Milltek Sport 3 inch (76mm) Catted Downpipes/Front Pipes, 100 Cell (100 CPSI) High-Flow Sports Cats for Audi C7 RS6 RS7 S6 S7 4.0 TFSI Biturbo, Stage 2, Fits OE/Stock Cat-Back, Cerakote Coated, UK Made - SSXAU635

SSXAU635 3 inch Front Pipes with 100 CPSI Sports Catalysts for Audi C7 4.0 TFSI

Unlock serious performance on the C7 platform with this UK-built Milltek front section, featuring 3 inch tubing and ultra-low cell count sports catalytic converters. Tailored for the twin turbo 4.0 TFSI V8 in RS6, RS7, S6 and S7 models, this hardware is the ideal Stage 2 foundation when you want faster turbo response, harder mid-range punch and a richer V8 soundtrack while retaining the factory rear system. Finished in a durable satin black Cerakote ceramic coating for a purposeful look and long-term protection.

Why this upgrade works

• 3 inch bore increases gas velocity and reduces pressure drop for quicker spool and stronger torque
• 100 CPSI high-flow sports cats minimise restriction compared to stock for Stage 2 calibrations
• Bolts to the original rear section for an easy, clean install with OEM-style fit
• Cerakote ceramic finish helps with heat management and a stealth appearance
• Designed and manufactured in Britain by Milltek, a leader in performance exhaust engineering

We have installed this setup at MJ Modifications and customer feedback has been outstanding. Drivers report sharper throttle response, improved drivability and a deeper, more aggressive tone without drone when paired with an appropriate tune and the standard rear exhaust.

Key details

• Pipe diameter: 3.00 inch, 76.20 mm
• Configuration: larger-bore front pipes with 100 CPSI sports catalytic converters
• Finish: satin black Cerakote coating on the front pipes
• Tuning note: intended for Stage 2 ECU calibration
• Fitment note: mates to the factory rear section only
• Part number: SSXAU635

What you receive

• 1 x left-hand 3 inch primary front pipe, Cerakote satin black
• 1 x right-hand 3 inch primary front pipe, Cerakote satin black
• 1 x left-hand underfloor 100 CPSI high-flow sports catalyst
• 1 x right-hand underfloor 100 CPSI high-flow sports catalyst

Compatible vehicles

• Audi RS6 C7 4.0 TFSI biturbo quattro including Performance models, 2013 onward
• Audi RS7 Sportback 4.0 V8 TFSI biturbo including Performance models, 2013 onward
• Audi S6 C7 4.0 TFSI quattro, 2012 onward
• Audi S7 Sportback 4.0 TFSI quattro S tronic, 2012 onward

Fitting and support

Professional installation recommended. MJ Modifications offers supply and fitting in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check

We verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm compatibility.

Search-friendly terms

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