Audi S3 8Y quattro Sportback 5dr 2020-on GPF/OPF-Back Cat-Back Performance Exhaust - Cobra Sport 3in (76mm) Stainless - Valved or Non-Valved, Resonated/Non-Resonated - Centre & Rear Section EA888 2.0 TSI/TFSI

Audi S3 8Y Sportback exhaust upgrade for serious sound and flow

Unlock the soundtrack your S3 deserves with this Cobra Sport stainless rear system for the 5 door hatch. Designed for the latest quattro hot hatch with the EA888 2.0 TSI engine, this post-GPF cat-back style setup replaces the centre and rear sections to deliver a deeper, crisper tone and a cleaner look while keeping road legality intact.

• Large bore 3 inch 76.2 mm stainless pipework for improved gas flow and response
• Fits from the gasoline particulate filter rearwards - replaces centre and back box sections
• Available with valve control retained or as a fixed-open non-valved option
• No ECU calibration required - bolt-on installation
• MOT friendly as the original catalyst and GPF remain in place
• Expert TIG-welded stainless construction with a quality finish
• All fixings, clamps and gaskets included
• Backed by a manufacturer guarantee for peace of mind

Real-world sound data

Valved, non-resonated configuration on the S3 8Y Sportback delivered:

• Dynamic mode idle: 63.6 dB, an increase of 5.9 dB over stock
• Static 3,500 rpm test: 84 dB, an increase of 5 dB

Valve options explained

• Valved - Keeps the factory flap control so Drive Select continues to switch between quieter and louder tones.
• Non-valved - Deletes the flaps for a consistent, sportier note in every mode. This does not affect vehicle health or drivability.

Why choose this S3 8Y rear section upgrade

This OPF-back system transforms the character of the 2020-on S3 8Y 5dr Sportback with a richer exhaust note, sharper presence and excellent build quality. The large diameter, free-flowing layout supports future tuning while staying daily-drive friendly. Our team has installed these systems and customer feedback has been outstanding for tone, fit and finish.

Fitment and installation

Direct replacement for the Audi S3 8Y Sportback centre and rear sections. If you want professional fitting, book in with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Perfect for searchers looking for

Audi S3 8Y catback, OPF-back exhaust, post-GPF rear section, non resonated S3 system, valve-controlled exhaust for S3, stainless steel exhaust upgrade, 5 door Sportback hatch exhaust, quattro hot hatch exhaust, 2.0 TSI TFSI EA888 exhaust sound, UK MOT compliant exhaust, bolt-on S3 exhaust 2020-on.

Specs at a glance

• Vehicle: Audi S3 8Y Sportback 5dr
• Engine: 2.0 TSI EA888
• Piping: 3 inch 76.2 mm stainless
• Configuration: GPF-back replacement for centre and rear sections

Media