AC Schnitzer (ACS) Valved Quad Exit Cat-Back Exhaust for BMW M3 F80 2014-2018 Saloon/Sedan - 90mm Polished Chrome Tips - Stainless Performance Backbox/Muffler

Transform your BMW M3 F80 with a premium quad exit performance system

Looking for a serious exhaust upgrade for your BMW M3 F80 saloon that delivers real theatre without compromising day-to-day usability? This AC Schnitzer quad exit performance system is engineered in high grade stainless steel with precision welding and beautifully finished tip options. It keeps your factory valve control, adds a richer tone, and brings purposeful styling to the rear of your M3.

Why enthusiasts choose this system

• Quad 90 mm tailpipe finishers for an aggressive OEM-plus look
• Choice of polished chrome or stealthy black ceramic-coated outlets with subtle AC Schnitzer branding
• Uses the original flap control for comfort in closed mode and a more expressive note when open
• Stainless construction for durability and corrosion resistance
• Weight saving versus the stock rear section for improved response feel
• Reduced back pressure and a deeper, more characterful exhaust note

Upgrade paths and options

Want even more volume and flow. The Export configuration adds centre link pipes with high flow sports catalysts to unlock an extra layer of sound and further lower restriction. A carbon fibre rear diffuser is available separately to complete the look with a motorsport-inspired finish.

Fitment

Designed specifically for the BMW M3 F80 saloon. This is a direct performance swap for the rear section with valve integration using the factory electronics.

Real-world results

We have installed and driven this setup on customer cars and our own builds. Feedback is consistently positive about the quality, tone and finish. Cold starts sound purposeful, cruising remains civil with the valves shut, and wide-open throttle brings out that unmistakable straight-six growl.

Perfect for search and spec seekers

If you are searching for BMW M3 F80 exhaust upgrade, quad tip cat-back, valved backbox, performance muffler, stainless exhaust system, M3 saloon quad exit, AC Schnitzer exhaust M3, F80 M3 catback, M3 performance exhaust with chrome tips or black tips, high flow sports cats, centre pipes or link pipes, this is the premium solution that delivers sound, style and quality.

Professional installation

We recommend professional fitting for best alignment and valve operation. Book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and lead times.

What you get

• AC Schnitzer stainless rear section with quad 90 mm tailpipe finishers
• Valve control retained via OEM electronics
• Optional Export centre link pipes with high flow sports catalysts
• Optional carbon fibre rear diffuser available separately

Upgrade your M3 F80 with confidence. Premium materials, precise fitment and a sound profile that matches the performance of your car.