AST Suspension Lowering Springs (30mm/30mm TUV) - 2017+ BMW 5 Series 520i/530i/518D/520D Touring w/ Air Suspension HA (G31) ksport-kontrol-plus-2-way-adjustable-coilovers Fewer coils reduce unsprung weight

Fewer coils reduce unsprung weight and maximize usable shock stroke

Part Number W63549 Part Name Control Arm Bushing Vehicle 2008-2016 Volkswagen Eos Komfort Chassis Code 1F Bushing 1 Inner Diameter 12

2016 Ford Fiesta Zetec ST 1

2008 Audi A3 Quattro AWD Sportback 50mm Strut (8P)

5i Premium Chassis Code GE/GH/GR/GV Bushing 1 Inner Diameter 12 mm Bushing 1 Outer Diameter 34 mm Bushing 2 Inner Diameter 12 mm Bushing Color Black Bushing Material Polyurethane Bushing Quantity 8 Bushings Bushings Included Yes Grade Type Performance Inside Diameter 15

AST Suspension Lowering Springs (30mm/30mm TUV) - 2017+ BMW 5 Series 520i/530i/518D/520D Touring w/ Air Suspension HA (G31) ksport-kontrol-plus-2-way-adjustable-coilovers Fewer coils reduce unsprung weightAST Lowering Springs for the 2017+ BMW 5 Series (G31) 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