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AST lowering springs for 2003–2009 BMW Z4 lower ride height about 30mm front and rear while keeping much of the OEM comfort. Offered as direct replacements, they reduce the center of gravity to improve stance and handling without introducing a harsh ride. Cold‑coiled on Wafios equipment and using a progressive design, these vehicle‑specific springs balance lowered looks and stability and are backed by a lifetime warranty against breakage.
AST 2003-04/2009 BMW Z4 Lowering Springs - 30mm/30mm
