Audi S4/S5 B9 Sport Diff without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-100 Burnt Titanium Trims BMW > 4 Series > F82/83 M4 Coupe/Convertible Very low leak down [4%]

Very low leak down [4%] after controlled test bed running

This BMW 335D performance exhaust is made in 3"/76

A choice of highly polished stainless steel tailpipes are available including 3

By purchasing this deposit

Audi S4/S5 B9 Sport Diff without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-100 Burnt Titanium Trims BMW > 4 Series > F82/83 M4 Coupe/Convertible Very low leak down [4%]Our range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality material will ensure that your Cat Back system