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Each billet aluminum end tank is produced with CNC machining to exacting tolerances
available for both left and right sides
- Direct replacement for standard start/stop button
the AST Lowering Springs offer a balance between sportiness and everyday usability
Extensive application range covering over 2500 vehicle models from 1966 to present
AST Lowering Springs For BMW Z4 sDRIVE sDRIVE 20i/sDRIVE 30i 11/2018-, Front 30 , Rear 30 Brand_STJARNAGLOSS Each billet aluminum end tankThe AST Lowering Springs for BMW Z4 sDRIVE 20i and sDRIVE 30i (from 11 2018 onwards) represent a high quality solution designed to enhance your vehicle's handling and aesthetic appeal by lowering its center of gravity. Manufactured with precision using the best Wafios coiling machines, these cold coiled springs ensure consistent performance and durability. Their progressive design allows for a reduction of 30 mm at both the front and rear, delivering