AST Suspension Lowering Springs (35mm/30mm) - 2014+ BMW 4 Series 435i/440i/425D/430D Gran Coupe (F36) swift-bump-springs Part Number CHD010-APP Damping Adjustment

Part Number CHD010-APP Damping Adjustment 36-Way Per Corner (1-Way damping) Height Adjustable Yes Air Tank 5 gallon polished tank Compressor VIAIR 444c compressor (single

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AST Suspension Lowering Springs (35mm/30mm) - 2014+ BMW 4 Series 435i/440i/425D/430D Gran Coupe (F36) swift-bump-springs Part Number CHD010-APP Damping AdjustmentAST Lowering Springs for the 2014+ BMW 4 Series (F36) 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