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AST lowering springs for 2016–2019 Audi S4 B9 drop the car’s center of gravity while maintaining much of OEM comfort. Cold‑coiled on Wafios machines with a progressive design, these vehicle-specific springs balance a lowered stance and daily usability. Backed by a lifetime warranty against breakage, they’re intended as a direct replacement to improve handling and stance without sacrificing ride quality.
AST 16-19 Audi S4 3.0TFSi B9 Lowering Springs - 25-25mm
