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Please note that these springs are not suitable for four-wheel-drive (4WD) vehicles and that the effective lowering height may vary if the vehicle is already equipped with standard lowering components
giving you a more composed and confident driving experience
contributing to improved driving dynamics
the AST springs feature a progressive design that optimizes handling and stability without compromising daily driving comfort
(2) 10AN ORB x 10AN male flare fittings
Supersprint BMW E89 Z4 Stainless Steel Downpipe Kit(Replaces Catalytic Converter) Product Type_Exhaust Valve Please note that these springsThe Supersprint Downpipe Kit(Replaces Catalytic Converter) is a precision, direct fit stainless steel upgrade engineered for the BMW E89 Z4. 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
