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AST lowering springs for 2018–present BMW Z4 sDrive reduce ride height about 30mm front and rear while maintaining OEM‑like comfort. Offered as direct OEM replacements, they lower the center of gravity to improve stance and handling without introducing a harsh ride. Cold‑coiled on Wafios machines with progressive rates, these vehicle‑specific springs balance visual drop and driving stability and include a lifetime warranty against breakage.
AST 11/2018- BMW Z4 sDRIVE Lowering Springs - 30mm/30mm
