Milltek Sport Cat-Back Exhaust System for BMW G20 M340i xDrive (B58, 2019+) with OPF/GPF Bypass Quad Polished or Ceramic Black Tips

Milltek Performance Rear System for BMW G20 M340i xDrive with PPF Bypass

Unlock a richer soundtrack and sharper throttle response on your 3 Series M340i with this UK-built Milltek performance rear section. Designed specifically for the G20 xDrive model with the 3.0 turbo straight-six, this system replaces the pipework from the catalyst back and incorporates a particulate filter bypass for a freer flowing path and a more assertive tone. Expect a deeper, sportier voice with improved gas velocity and a premium motorsport character without the drone you get from lower grade systems.

We fit these for customers and the feedback is brilliant. The quality, the fit and the sound are exactly what M340i owners want. It looks the part and turns every drive into an occasion.

Key reasons to choose this upgrade

• Particulate filter bypass for OPF, GPF and PPF equipped cars to release volume and character
• Choose your finish: mirror polished quad exits or stealth ceramic-coated black quad tips
• Option to retain OE finishers or switch to Milltek quad outlet trims
• Precision engineered for BMW G20 M340i xDrive saloon, 2019 on
• Crafted in the UK from high grade stainless steel for longevity and consistency
• Straightforward bolt-on installation with factory mounting points

Part numbers and tailpipe choices

• SSXBM1160 - System with PPF bypass that retains the original BMW trim finishers
• SSXBM1162 - System with PPF bypass and Milltek quad mirror polished tailpipes
• SSXBM1163 - System with PPF bypass and Milltek quad ceramic black tailpipes

Vehicle fitment

BMW 3 Series G20 M340i xDrive saloon, 2019 to present, petrol particulate filter models. Suits the B58-powered variant.

What you will notice

• Full-bodied, deeper exhaust note with crisp overrun character
• Reduced back pressure for improved flow potential
• Premium finish that complements the M Performance styling

Recommended add-ons

Pair this system with Milltek cast downpipes for further temperature control and gas speed. The HJS 200-cell high-flow sports catalyst offers lower density than typical 500 to 600 cell OE units to enhance flow while helping maintain day-to-day emissions compliance where applicable.

Built by

Milltek Sport, UK

Warranty

Covered by Milltek Sport manufacturer warranty. Terms and conditions apply.

Professional installation

Prefer expert fitting in Warwickshire? Book with MJ Modifications. Email info@mjmodifications.co.uk for a tailored quote and lead times.

Search-friendly phrases

BMW G20 M340i rear exhaust, M340i xDrive quad exit system, B58 performance exhaust upgrade, BMW 3 Series M340i stainless system, PPF delete track pipe, BMW petrol particulate filter bypass, G20 M340i sound upgrade UK, quad polished tailpipes, ceramic black tips, Milltek UK made exhaust, BMW 3.0 turbo six exhaust, performance back section for M340i, free flow rear silencer, G20 340i performance pipework.

Important: OPF, GPF and PPF bypass systems are intended for off-road or track use where permitted. Please check local regulations before ordering and installing.