Milltek SSXBM1160 Cat-Back OPF/GPF Bypass Exhaust for BMW G20 M340i xDrive 3 Series Saloon 2019-2021 | T304 Stainless Sports Rear System / Axle-Back Back Box | Fits OE Tips | Requires Cut | B58 M340i Exhaust Upgrade

Milltek SSXBM1160 Performance Rear System for BMW G20 M340i xDrive Saloon 2019 to 2021

Give your M340i the voice and flow it deserves with the Milltek SSXBM1160 rear section. Crafted in Britain from premium austenitic 304 stainless, this free‑flow system replaces the factory section after the catalyst and is designed to bypass the particulate filter hardware on applicable cars. Expect a sharper, richer soundtrack with improved breathing while keeping a refined cruise.

Engineered to reuse the original tailpipe finishers for a factory look, the SSXBM1160 uses constant‑radius bends and enlarged pipework for smooth gas velocity. Cabin comfort remains civilised with minimal boom, yet the car sounds purposeful when you want it to. It suits vehicles equipped with OPF and GPF hardware across model years 2019, 2020 and 2021 and requires a cut to the standard exhaust during installation.

Why enthusiasts choose SSXBM1160

• Made in the UK from high‑grade T304 stainless for long‑term durability and corrosion resistance
• Optimised tube diameter and smooth bends for better flow and response
• Keeps the OEM tips for a clean, factory appearance
• Deep, sporty tone under load with minimal cabin resonance on the motorway
• Proven quality and fitment. We have fitted this system for customers and feedback on sound, finish and fit is consistently excellent
• Genuine Milltek part number: SSXBM1160

Compatibility

• Vehicle: BMW 3 Series G20 M340i xDrive Saloon
• Years: 2019, 2020, 2021
• For cars with OPF and GPF hardware
• Reuses factory tail trims
• Installation note: requires cutting the original system

Professional fitting

Want it installed properly first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.

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