Milltek Sport Lower Downpipe - 2008-2012 Audi S5 4.2 V8 Coupe B8

These Milltek Sport parts fit the 2008-2012 Audi S5 coupe (B8) with the 4.2 liter V8. This large-bore lower downpipe section lets the B8 S5 V8 exhale more freely while keeping the factory catalytic converters. A Milltek hot-side part replaces the restrictive factory section with larger, smoother T304L tubing, so exhaust gas leaves the engine with less resistance. Every Audi S5 4.2 B8 system is made from T304L stainless steel with mandrel-bent tubing, so the pipe keeps its full size through each bend and resists corrosion for years. They bolt in place of the factory parts with no cutting or welding.

How to Choose

This page has one version: the Large-Bore Lower Downpipe, Keeps Factory Cats, which keeps the factory catalytic converters in place.

Pair them with the Milltek cat-back for the Audi S5 4.2 B8 for a complete Milltek exhaust.

Features

• 60 mm (2.36 in) T304L stainless steel pipework
• Mandrel-bent and made to bolt to the factory mounting points

What's Included

• Left and right post-catalyst downpipes (lower)

Specifications

Fitment Notes

• Fits the 2008-2012 US-market S5 4.2 coupe. Milltek lists it for manual cars; please call us to confirm fitment on Tiptronic cars.
• It keeps the factory catalytic converters, so the system stays catted.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.