Milltek Cat-Back Exhaust for BMW 4 Series F32 428i Coupe (N20, Manual) 20142020 435i-Style Dual Exit, Non-Resonated, Cerakote Black Tips Requires 435i M Sport Rear Valance SSXBM1006

Milltek Sport catback for BMW F32 428i Coupe N20 2014 to 2020, twin exit conversion with black ceramic coated tailpipes, non resonated, part number SSXBM1006

Give your BMW 4 Series 428i the sound and look it deserves with this Milltek performance exhaust. This catback transforms the single outlet into a twin exit layout for a sleek OEM plus appearance that mirrors the 435i, complete with stealthy Cerakote black tailpipes. Expect a deeper, sportier soundtrack with a louder non resonated tone, improved flow for the turbocharged N20 engine and premium UK build quality throughout.

Key reasons enthusiasts choose this upgrade

• High grade T304 stainless steel for long term durability and corrosion resistance
• CNC mandrel bent tubework for smooth gas flow and sharper throttle response
• Non resonated configuration for an assertive, louder than stock note without unwanted cabin boom
• Twin exit rear section for a 435i style appearance using the required M Sport rear diffuser
• Cerakote black twin tailpipes for a heat resistant, premium satin finish
• Hand finished in the UK with precise fitment and refined sound tuning
• Perfect for owners seeking a BMW 428i exhaust upgrade, F32 dual exit conversion or sport back box replacement

Fitment information and important notes

• Chassis: BMW 4 Series F32 428i Coupe
• Engine: N20 turbo four cylinder
• Transmission: manual only
• Model years: 2014, 2015, 2016, 2017, 2018, 2019, 2020
• Rear diffuser requirement: 435i M Sport rear valance is required for the twin outlet layout
• Tow bar: not suitable for vehicles fitted with a tow bar
• Milltek part number: SSXBM1006

How it sounds

This Milltek system delivers a deeper, more engaging tone with a crisp turbo whistle and a sporty bark under load. Non resonated means louder than the factory system, yet Milltek’s acoustic development keeps cruising refined with minimal cabin resonance. It is the ideal balance for daily use and weekend blasts.

Built to perform, built to last

Crafted from T304 stainless with consistent diameter pipework and smooth radius bends, this performance system is designed to reduce restriction compared to the OE exhaust. The result is freer breathing, enhanced response and an authentic motorsport character. We have fitted these for customers and feedback has been excellent on sound quality, finish and fit.

Popular search terms this product answers

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Professional installation

We recommend professional fitting for the best result. Book installation with MJ Modifications in Warwickshire. To request a quote, email info@mjmodifications.co.uk.