2018 Audi S4 Lowering Kits
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H&R® - 0.8" x 0.8" Sport Front and Rear Lowering Coil Springs$331.69 + Free Shipping with iD FastTrack -
H&R® - 0.75"-1.6" x 0.75"-1.6" VTF™ Front and Rear VTF Adjustable Lowering Spring Kit$1,045.27 + Free Shipping with iD FastTrack