Milltek Sport Non-Resonated Race Rear Exhaust for BMW 1 Series M140i F20/F21 LCI (2015+) – Axle‑Back/Backbox Muffler Upgrade, B58, 90mm Carbon Tips – T304 Stainless, UK Made – 3 & 5 Door

Performance Rear Exhaust System for BMW M140i F20/F21 LCI with Carbon Fibre 90 mm Tips

Unlock the soundtrack your 1 Series deserves. This British-built Milltek Sport rear system is the loud, unsilenced option with stunning 90 mm carbon fibre twin tailpipe finishers, tailored for the BMW M140i F20 and F21 LCI facelift models, 3 door and 5 door, 2015 onward. It delivers a fierce, motorsport-style tone, enhanced flow and a premium OEM-plus look that turns heads without compromising everyday use.

Why enthusiasts choose this upgrade

• Loud version for a sharper, more aggressive note on throttle and a deeper burble at idle
• Carbon fibre 90 mm rolled tailpipes for a high-end, stealthy aesthetic
• Direct fit to factory mounting points on facelift M140i hatchback models
• Austenitic 304-grade stainless steel throughout for durability and corrosion resistance
• Mandrel-bent pipework and smooth transitions to support freer breathing from the B58 turbo straight-six
• Precision TIG-welded workmanship, engineered and hand finished in the UK

Engineered sound, real-world driveability

Expect a crisp, track-inspired character with pronounced tone under load and refined manners on the cruise. The free-flowing design helps the B58 respond keenly, enhancing the sense of urgency through the rev range while keeping cabin resonance well controlled.

Vehicle compatibility

Fits BMW M140i F20 and F21 LCI facelift models, 3 door and 5 door, 2015 onward. Designed as a direct replacement rear system using OEM hangers for straightforward installation on standard cars.

What is included

• Milltek Sport rear section system in loud, non-resonated configuration
• Dual 90 mm carbon fibre tailpipe trims
• Manufacturer-supplied clamps and hardware for fitment

Used and recommended by us

We run this system on our own builds and our customers love the tone, the fit and the finish. Feedback has been consistently positive for the sound quality and the high-end look of the carbon tips.

Professional fitting

Want it installed by specialists who know the M140i inside out? Book expert fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Key highlights

• Performance rear exhaust upgrade for BMW 1 Series M140i F20/F21 LCI
• Loud, unsilenced layout for maximum character and presence
• Premium 90 mm carbon fibre tailpipe finishers
• 304 stainless steel construction, UK engineered and hand finished
• Direct bolt-on fitment using factory mounts and rubbers

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