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- BMW F20/21 M135i (2011-2016)
Fits a wide range of automatic BMW models
helping to maintain correct suspension geometry and deliver sharper
this Height Adjustable Spring kit allows you to infinitely fine-tune heights front and rear until you reach your ideal stance
uniform finish for those who prefer painted components over visible weave
AST BMW F90 M5 Lowering Springs Select Vehicle:non-Competition - BMW F20/21 M135i (2011-2016)Give your BMW F90 M5 the extra stance it needs with AST lowering springs. AST Lowering Springs 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
