2018 Audi S4 Rear Diffusers
Select Your Submodel
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Save 32%Duraflex® - Circuit Style Fiberglass Rear Diffuser (Unpainted)$168.00$248.00Save $80.00 (32%) -
Save 28%Carbon Creations® - Circuit Style Carbon Fiber Rear Diffuser$464.00$646.00Save $182.00 (28%) -
Spec-D® - 23" Glossy Black Rear Diffuser$18.16 + Save an extra $1.40 with iD FastTrack