Milltek Sport Rear Section / Axle-Back GPF-Back Sports Exhaust for BMW M4 G82 & M4 Competition (S58, 2020+) - GT-115 Brushed Titanium Tips - OPF/GPF Compatible, T304L Stainless, No Drone | Back Box / Rear Muffler Upgrade, UK-Made

Rear Section Sports System with GT-115 Brushed Titanium Tips for BMW M4 G82 and M4 Competition (S58) — OPF/GPF Compatible

Transform the sound and presence of your G82-chassis BMW M4 with this UK-engineered rear section from Milltek, complete with GT-115 brushed titanium outlet trims. Purpose-built for OPF and GPF equipped cars, it delivers a deeper, richer soundtrack with crisp overtones and zero cabin boom. If you want an OEM-plus upgrade that keeps the factory particulate filters in place while unlocking a more engaging, motorsport-inspired note and a premium look, this is the one to choose.

Crafted from austenitic T304L stainless steel, the pipework and silencers resist corrosion and discolouration for long-term reliability. Precision mandrel bending keeps the radius consistent to optimise gas velocity, while the subtly increased bore over stock helps the S58 twin-turbo straight six breathe more freely without sacrificing drivability. Every system is designed, developed and hand-finished in Britain, with meticulous acoustic tuning to ensure a refined tone on the motorway and a purposeful growl when you press on.

Highlights

• Rear section sports setup for GPF/OPF equipped cars
• GT-115 brushed titanium tailpipe trims for a lightweight, premium motorsport aesthetic
• T304L non-magnetic stainless throughout for durability and corrosion resistance
• Mandrel-bent tubing for smooth, efficient flow
• Carefully balanced sound profile with no intrusive resonance inside the cabin
• UK designed, UK developed and hand-finished for a precise fit and high-end finish

Compatibility

BMW M4 G82 including M4 Competition, S58 3.0 twin‑turbo engine, model year 2020 onwards. OPF/GPF models only.

Why enthusiasts choose this upgrade

Our workshop has fitted many Milltek systems and feedback is consistently positive. Customers love the deeper tone, the refined motorway manners, and the quality of the brushed titanium GT-115 outlets. It looks right, sounds right and complements the character of the S58 without unwanted harshness.

Professional installation

For fitting, we recommend MJ Modifications in Warwickshire. Request an installation quote: info@mjmodifications.co.uk.

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