AC Schnitzer Twin Exit Performance Exhaust Rear Silencer / Back Box (Axle-Back) for BMW 6 Series F12/F13 640i N55 Coupe & Convertible – Stainless Steel Muffler with Twin Polished Chrome Tailpipes

AC Schnitzer performance rear box for BMW 6 Series F12 F13 640i

Unlock the soundtrack your 6 Series deserves with this AC Schnitzer stainless steel rear silencer. Precision engineered in Germany with twin mirror polished chrome tailpipe finishers, it delivers a richer, more purposeful tone, cleaner exhaust flow and a noticeable reduction in weight compared to the factory back box. The non-homologated variant prioritises a deeper, sportier character for maximum driving enjoyment.

Why choose this upgrade

• Deeper, more engaging exhaust note that complements the 640i straight six
• Improved gas flow for sharper response and a freer revving feel
• Lighter than OE for a subtle performance and handling benefit
• High grade stainless construction with premium chrome tips for a bespoke look
• Designed by BMW specialists AC Schnitzer for a perfect fit and finish

Fitment and compatibility

• Chassis: BMW 6 Series F12 convertible and F13 coupé
• Engine: 640i petrol
• SE and Sport models: requires AC Schnitzer rear skirt
• M Sport models: requires AC Schnitzer carbon fibre rear diffuser
• Not compatible with the standard factory lower valance on either trim
• Please select the correct engine option before adding to basket

What enthusiasts love

We have installed this system for customers and in our own builds. Feedback is consistently positive: a deeper tone when you want it, tasteful looks that enhance the rear end, and the quality you expect from a top German tuning house. It is the ideal axle-back upgrade for drivers who want an authentic performance sound and premium styling.

Professional fitting available

We recommend professional installation. MJ Modifications in Warwickshire offers full fitting and setup for this AC Schnitzer rear silencer and the required diffuser or skirt. Request a quote: info@mjmodifications.co.uk.

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