Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-90 Cerakote Black Trims BMW > 5 Series > M5 4.4l Twin Turbo Hybrid G90 & G99 (NAS/ROW Spec Vehicles) > 2025 and Later

Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-90 Cerakote Black Trims BMW > 5 Series > M5 4.4l Twin Turbo Hybrid G90 & G99 (NAS/ROW Spec Vehicles) > 2025 and LaterOur 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

similar to the one which makes the OEM connection

the R8's exhaust has an excellent tone

with precision jig manufacturing to ensure a perfect fit

which in turn opens the door to gains in both power and torque

70ml Sump Sealant

integrated plug for harness connection

A plug is integrated into the controller housing for mating to the redesigned wiring harness’s positive-lock connector

Reduces Carbon DepositsModern vehicles fitted with Exhaust Gas Recirculation (EGR) devices for emissions control promote heavy carbon build up inside the air intake

Save 30% on the matching rear diffuser panel when purchased together (see part code: RP01)

offering drivers fun backroad blasts combined with with a practical and reliable daily driver

Milltek’s AVC enables the driver to choose when the valves open and close to tune the sound and volume of the exhaust

and offer over a 10% increase in overall diameter over the stock tailpipes