Milltek Cat-back Exhaust Upgrade for BMW F32 428i Coupe N20 – 435i-Style Dual Outlet, Resonated, Polished Tips
Part Number: SSXBM1004
Transform your BMW 4 Series F32 428i Coupe with this Milltek cat-back exhaust system. Designed for the N20 engine and manual models without a tow bar, this 435i-style dual-outlet, resonated (quieter) system delivers a refined, sporty soundtrack with zero cabin drone. Finished with polished tailpipes for a premium factory-plus look.
Why choose Milltek for your BMW 428i F32?
- 435i-style dual-exit look for a clean, OEM-plus appearance. Requires the 435i M Sport rear valance from your BMW dealer.
- Resonated system for a more subtle, daily-friendly tone that is sporty and crisp without harshness.
- UK-made and hand-finished in aerospace-grade type 304 stainless steel for exceptional durability and corrosion resistance.
- Mandrel-bent pipework with carefully optimised bore sizes for improved gas flow and performance without sacrificing mid-range torque.
- No drone and no unwanted NVH thanks to Milltek’s comprehensive acoustic development.
- Polished tips complete the rear end with a premium finish.
Fitment
- BMW 4 Series F32 428i Coupe
- Engine: N20 only
- Transmission: Manual only
- Model years: 2014–2020
- Vehicle must be without tow bar
- Requires 435i M Sport rear valance from your BMW dealer to complete the dual-outlet conversion
Nforcd verdict
We’ve run Milltek systems on our own cars and fitted them for countless customers. Feedback is consistently positive: great build quality, a mature, performance-led sound, and a superb dual-exit aesthetic that suits the F32 perfectly. If you want a BMW 428i cat-back exhaust that enhances character without overwhelming volume, this resonated Milltek is the one.
Fitting and support
Professional installation recommended. Nforcd offers supply and fitting at our Warwickshire workshop. For a tailored quote or to book your install, email Sales@nforcd.com.
Key features at a glance
- Milltek Cat-back – 435i-style dual outlet
- Resonated (quieter) configuration
- Polished tailpipe finishers
- Type 304 non-magnetic stainless steel construction
- Mandrel-bent for optimised gas flow
- Crisp, sporty tone with no drone
- Direct cat-back upgrade for F32 428i N20 manual, no tow bar
- Part number: SSXBM1004
Search-friendly terms
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