Milltek Sport Cat-Back Exhaust for BMW 1 Series 123d M Sport (E87) 5-Door Hatchback 2004-On | T304 Stainless Steel Performance | UK Made

British-built performance exhaust system for BMW 1 Series 123d M Sport E87 5 door

Give your 123d the sound and quality it deserves with this Milltek performance system running from the catalyst to the tailpipes. Handcrafted in Britain from austenitic 304 stainless, it is designed for long-term durability, clean looks and a purposeful tone that complements the BMW diesel’s character. If you are searching for a stainless sports exhaust for the E87 1 Series 123d hatch, a rear section upgrade for the 5 door M Sport, or a premium UK-made system for your 2004 onward car, this is the go-to choice.

Engineered for smooth flow and precise fitment, the tubing is mandrel formed to maintain consistent diameter through the bends, helping the engine breathe more freely. The result is a deeper, crisper soundtrack under load with comfortable cruising manners and minimal cabin boom. It installs using the factory hangers and hardware points for a straightforward bolt-on upgrade.

• From-catalyst rear exhaust system for BMW 1 Series 123d M Sport E87 5 door, 2004 onward
• Austenitic 304 stainless construction for exceptional corrosion resistance and a long service life
• Constant-radius mandrel-formed pipework for efficient gas flow and refined sound
• Deep, sporty tone without the unwanted drone associated with lesser systems
• Hand finished in the UK by experienced fabricators for excellent fit and finish

We run these systems on our own cars and have installed them for many customers. Feedback is always the same: outstanding build quality, spot-on fitment and a mature, sporty sound that enhances daily driving and spirited runs alike. Looking for a stainless rear box upgrade, a performance rear section for the 123d diesel, or a UK-crafted exhaust for your E87 hatchback? This Milltek ticks every box.

Compatibility
BMW 1 Series 123d M Sport E87 5 door hatchback, 2004 onward. Replaces the exhaust from the catalytic converter rearwards while retaining original mounting locations.

Professional installation
Prefer expert fitting? Book with MJ Modifications in Warwickshire. Request a fitting quote: info@mjmodifications.co.uk

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