Milltek Sport Cat-Back Exhaust System for BMW 4 Series F32 428i Coupe (2014-2020) - Non-Resonated Louder, OE-Style Twin Outlet, Polished Tips, 304 Stainless Steel - Automatic, N20 Only, No Tow Bar - SSXBM1009

Milltek Sport Cat-Back Exhaust System for BMW 4 Series F32 428i Coupe (2014-2020) - Non-Resonated Louder, OE-Style Twin Outlet, Polished Tips, 304 Stainless Steel - Automatic, N20 Only, No Tow Bar - SSXBM1009

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Milltek Cat-back Exhaust - OE-style Twin Outlet - Non-resonated Louder - Polished Tips - BMW 4 Series F32 428i Coupe - Automatic - Without Tow Bar - N20 Engine - 2014 to 2020
Part Number: SSXBM1009

Unlock a sharper, louder and more engaging BMW 428i exhaust note with this Milltek cat-back system for the F32 4 Series. This non-resonated cat-back brings the volume and character enthusiasts want while retaining daily comfort. Built in the UK and finished to a premium standard, it delivers a crisp, sporty tone without drone or unwanted cabin resonance.

Every Milltek exhaust is designed, developed and hand-finished in the UK by time-served craftsmen using aerospace grade type 304 non-magnetic stainless steel. This high quality material resists discolouration and is used throughout the pipework, silencers and hardware for long-term durability and a consistently great finish.

Key features and benefits

  • Non-resonated cat-back for a louder, more aggressive BMW 428i exhaust note
  • OE-style twin outlet with polished tips for a clean factory look with added shine
  • Mandrel-bent pipework for constant radius bends and optimised gas flow
  • Carefully enlarged bore for performance without sacrificing mid-range torque
  • Comprehensive acoustic development for a sporty, crisp tone without NVH or drone
  • Crafted in the UK from type 304 stainless steel for strength and longevity

Fitment and compatibility

  • Vehicle: BMW 4 Series F32 428i Coupe
  • Engine: N20 only
  • Transmission: Automatic
  • Tow bar: Not compatible with vehicles fitted with a tow bar
  • Model years: 2014, 2015, 2016, 2017, 2018, 2019, 2020
  • Layout: Cat-back exhaust system replacing the exhaust from the catalytic converter back
  • Style: OE-style twin outlet with polished tailpipes
  • Part number: SSXBM1009

Why choose this Milltek system for your BMW F32 428i

  • Designed to enhance the character of the N20 engine with a deeper, louder soundtrack
  • Precise engineering for an excellent fit and high quality finish
  • Durable, corrosion-resistant construction for long-lasting performance

What our customers and team say

We have supplied and fitted this Milltek cat-back on multiple F32 428i cars and it consistently impresses with its build quality and sound. Owners love the louder non-resonated tone, the lack of drone at a cruise and the smart polished twin tips that keep an OE-style appearance.

Fitting and support

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

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