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The AST Lowering Springs are engineered to enhance your BMW 4 xDRIVE 420i/428i/430i xDRIVE (03/2014-07/2021) by lowering its center of gravity
Approximately 10 mm less lowering for vehicles with Adaptive M-Sport suspension
No professional assistance is required
81" and larger 2" inlet kits
Turbo options ranging from 5862 to 6870
Supersprint BMW G01 X3 & G02 X4 Stainless Steel Centre Pipes Kit M440i (G22/G23) ENGINE & PERFORMANCE The AST Lowering Springs areThe Supersprint Centre Pipes Kit Right Left is a precision, direct fit stainless steel upgrade engineered for the BMW G01 X3 & G02 X4. It replaces the restrictive factory component to free up exhaust flow, sharpen throttle response and give your BMW a deeper, more purposeful note. Supersprint has been handcrafting performance exhausts in Mantova, Italy since 1955. Every system is designed and validated on the dyno not by assumption using thin wall
