Milltek Sport Cat-Back Exhaust (Resonated) for BMW 1 Series M140i F20/F21 LCI 2015-2019 (3/5 Door) – Burnt Blue Titanium GT90 90mm Tips | Performance Catback / Back Box | T304 Stainless, UK Made, Bolt-On B58 Hatchback

Unlock the soundtrack your BMW M140i deserves

Give your 1 Series M140i a purposeful voice and premium finish with this UK-built Milltek rear system. The silenced layout delivers a deep, clean tone on throttle with low cabin resonance at motorway speeds, and the stunning 90 mm GT90 burnt blue titanium finishers sharpen the rear end with a true motorsport look. It is a direct bolt-on rear section that mates to the factory front pipe on the facelift F20 and F21 chassis from 2015 onwards, both 3 door and 5 door models.

Highlights

• Refined sound control from the resonated centre section for everyday driving without intrusive boom.
• GT-90 burnt titanium 90 mm tailpipe finishers for an aggressive, high-end aesthetic.
• Crafted in Britain from 304 grade austenitic stainless steel with mandrel-bent tube work for smooth gas flow.
• Precision fitment to OEM hangers and factory mounting points for an easy, hassle-free install.
• Developed specifically for the BMW M140i F20 F21 LCI facelift 2015 to 2019, 3-door and 5-door hatchback.
• Crisp, sporty exhaust note that complements the B58 turbo straight-six without excessive interior resonance.

Why this upgrade

Milltek’s UK engineering and acoustic development deliver a polished tone that enhances character without droning. The free-flowing design helps the engine breathe more efficiently for sharper response, while the burnt blue GT90 tips give a distinctive OEM-plus finish. We have fitted this system on customer cars and feedback has been consistently excellent on sound quality, fitment and overall finish.

Fitment

BMW M140i F20 F21 LCI 2015 onwards. Suitable for both 3-door and 5-door. Cat-back configuration that connects to the original front section on the M140i platform.

What is included

• Milltek resonated rear section for BMW M140i F20 F21 LCI.
• Pair of GT90 burnt titanium tailpipes.
• Clamps and fittings as supplied by the manufacturer.

Built to last

Constructed from high quality 304 stainless steel for durability and corrosion resistance, with carefully designed silencers and smooth-radius bends for optimal flow and a clean tone. The result is a premium upgrade that looks, sounds and feels right every time you drive.

Professional installation

This is a straightforward bolt-on job using the factory mounts. For a seamless fit and alignment, we recommend booking installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Search-friendly fitment and synonyms

BMW 1 Series M140i exhaust upgrade, F20 F21 facelift rear exhaust, M140i B58 performance exhaust, 1 Series hatchback sports exhaust, GT90 burnt blue tips 90 mm, UK built stainless catback, M140i 2015 2016 2017 2018 2019 exhaust system, Milltek M140i rear section, resonated centre section M140i, bolt-on exhaust for BMW 1 Series M Performance, M140i 3 door exhaust, M140i 5 door exhaust, stainless steel performance rear box, free flowing silenced system, BMW M140i sound upgrade, F20 F21 LCI catback with titanium finishers, GT-90 tailpipe upgrade.