Milltek GPF/OPF Bypass for BMW 128ti F40 5 Door 2021 onwards, Part Number SSXBM1201
Upgrade your BMW 128ti F40 exhaust with the Milltek GPF OPF Bypass, part number SSXBM1201. This OPF GPF delete bypass is designed to fit to the Milltek Sport system only and includes the OPF GPF Bypass Module, so no ECU tuning is required. Perfect for owners looking for a sharper exhaust note and improved gas flow on OPF GPF equipped 128ti models from 2021 onwards.
Why choose the Milltek GPF OPF Bypass for BMW 128ti F40
This Milltek 128ti GPF delete solution is engineered in the UK for drivers who want a deeper, sportier exhaust tone and enhanced exhaust flow without intrusive drone. Built for the BMW 1 Series 128ti F40 platform, it works in harmony with your Milltek Sport cat back system to unlock the true character of the 2.0 turbo engine while keeping refinement inside the cabin.
Key features
- Direct compatibility with BMW 128ti 5 Door F40 2021 on, OPF GPF equipped
- Fits to the Milltek Sport system only for a precise, OE style installation
- Includes OPF GPF Bypass Module, no ECU tuning required
- T304 aerospace grade stainless steel, non magnetic and highly durable
- Mandrel bent pipework for optimised gas flow and response
- Enlarged bore diameters compared to stock for performance headroom
- Sporty, crisp sound developed to avoid NVH, drone or unwanted cabin resonance
- Designed, developed and hand finished in the UK by time served craftsmen
Construction and sound
Every Milltek exhaust component is produced from premium type 304 stainless steel for long term corrosion resistance and consistent finish. Precision mandrel bends maintain a constant radius that keeps exhaust gas velocity high, while carefully selected bore sizes give the 128ti a stronger, more engaging soundtrack without sacrificing drivability.
What is included
- Milltek GPF OPF Bypass section for BMW 128ti F40
- Milltek OPF GPF Bypass Module, plug in solution, no ECU map required
- All required componentry to fit to an existing Milltek Sport system
Compatibility and part number
- Vehicle: BMW 128ti 5 Door F40, 2021 onwards, OPF GPF equipped
- System: Fits to the Milltek Sport system only
- Part number: SSXBM1201
Nforcd fitment and support
Professional installation is recommended. We install Milltek exhaust upgrades in house at Nforcd, Warwickshire. We have fitted these systems for many BMW 128ti owners and feedback on the sound quality and fit is consistently excellent. For a fitting quote or advice, email Sales@nforcd.com.
SEO and search terms
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Important notes
This GPF OPF bypass fits only when used with a Milltek Sport system. Intended for vehicles equipped with an OPF GPF. Check local laws before purchase and use, as removal or bypass of emissions equipment may not be road legal in some regions.