) - 1990-1994 Alfa Romeo Spider Diamante 2003 BMW Z4 (E85)AST Lowering Springs for the 1990 1994 Alfa Romeo Spider 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.