Milltek Large-Bore De-Cat (Catless) Downpipe for BMW G20 M340i xDrive Saloon OPF/GPF Models 2019-2021 | Fits OE & Milltek Cat-Back | Requires Stage 2 ECU Remap | SSXTY119

Performance Front Pipe Upgrade for BMW 3 Series G20 M340i xDrive (2019 to 2021)

Part number: SSXTY119

Transform the way your M340i pulls and sounds with Milltek Sport’s large-bore turbo outlet front section. This race-focused primary pipe replaces the restrictive factory catalyst section to deliver faster spool, sharper throttle response and a harder-hitting soundtrack that really wakes the car up once paired with the correct software. It mates cleanly to the original rear system as well as Milltek’s own rear exhaust, giving you a precise, worry-free installation and a serious step up in performance character.

Crafted in the UK from premium 304-grade stainless steel, this Milltek unit is built for longevity with excellent corrosion resistance. Mandrel-formed tubing and beautifully finished welds ensure smooth, uninterrupted gas paths that reduce backpressure and maximise flow. The result is a freer-breathing 3 Series that feels more urgent across the rev range and sounds purposeful without the low-speed boom you get from poor-quality alternatives.

• Large diameter turbo front section for significantly increased exhaust flow
• 304 stainless construction for durability in all UK weather conditions
• Mandrel bends and precision welds for optimum gas velocity
• Engineered in Britain by Milltek Sport with meticulous fit and finish
• Bolts to the factory rear system and Milltek cat-back assemblies
• Developed for particulate filter equipped vehicles
• Requires Stage 2 ECU calibration to realise full gains
• Part number clearly referenced for easy ordering: SSXTY119

Compatibility and pairing

• BMW 3 Series G20 M340i xDrive Saloon with petrol particulate filter, model years 2019, 2020 and 2021
• Direct connection to OE rear section or Milltek Sport rear exhaust setups

Real-world results

We have fitted this Milltek front pipe for multiple customers and the feedback is consistently strong. Owners love the crisp fitment, premium materials and the addictive, motorsport-inspired tone under load. With the correct Stage 2 mapping, the car feels keener to rev and more responsive throughout.

Professional installation

Prefer expert fitting and a seamless experience? Book your installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and scheduling.

Why choose Milltek Sport SSXTY119

Milltek Sport’s UK-engineered hardware is the choice for enthusiasts who want trusted quality, perfect alignment and proven gains when moving to a Stage 2 setup. The SSXTY119 primary section unlocks the flow your tuning software needs, enhances turbo response and brings a deeper, richer note without compromising daily drivability.

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