AC Schnitzer Valved Sports Exhaust Rear Silencer/Back Box (Axle-Back) for BMW 8 Series G16 M850i xDrive Gran Coupe - Quad Exit 102mm Carbon Fibre Tailpipes, Stainless Steel, OPF/PPF Compatible Performance Muffler

AC Schnitzer Rear Silencer - BMW G16 M850i xDrive Gran Coupé - Quad 102 mm Carbon Tip System

Give your 8 Series four-door the soundtrack and presence it deserves. This AC Schnitzer quad exit rear box is a precision engineered stainless steel upgrade with 102 mm carbon fibre finished tips that delivers a richer tone, a cleaner look and a lighter rear end. It retains the factory flap control for everyday refinement and instant drama when you want it. Built for the G16 M850i xDrive Gran Coupé, it integrates like OEM and looks like a true performance part should.

Why owners choose it

• Quad 102 mm outlets with carbon fibre finish for a purposeful motorsport look
• Valve controlled design uses the original actuator for seamless driving mode sound control
• Premium stainless construction for longevity and perfect fit
• Deeper, more characterful note without drone when cruising
• Weight saving over stock and a stronger, wider rear stance
• Engineered specifically for the G16 M850i xDrive Gran Coupé

Versions available

• M850i Standard - Homologated and compatible with OPF and WLTP.
• M850i Export - Not homologated, OPF compatible. Includes soundpipe for extra volume and theatre.

Compatibility

• BMW 8 Series G16 Gran Coupé
  • M850i xDrive Gran Coupé
  • M850ix

Not suitable for: 840i or 840d.

Part numbers

• 1812316514 - M850i Standard
• 1812316524 - M850i Export

Fitting and installation

Supplied with instructions in German and English. Recommended installation time is 14 AW, approximately 1 hour 10 minutes, plus painting of the tailpipe surrounds if required.

Want it installed professionally with care and attention to detail? Book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Warranty

All AC Schnitzer parts sold in the UK include a two year manufacturer warranty, or until the end of the three year BMW warranty period, whichever is longer.

Proven on our own builds

We have fitted and used this system on G16 M850i cars and customer feedback has been consistently positive. Owners love the carbon tip finish, the refined yet muscular sound and the OEM level fitment. If you are after a premium quad exit upgrade that works with the particulate filter and keeps valve functionality, this is the one to choose.

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