AC Schnitzer Twin Exit Sports Exhaust Rear Silencer/Muffler (Axle-Back Back Box) for BMW 6 Series F12/F13 640d Diesel Coupe/Convertible - Stainless Steel Twin Chrome Tips Performance Upgrade

Premium stainless rear section with twin chrome finishers for BMW 6‑Series diesel

Transform the character of your 6‑Series diesel with a German‑engineered performance rear silencer that delivers a richer, deeper tone, improved flow and a weight saving over the factory system. This twin exit back box features beautifully finished chrome tailpipe trims for an OEM plus look that suits both coupé and convertible models.

Why enthusiasts choose this upgrade

• Sportier sound and enhanced exhaust note for everyday driving and spirited use
• Stainless steel construction for durability and long‑lasting finish
• Twin polished chrome tailpipe finishers for a premium, motorsport‑inspired aesthetic
• Improved breathing for your diesel powertrain, with a useful reduction in weight
• Engineered by a renowned German tuning house for quality, fit and finish
• Non‑homologated version supplied for a fuller, more engaging soundtrack

Fitment and compatibility

Designed for BMW 6‑Series diesel models in the F12 and F13 generation, including 640d. Please select the correct engine option when ordering.

• SE and Sport variants require the matching AC Schnitzer rear skirt
• M Sport variants require the matching AC Schnitzer carbon fibre rear diffuser
• Not compatible with the standard factory rear valance on either variant

What it feels like on the road

We have fitted this rear silencer for customers and in our own builds. Feedback is consistently positive, highlighting a deeper, more purposeful tone without unwanted drone, a high‑quality finish and a subtle visual upgrade that looks right at home on the 6‑Series.

Ideal search terms and use cases

BMW 640d exhaust upgrade, F12 F13 diesel rear silencer, performance back box, stainless steel muffler, twin chrome tips, tailpipe upgrade, axle‑back rear section, premium German tuning, 6‑Series coupé and convertible exhaust sound improvement.

Professional installation

For a perfect fit and alignment of the twin tailpipes, we recommend professional installation. MJ Modifications in Warwickshire offer full supply and fit services. Request a fitting quote at info@mjmodifications.co.uk.

Note: Non‑homologated rear section supplied for a sportier sound. Compatibility depends on the required AC Schnitzer rear styling components as listed above.