AST Suspension Lowering Springs (30mm/20mm TUV) - 2005-2012 BMW 3 Series 335/325D/330D/335D Sedan (E90) RX-4 2009 Audi A4 Quattro (w/

2009 Audi A4 Quattro (w/ EDC Includes Magnetic Ride Delete Module)

The ST X Coilover Suspension for the 2002-2008 Audi A4 Quattro Sedan 1

Based on a smart lightweight design and made of Aluminum for the most part

1989 Nissan D21 E (D21)

2011 Dodge Caliber FWD

AST Suspension Lowering Springs (30mm/20mm TUV) - 2005-2012 BMW 3 Series 335/325D/330D/335D Sedan (E90) RX-4 2009 Audi A4 Quattro (w/AST Lowering Springs for the 2005 2012 BMW 3 Series (E90) 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.