Milltek Sport Cat-Back Exhaust OPF/GPF Bypass, Quad GT-100 100mm Black Tips for BMW 3 Series G20 M340i xDrive Saloon 2019-2021 (OPF/GPF Models) - Requires OE Cut - SSXBM1163

Milltek Sport Cat-Back Exhaust OPF/GPF Bypass, Quad GT-100 100mm Black Tips for BMW 3 Series G20 M340i xDrive Saloon 2019-2021 (OPF/GPF Models) - Requires OE Cut - SSXBM1163

£2,212.36
£2,212.36
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Milltek Cat-back OPF/GPF Bypass with Quad GT-100 Black Trims for BMW G20 M340i xDrive Saloon 2019 to 2021 - Part No. SSXBM1163

Transform your BMW G20 M340i xDrive with the Milltek Sport cat-back exhaust OPF/GPF bypass. This system delivers a deeper, sportier soundtrack and freer flowing performance while retaining daily usability and comfort. If you are searching for a BMW M340i G20 cat back exhaust, M340i OPF bypass, GPF bypass exhaust, quad black tips M340i or GT-100 tips for the M340i, this Milltek SSXBM1163 is the upgrade enthusiasts choose in the UK.

Why choose this Milltek cat-back for your M340i

  • Hand-finished in the UK by time-served craftsmen using aerospace grade type 304 non-magnetic stainless steel for exceptional durability and corrosion resistance.
  • Mandrel-bent pipework with carefully increased bore diameters over stock for optimised gas flow without sacrificing mid-range torque.
  • Comprehensive acoustic development for a crisp, sporty tone without unwanted NVH, drone or cabin resonance.
  • OPF/GPF bypass design tailored to OPF-equipped G20 M340i models for a more engaging exhaust note.
  • Aggressive quad GT-100 100 mm black trims that perfectly suit the M340i’s rear bumper and premium look.
  • Precision fit and finish from one of the most respected UK performance exhaust manufacturers.

Fitment and key details

  • Vehicle - BMW 3 Series G20 M340i xDrive Saloon OPF/GPF models only.
  • Years - 2019 to 2021.
  • Configuration - Cat-back system with OPF/GPF bypass and quad GT-100 black tips.
  • Installation note - Requires the OE system to be cut during fitting.
  • Part number - SSXBM1163.

Crafted for sound, flow and longevity

Every Milltek system is designed, developed and hand-finished in the UK. The use of type 304 stainless steel throughout the pipework, silencers and associated hardware ensures long-term reliability and resistance to discolouration. Mandrel bends maintain a constant radius to keep gas velocity high, while the enlarged bore is engineered for balanced performance. The result is an exhaust that sounds fantastic and feels refined on the motorway, with no intrusive drone.

Real-world experience

We have supplied and fitted this system to customer M340i G20 xDrive cars and the feedback has been consistently positive. Owners praise the quality, the perfect tip alignment and the deeper, more purposeful sound that complements the B58 engine without being overbearing.

Professional fitting available

For a seamless installation, we recommend professional fitting. Nforcd is based in Warwickshire and can supply and install this Milltek M340i cat-back. Request a fitting quote at Sales@nforcd.com.

Popular search terms

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Important - This OPF/GPF bypass cat-back requires cutting the original exhaust during installation. Check and comply with all local regulations regarding emissions-related modifications.