AST Suspension Lowering Springs (35mm/35mm) - 1997-2004 BMW 5 Series 520i/523i/525i/530i/520D/525TDS Touring (E39) st-suspensions-st-rear-anti-sway-bar 2007 Mazda RX-8 Base (SE3P)

2007 Mazda RX-8 Base (SE3P)

1995 Mazda MX-3 Base (EC)

2004 Mazda 3 RWD

2021 Chrysler 300C

AST Suspension Lowering Springs (35mm/35mm) - 1997-2004 BMW 5 Series 520i/523i/525i/530i/520D/525TDS Touring (E39) st-suspensions-st-rear-anti-sway-bar 2007 Mazda RX-8 Base (SE3P)AST Lowering Springs for the 1997 2004 BMW 5 Series (E39) 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.