Valved Rear Silencer with GT-80 Polished Trims BMW > 4 Series > F82/83 M4 Coupe/Convertible the M135i F40 exhausts are

the M135i F40 exhausts are TIG-welded from high-quality T304 stainless steel and the mandrel pipework is a full 3” (76

This Audi TTS performance exhaust is made in 3"/76

Sports Cat/De-Cat Front Downpipes - To standard and Cobra Sport Cat/GPF-Back exhaust fitment

4dB) at idle and 87

Valved Rear Silencer with GT-80 Polished Trims BMW > 4 Series > F82/83 M4 Coupe/Convertible the M135i F40 exhausts areOur 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