BMW F80 M3 F82 M4 Varex Cat Back System Stainless steel exhaust flanges The Smartbox provides control via

The Smartbox provides control via your smartphone to access preset fully customizable valve positions

an X logo brace for added rigidity

5 /Audi 8V S3 Hatch

Patented Varex Valved mufflers

all using one of the two supplied key fobs

BMW F80 M3 F82 M4 Varex Cat Back System Stainless steel exhaust flanges The Smartbox provides control viaLet your twin turbo S55 sing with our VAREX Valve equipped exhaust system to suit the BMW F80 M3 and F82 M4 Engineered with 2. 5 304 stainless steel with quad 4 tip outlets, this system projects a symphony like no other. Not only will your M sound the best, it will look the part as well. Designed for the spirited driver seeking a performance exhaust solution with user adjustable sound control, our system for the F80 M3 completely transforms your