Milltek Cat-back Exhaust for BMW F32 428i Coupe N20 (2014–2020) – 435i-Style Dual-Outlet, Non-Resonated, Polished Tips
Part number: SSXBM1013
Upgrade your BMW 4 Series with the Milltek Sport cat-back exhaust for the F32 428i N20. This non-resonated, louder performance exhaust transforms your 428i with a 435i-style twin outlet and polished tailpipes, delivering a sharper, sportier soundtrack and improved gas flow. Designed specifically for the BMW F32 428i Coupe N20 2.0 turbo (automatic, without tow bar), this Milltek cat-back is the ideal dual-exit exhaust conversion for drivers who want aggressive sound, premium build quality and OEM-plus aesthetics.
Every Milltek Sport exhaust is designed, developed and hand-finished in the UK by time-served craftsmen. Constructed from aerospace-grade type 304 non-magnetic stainless steel, it resists discolouration and is built to last. With mandrel-bent pipework and carefully enlarged bore diameters over stock, this system optimises gas flow for performance without sacrificing mid-range torque. Milltek’s comprehensive acoustic tuning delivers a crisp, sporty tone without NVH, drone or unwanted cabin resonance.
Why choose this Milltek cat-back for your BMW 428i F32
- 435i-style dual-outlet look for a clean OEM-plus twin exit conversion.
- Non-resonated for a louder, more aggressive exhaust note.
- Polished tips for a premium finish at the rear.
- Type 304 stainless steel throughout for durability and corrosion resistance.
- Mandrel-bent pipework and optimised bore for enhanced gas flow and response.
- Refined sound engineering to avoid drone and unwanted cabin resonance.
- UK designed and hand-finished by Milltek Sport.
Fitment and compatibility
- Vehicle: BMW 4 Series F32 428i Coupe
- Engine: N20 only
- Years: 2014–2020
- Transmission: Automatic only
- Tow bar: Without tow bar only
- Style: 435i-style dual-outlet with polished tips
- Resonance: Non-resonated (louder)
- Important: Requires the 435i M Sport rear valance from your BMW dealer to complete the dual-exit conversion.
- Part number: SSXBM1013
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Nforcd recommendation
We run Milltek on our own cars and our customers consistently rate the fit, finish and sound highly. If you want an OEM-plus twin exit look with a deeper, more engaging tone on your F32 428i N20, this SSXBM1013 system is a proven choice.
Professional fitting
For installation, we recommend professional fitting at Nforcd in Warwickshire. Request a fitting quote: Sales@nforcd.com.