Milltek Cat-Back Exhaust for BMW F32 428i Coupe (N20, Automatic) 2014-2020 - 435i-Style Dual-Outlet Conversion - Non-Resonated, Titanium Tips - T304 Stainless - Requires 435i M Sport Rear Valance - No Tow Bar - SSXBM1022

Milltek Cat-Back Exhaust for BMW F32 428i Coupe (N20, Automatic) 2014-2020 - 435i-Style Dual-Outlet Conversion - Non-Resonated, Titanium Tips - T304 Stainless - Requires 435i M Sport Rear Valance - No Tow Bar - SSXBM1022

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Milltek Cat-back Exhaust - 435i-style Dual Outlet - Non-resonated - Titanium Tips - BMW F32 428i Coupe N20 2014 to 2020 - SSXBM1022

Unlock the sound and style your BMW 4 Series deserves with the Milltek cat-back exhaust for the F32 428i Coupe N20. This 435i-style dual-outlet conversion transforms your single-exit 428i into a premium twin-exit look with a deeper, crisper, louder non-resonated tone. Finished with stunning titanium tips and crafted in the UK from aerospace-grade type 304 stainless steel, Milltek SSXBM1022 is the ultimate BMW 428i cat back upgrade for drivers who want performance, presence and quality.

Milltek’s UK-built systems are hand-finished by time-served craftsmen using T304 non-magnetic stainless steel throughout the pipework, silencers and hardware. Mandrel-bent tubing and carefully enlarged bore diameters deliver optimised gas flow for sharper throttle response and a sporty, clean exhaust note without NVH, drone or tiring cabin resonance. If you are searching for BMW F32 428i cat-back, BMW 428i exhaust upgrade, Milltek 428i exhaust, 435i-style dual exit conversion, non-resonated BMW 428i, titanium tips BMW 4 Series exhaust or SSXBM1022, this is the system to choose.

Why choose this Milltek cat-back for your BMW 428i

  • 435i-style dual-outlet conversion for an aggressive OEM-plus look
  • Non-resonated layout for a louder, more engaging sound
  • Titanium tailpipes for a premium motorsport-inspired finish
  • Hand-built in the UK from aerospace-grade T304 stainless steel
  • Mandrel-bent tubing and enlarged bores for optimised gas flow
  • Refined tone development to avoid NVH, drone and cabin boom
  • Direct cat-back fitment for the BMW F32 428i Coupe N20
  • Durable construction that resists discolouration and corrosion
  • Perfect upgrade for BMW 4 Series enthusiasts seeking style, sound and quality

Fitment and compatibility

  • Vehicle: BMW 4 Series F32 428i Coupe
  • Engine: N20 petrol
  • Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020
  • Transmission: Automatic only
  • Tow bar: Not compatible with vehicles fitted with a tow bar
  • Part number: Milltek SSXBM1022

Important: This dual-outlet conversion requires a 435i M Sport rear valance from your BMW dealer. The correct 435i-style diffuser is essential to accommodate the twin tips.

Real-world results

We have fitted and used this Milltek system on multiple BMW 428i builds and the feedback from customers has been consistently excellent. Expect a sharp, sporty, non-resonated soundtrack with a noticeable step up in character while maintaining day-to-day usability.

Materials and build

  • T304 non-magnetic stainless steel for long-term durability
  • Precision mandrel bends to maintain constant radius and flow
  • Designed, developed and hand-finished in the UK

Installation and fitting

Professional fitting recommended. Nforcd offers installation in Warwickshire and the surrounding areas. Request a fitting quote: Sales@nforcd.com.

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