Milltek OPF/GPF Delete/Bypass Axle-Back Rear Silencer/Backbox, Quad Exit 100mm GT100 Polished Tips for BMW 3 Series G20 M340i xDrive Saloon 2019-2021 – T304 Stainless Sport Exhaust Upgrade | OPF/GPF Cars | Requires Cut | SSXBM1162

Milltek Performance Rear System with OPF delete and quad 100 mm polished GT100 tailpipes for BMW G20 M340i xDrive Saloon 2019 to 2021 — Part No: SSXBM1162

Unlock a richer soundtrack and a more purposeful look for your M340i with this UK engineered rear section from Milltek. Crafted in premium T304 stainless steel and finished with four 100 mm polished GT100 outlets, this filter back upgrade replaces the sections after the OPF GPF for a deeper, crisper tone while keeping motorway refinement in check. If you want an M340i exhaust enhancement that looks factory plus and sounds genuinely sporty, this is the one our customers keep choosing.

Why enthusiasts choose it

• OPF GPF delete configuration designed specifically for the G20 M340i xDrive Saloon
• Quad 100 mm bright polished tailpipes for an OEM plus, motorsport inspired finish
• T304 aerospace grade stainless throughout for longevity and corrosion resistance
• Free flowing mandrel bent pipework for improved gas speed and responsiveness
• Developed in the UK for a clean, sporty note without intrusive cabin boom
• Requires cutting the original system during installation
• Milltek Part Number: SSXBM1162

Vehicle compatibility

• BMW 3 Series G20 M340i xDrive Saloon
• Model years 2019, 2020, 2021
• For cars fitted with OPF GPF only

Built to perform and last

Every section is made in the UK from non magnetic T304 stainless, including silencers and hardware. Smooth radius bends maintain diameter through the curves to keep flow consistent, supporting performance while retaining that all important mid range torque. The acoustic tuning delivers a mature soundtrack at cruise with a punchy, aggressive bark under load.

Real world feedback

We have installed this system on customer M340i vehicles and the response has been overwhelmingly positive. Owners love the deeper tone, the cleaner look with the large quad exits and the quality of the welds and finish.

What’s included

• Milltek rear section assembly configured for OPF GPF removal
• Four GT100 100 mm polished tailpipe trims
• Clamps and fittings as supplied by Milltek

Fitting and support

This upgrade involves cutting the factory exhaust. Professional installation is strongly recommended. For expert fitting, book with MJ Modifications in Warwickshire — request a quote at info@mjmodifications.co.uk.

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