Milltek Sport Cat-Back Exhaust - 2017-2020 Audi RS 3 Sedan 8V

This Milltek Sport cat-back exhaust fits the 2017-2020 Audi RS 3 sedan (8V), the first RS 3 sold in the US, with the 2.5 liter turbocharged five-cylinder. It replaces the factory exhaust from behind the downpipe to the two oval tailpipes, uses the factory hangers, and is made in England from T304L stainless steel. Every version finishes in a pair of oval Jet tips that fill the factory bumper openings.

There are two pipe sizes. The 80 mm (3.15 in) systems use larger pipework and keep the factory exhaust valves with valved outlet pipes. Milltek estimates 2 to 2.5 hours to fit them. The 76 mm (3.0 in) systems use Milltek's HollowTek rear silencer, cost less, and take about 1 to 1.5 hours.

You can also add a Milltek downpipe in the same order. Each one fits the factory exhaust or any Milltek cat-back on this page.

How to Choose

Pick a System first. In the 80 mm range, Race is the loudest with a race rear silencer, Non-Resonated drops the center silencer, and Resonated keeps one for a calmer cruise. In the 76 mm range, Non-Resonated swaps the front silencer for a straight pipe, and Resonated keeps a Milltek front silencer. Then pick an Exhaust Tip Finish: polished, Cerakote black, brushed titanium or burnt titanium.

Last, choose Add Downpipe. No Downpipe keeps the factory part. The catted downpipe uses a 200-cell high-flow catalytic converter. The catless downpipes have no catalytic converter, and the V2 is Milltek's newer design. All downpipes are race products for off-road and track use and need an ECU remap. Milltek notes that the turbo wastegate design means a catless downpipe can let more metallic rattle be heard than the factory downpipe. You can also buy them on their own: see the Milltek downpipes for the RS 3 8V sedan.

Features

• T304L stainless steel in 80 mm or 76 mm pipework
• Race, non-resonated or resonated sound levels
• Valved outlet pipes on 80 mm systems
• Oval Jet tips in four finishes
• Optional catted or catless downpipe

What's Included

• 80 mm systems: trim connecting pipe, center silencer replacement pipe (Race and Non-Resonated) or center silencer (Resonated), rear silencer or race rear silencer, left and right valved outlet pipes, and two tips
• 76 mm systems: front silencer delete pipe (Non-Resonated) or front silencer (Resonated), trim connecting pipe, HollowTek rear silencer, and two tips
• Catted downpipe: turbo elbow and 200-cell high-flow cat assembly
• Catless downpipes: large-bore downpipe with no catalytic converter

Specifications

Fitment Notes

• Fits the 2017-2020 Audi RS 3 sedan (8V) sold in the US. US cars do not have a particulate filter.
• Not for the 2022 and later RS 3 (8Y), the S3 or the A3.
• Downpipes need an ECU remap, and the catless versions need a Stage 2 remap.
• Professional installation is recommended.

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