AST Suspension Lowering Springs (30mm/30mm) - 2013+ BMW 4 Series 435i/440i/430D Coupe (F32) IS F Part Number CBM120-KP Damping Adjustment

Part Number CBM120-KP Damping Adjustment 36-Way Height Adjustable Yes Spring Rate (Front) 10

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AST Suspension Lowering Springs (30mm/30mm) - 2013+ BMW 4 Series 435i/440i/430D Coupe (F32) IS F Part Number CBM120-KP Damping AdjustmentAST Lowering Springs for the 2013+ BMW 4 Series (F32) 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. Features