Dinan Free Flow Valved Axle-Back Stainless Steel Exhaust with Black Quad Tips for BMW F80 M3, F82 M4, F83 M4 (S55)

Valved Axle-Back Rear Section with Satin Black Quad Outlets for BMW F80 M3, F82 M4, F83 M4

Give your F8X the soundtrack it deserves with Dinan’s switchable rear silencer. This premium axle-back system transforms the S55 twin turbo tone with a deeper, richer note under load while remaining civilised on the motorway. It bolts straight on using the original hangers and valve actuators, delivering an OEM-plus fit and finish with a purposeful look thanks to the stealthy black quad tailpipes.

Engineered for flow and reduced back pressure, the valve control works seamlessly with your car’s drive modes. Keep things calm in Comfort, then unleash a more assertive, motorsport-inspired bark in Sport. No coding needed. No fuss. Just refined sound control and quality materials throughout.

Why enthusiasts choose this rear silencer

• High-grade stainless construction for long-term durability and corrosion resistance
• Active flap design integrates with factory electronics for quiet cruising and aggressive tone on demand
• Smooth, drone-minimised acoustics at steady speeds with a fuller, deeper character when you want it
• Flow-optimised internal design helps the S55 breathe for sharper throttle response
• Direct bolt-on fitment using OEM mounts and connectors
• Large laser-etched black quad outlets for a subtle, performance look
• Designed, tested and supported by Dinan with warranty backing

Real-world results

We have installed this system on customer cars and our own builds. Feedback has been consistently positive on the sound quality, lack of intrusive resonance, tidy fitment and exceptional finish. It is the ideal upgrade if you want an everyday-friendly setup that comes alive when you press on.

Vehicle compatibility

• BMW M3 F80 Saloon 3.0 S55
• BMW M4 F82 Coupe 3.0 S55
• BMW M4 F83 Convertible 3.0 S55

Installation and support

Professional fitting recommended. Book your installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk

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