Milltek Sport Cat-Back Exhaust for BMW 3 Series F30 320i L LWB M Sport 2012-2020 (inc LCI) - Race Non-Resonated, Dual Outlet Twin Exit, Black Cerakote GT-90 90mm Tips - Requires M340i Rear Valance - SSXBM1068

Performance exhaust upgrade for BMW F30 320i LWB M Sport (2012 to 2020, incl. LCI)

Give your 3 Series a sharper voice and a cleaner, motorsport-inspired rear end with this UK-made Milltek system. This non-res cat back delivers a louder, crisper tone, improved flow and a purposeful twin-pipe appearance that mirrors the M340i look. Finished in stealth Black Cerakote with GT90 90 mm tailpipes, it is the perfect twin outlet conversion for the long wheelbase 320i.

Part number: SSXBM1068

Why enthusiasts choose this upgrade

• Non-res specification for a more aggressive soundtrack with Milltek’s expert acoustic tuning to help minimise unwanted cabin boom.
• Twin exit layout for a symmetrical rear aesthetic and a genuine performance-car presence.
• GT90 90 mm black ceramic coated tips for a premium, subtle finish that resists heat discolouration.
• T304 stainless steel throughout for long-term durability and corrosion resistance.
• Mandrel bent pipework and enlarged bore for smoother gas flow and responsive performance without sacrificing mid-range torque.
• Designed, developed and hand finished in the UK; utilises factory mounting points for a precise fit.
• Direct replacement cat back system engineered for the BMW F30 320i L long wheelbase platform.

Fitment and notes

Compatible with BMW 3 Series F30 320i L Long Wheel Base, M Sport, model years 2012–2020 including facelift (LCI). This twin outlet setup requires an M340i rear lower valance/diffuser for correct fitment of the dual tailpipes. Rear valance not included.

Real-world results

We have installed this Milltek system on customer cars and our own builds. Feedback has been consistently excellent on sound quality, finish and fitment. It delivers the sporty tone you want with the refined engineering you expect from a leading UK exhaust specialist.

Professional installation

Want it fitted properly first time? Book expert installation with MJ Modifications in Warwickshire. For a quotation and guidance on the required M340i rear valance, email info@mjmodifications.co.uk.

Search-friendly terms

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