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AC Schnitzer Quad Exit Performance Exhaust Backbox / Axle-Back Muffler, 90mm Black Ceramic Tips, for BMW 6 Series Gran Coupe 640i (F06) Rear Silencer Upgrade, Quad Tailpipes

AC Schnitzer Quad Exit Performance Exhaust Backbox / Axle-Back Muffler, 90mm Black Ceramic Tips, for BMW 6 Series Gran Coupe 640i (F06) Rear Silencer Upgrade, Quad Tailpipes

Regular price £3,483.31
Regular price Sale price £3,483.31
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Quad-exit performance backbox for BMW 6 Series F06 640i Gran Coupe

Transform the rear of your 6 Series F06 four-door coupe with this AC Schnitzer quad-exit rear section. It replaces the standard rear silencer with a premium unit that carries four 90 mm outlets - twin tips each side - finished in a deep black ceramic coating with precision etched AC Schnitzer branding. Expect a richer, more characterful exhaust note and a purposeful, motorsport-inspired look that suits the sleek lines of the Gran Coupe.

We have installed this setup in-house and the fit and finish are outstanding. Our customers love the clean aesthetics, the quality of the black ceramic tailpipes and the refined, performance tone. It is a high-end upgrade from one of Germany’s leading BMW specialists, delivering style and sound in one package.

Key highlights

  • Quad exit conversion for F06 640i - twin outlets left and right
  • 90 mm ceramic-coated black tailpipes with etched AC Schnitzer logo
  • Uses the same rear canister as the dual-outlet version on petrol applications "export" variant
  • Enhanced exhaust character with a sporty, mature tone
  • Eye-catching upgrade that complements the Gran Coupe’s rear profile

Compatibility and bumper requirements

  • SE and Sport models - requires AC Schnitzer rear skirt rear valance
  • M Sport models - requires AC Schnitzer carbon fibre rear diffuser
  • Not compatible with the standard factory skirt or diffuser on any trim
  • Please select the correct engine option at checkout. Petrol models utilise the "export" silencer version as noted

Specification

  • Vehicle fitment - BMW 6 Series F06 Gran Coupe 640i petrol
  • Configuration - rear silencer backbox with four outlets 2 per side
  • Tailpipe size - 90 mm diameter tips
  • Finish - black ceramic coated, AC Schnitzer etched

Why choose this upgrade

  • Premium German tuning brand for BMW applications
  • Aggressive, OEM-plus appearance with quad tips
  • Beautiful black ceramic tails - easier to keep looking fresh
  • Direct rear section replacement for a cleaner, deeper sound

Fitting and support

Professional installation recommended. For fitting, speak to MJ Modifications in Warwickshire - request a quote at info@mjmodifications.co.uk.

Search-friendly terms

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