Milltek Sport Cat-Back Exhaust for BMW 4 Series F32 428i Coupe (2014-2020, N20, Manual, No Tow Bar) – 435i-Style Dual-Outlet, Non-Resonated (Louder), Titanium Tips – Requires BMW 435i M Sport Rear Valance – SSXBM1020

Milltek Sport Cat-Back Exhaust for BMW 4 Series F32 428i Coupe (2014-2020, N20, Manual, No Tow Bar) – 435i-Style Dual-Outlet, Non-Resonated (Louder), Titanium Tips – Requires BMW 435i M Sport Rear Valance – SSXBM1020

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Milltek Cat-back Exhaust for BMW F32 428i Coupe - 435i-style Dual-Outlet - Non-Resonated Louder with Titanium Tips - SSXBM1020

Transform your BMW 4 Series with the Milltek Cat-back exhaust system designed specifically for the F32 428i Coupe with the N20 engine. This non-resonated louder 435i-style dual-outlet system with titanium tips delivers a sharper, sportier soundtrack and an aggressive OEM-plus look. Part number SSXBM1020.

Key features

  • Direct-fit Milltek cat-back exhaust for BMW F32 428i Coupe N20 engine only
  • 435i-style dual-outlet look for a factory-quality aesthetic upgrade
  • Non-resonated configuration for a louder, more engaging exhaust note
  • Titanium tips for a premium finish and motorsport-inspired style
  • Hand-built in the UK using aerospace grade type 304 stainless steel
  • Mandrel-bent pipework for optimised gas flow and performance potential
  • Acoustically developed to deliver a sporty tone without intrusive drone
  • Corrosion-resistant, durable construction designed to last

Fitment and requirements

  • BMW 4 Series F32 428i Coupe - 2014 to 2020
  • N20 engine only
  • Manual gearbox
  • Without tow bar
  • Requires BMW 435i M Sport rear valance from your BMW dealer for the dual-outlet finish

Part number: SSXBM1020

Why choose Milltek for your BMW 428i F32

Every Milltek system is designed, developed and hand-finished in the UK by time-served craftsmen using type 304, non-magnetic stainless steel throughout. Mandrel bending maintains a constant radius for smooth, unrestricted flow, while carefully chosen bore diameters are enlarged over stock to help the engine breathe. Each system undergoes a comprehensive acoustic development process to achieve a crisp, sporty tone without unwanted NVH or cabin resonance.

Real-world satisfaction

We rate this system highly for its quality, fit and sound. Customers choose it for the OEM-plus 435i-style rear look and the non-resonated louder soundtrack that brings the 428i to life without compromising day-to-day use.

Installation and support

Professional fitting recommended. Nforcd offers installation and support from our Warwickshire workshop. Request a fitting quote at Sales@nforcd.com.

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