AST Lowering Springs - BMW F97 X3M / F98 X4M F22 230IX BMC filters are made of

BMC filters are made of a multi-layered cotton gauze soaked with low viscosity oil covered with an epoxy coated alloy mesh to ensure protection from petrol fumes and oxidization due to air humidity

If you’re looking to elevate your BMW’s exterior with a touch of motorsport heritage

Sold as a complete set

more free-flowing performance filter

Secure cup holder-mounted phone holder design

AST Lowering Springs - BMW F97 X3M / F98 X4M F22 230IX BMC filters are made ofElevate your BMW F97 X3M or F98 X4M to new heights of precision and style with the AST Lowering Spring Seta triumph of engineering crafted for those who demand more from every curve. Forged from premium high tensile chromium silicone wire, hand selected by ASTs expert engineers for its unmatched quality and consistency, these springs redefine performance. Cold wound, heat treated, and shot peened, each spring undergoes a meticulous process to enhance