Milltek Sport Cat-Back Exhaust - 2018-2022 Audi TT RS Mk3

This Milltek Sport cat-back exhaust fits the 2018-2022 Audi TT RS coupe (Mk3, 8S) with the 2.5 liter TFSI turbo five. For the Mk3 TT RS, Milltek offers 80 mm and 76 mm cat-backs, each non-resonated or resonated, with oval Jet tips in up to four finishes, plus optional downpipes that fit the factory or the Milltek cat-back. Each system is built for this exact chassis, so it follows the factory routing, hangs from the stock mounts and keeps the ground clearance of the original exhaust. Compared with the factory steel parts it is lighter, flows more freely and gives the engine a clearer, stronger voice under load, without the harsh highway drone of a cheap straight pipe. The Audi TT RS Mk3 parts are T304L stainless steel with mandrel-bent tubing, which keeps the pipe at full size through each bend and resists corrosion for years. It bolts on with the factory hangers and clamps, with no cutting or welding needed. It swaps the factory exhaust from the catalytic converters back, using 76.2 mm (3 in) T304L stainless steel pipework, and bolts to the factory mounting points.

How to Choose

Start with the System. 76mm Non-Resonated (Louder) uses 76 mm pipework, a front silencer delete pipe and the Hollowtek valved rear silencer. 80mm Non-Resonated (Loudest) uses 80 mm pipework and the larger rear silencer with no front silencer, the loudest option. 76mm Resonated (Quieter) uses 76 mm pipework with a front silencer and the Hollowtek valved rear silencer, the calmest option. 80mm Resonated uses 80 mm pipework and the larger rear silencer with a front silencer.

Then pick an Exhaust Tip Finish: Polished Jet Oval (bright polished stainless), Cerakote Black Jet Oval (a black Cerakote ceramic coating), Brushed Titanium Jet Oval (a brushed titanium finish), Burnt Titanium Jet Oval (a heat-blued burnt titanium finish). The finish changes the look only, not the sound.

The Add Downpipe option bundles a Milltek downpipe with the cat-back. No Downpipe keeps your factory downpipe. Catless Downpipe adds a catless downpipe (off-road and track use only). Catted 200-Cell Downpipe adds a large-bore downpipe with a high-flow 200-cell catalyst (race product, ECU remap needed). You can also buy them on their own from the downpipes for the Audi TT RS Mk3.

Features

• 76.2 mm (3 in) T304L stainless steel pipework
• Mandrel-bent and made to bolt to the factory mounting points
• 4 tip finishes
• Catted and catless options explained in How to Choose

What's Included

• Milltek pipework and rear silencer for the system you choose
• Left and right oval Jet tips (170 x 107 mm) in the finish you choose

Specifications

Fitment Notes

• Fits the 2018-2022 US-market Audi TT RS coupe (Mk3). Not for the TTS or the TT 2.0T.
• The 76 mm systems use a Hollowtek valved rear silencer (valved, with no motors) and either a front silencer (Resonated) or a front silencer delete pipe (Non-Resonated). The 80 mm systems use a larger 80 mm rear silencer.
• Both downpipe options fit the factory or the Milltek cat-back. They are race products that need an ECU remap, and the catless downpipe is for off-road or track use only.
• Catless parts remove the catalytic converter. They are sold for off-road and competition use only and are not legal on public roads in the US.

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