Milltek Sport SSXAU588 Secondary Cat Delete/Decat Centre Section for Audi RS3 8V (2015-2018) & TT RS 8S Mk3 2.5 TFSI Non-OPF/Non-GPF | 3" 76.2mm Midpipe/Center Pipe | Fits OEM or Milltek Cat-Back

Milltek Centre Section Bypass for Audi RS3 8V and TT RS 8S

Turn up the iconic five‑cylinder character and free up the mid‑section with this Milltek centre link pipe. Designed for non‑PPF 2.5 turbo models, it replaces the secondary converters with a straight‑through section to reduce mid‑pipe restriction and deliver a richer, more purposeful soundtrack. It mates to the factory back box or a Milltek rear system for an easy, bolt‑on upgrade. Part number: SSXAU588.

What you will love

• A throatier, motorsport‑inspired tone with extra volume and crisp overrun character.
• Large bore 76.20 mm 3.00 inch tubing for freer flow through the centre section.
• Direct fit to OEM rear silencer and Milltek cat‑back assemblies for straightforward installation.
• UK engineered for precise fit and consistent quality you can trust.

We have fitted this centre section for RS3 and TT RS customers and it delivers exactly what enthusiasts want from a midpipe upgrade. Feedback on sound, fitment and finish has been excellent, making it a favourite for drivers chasing that signature Audi five‑pot warble without changing the entire system.

Vehicle applications

• Audi RS3 Sportback 8V MQB pre‑facelift 2015 to 2017
• Audi RS3 Saloon 400 PS 8V MQB non‑OPF 2017 to 2018
• Audi RS3 Sportback 400 PS 8V MQB facelift non‑OPF 2017 to 2018
• Audi TT Mk3 TT RS 8S 2.5 TFSI quattro 2016 onwards

Compatible with the original back box and Milltek cat‑back systems. Not required when running a complete turbo‑back. Some cars are not equipped with secondary converters, so please check visually before ordering. For non‑OPF models only.

Key details

• Bore size: 76.20 mm 3.00 inch
• Milltek part number: SSXAU588

Fitment check before dispatch

We verify compatibility prior to shipping. Add your UK registration or last 7 digits of your VIN at checkout.

Professional fitting

Want it installed perfectly first time? Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Important information

• For off‑road and track use where regulations permit.
• Please confirm your vehicle has secondary converters before purchase.

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