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Performance M

Dinan Free Flow Valved Axle-Back Exhaust - Rear Silencer/Back Box/Muffler Upgrade, Stainless with Polished Quad Tips - BMW M3 F80 & M4 F82/F83 (F8X S55) 2015-2020 Bolt-On Performance Rear Section

Dinan Free Flow Valved Axle-Back Exhaust - Rear Silencer/Back Box/Muffler Upgrade, Stainless with Polished Quad Tips - BMW M3 F80 & M4 F82/F83 (F8X S55) 2015-2020 Bolt-On Performance Rear Section

£2,686.81
£2,686.81
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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.

Make your F8X sound the way it should

Looking for a premium rear section that delivers sound, quality and everyday usability on your BMW M car? This Dinan valve‑controlled rear silencer for the M3 F80 saloon and M4 F82 coupe / F83 convertible is a direct bolt‑on stainless solution with four mirror‑finish tailpipes and factory‑style valve integration. It unlocks a deeper, richer tone on throttle while staying civil at a cruise, so you get excitement when you want it and refinement when you need it.

We have installed this system in‑house and the results are superb. Customers love the muscular note, the lack of unwanted cabin boom and the top‑tier craftsmanship Dinan is known for.

Why enthusiasts choose this system

  • Stainless construction for long‑term durability and corrosion resistance
  • Valve‑controlled sound with quiet mode for neighbourhood starts and a sporty soundtrack when you press on
  • Engineered for smooth flow and reduced back pressure, optimised on the dyno
  • Comfortable motorway cruising with minimal drone
  • Four larger diameter, laser‑etched polished tailpipes for a factory‑plus look
  • Precise fitment that uses OEM hangers and mounting points, no cutting of factory hangers
  • Designed and tested by Dinan in California with premium materials and weld quality
  • Dinan factory matching new car bumper to bumper warranty support, subject to manufacturer terms

Fitment

  • BMW M3 F80 Saloon, 2015 to 2020, S55 twin‑turbo
  • BMW M4 F82 Coupe, 2015 to 2020, S55 twin‑turbo
  • BMW M4 F83 Convertible, 2015 to 2020, S55 twin‑turbo

What you can expect

  • Sporty, deeper tone under load with refined manners at steady speeds
  • Premium build that looks as good as it sounds
  • Straightforward installation thanks to a direct‑fit design

Professional fitting

Want it fitted right first time? Book installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search terms customers use

BMW M3 F80 rear silencer, F80 back box upgrade, M3 quad tailpipe system, BMW M4 F82 exhaust upgrade UK, F83 cabrio exhaust system, S55 valve controlled exhaust, M3 performance rear section, M4 stainless rear box, M3 sport exhaust UK, M4 quad outlet tailpipes, F8X sound upgrade, BMW M3 M4 bolt‑on rear section, M3 polished tailpipes, M4 polished tips, BMW M3 muffler replacement, BMW M4 backbox swap, M3 exhaust UK supplier, M4 exhaust installer Warwickshire, Dinan M3 rear exhaust, Dinan M4 tailpipes.

Note: If you need to confirm compatibility before purchase, contact us and we will be happy to help.

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