Milltek Sport Exhaust OPF/GPF Delete Bypass Pipe + Plug & Play Controller for BMW 128ti F40 1 Series 5-Door (2021+) - Fits Milltek Cat-Back Only - No Remap Required - Particulate Filter Delete/Remover - OPF Emulator Module - Track Use - SSXBM1201

SSXBM1201 Milltek Particulate Filter Bypass Kit for BMW 128ti F40 5 Door 2021 onwards

Turn up the character of your BMW 1 Series 128ti with the Milltek SSXBM1201 particulate filter bypass kit. This upgrade removes the restriction of the factory gasoline particulate filter on OPF equipped cars and is supplied with a plug in controller so no remap or coding is needed. It is engineered to work with an existing Milltek Sport cat back on the F40 128ti for a precise, hassle free install and a richer, more engaging soundtrack.

Why enthusiasts choose SSXBM1201 for the 128ti

• Sharper, deeper exhaust tone that lets the 2.0 turbo breathe
• Reduced back pressure for smoother flow and instant response feel
• Plug and play module included so no ECU tune required
• Built for cars already fitted with a Milltek system for perfect alignment
• Crafted from high grade T304 stainless steel for long term durability
• Mandrel formed tubing maintains consistent diameter for maximum gas velocity
• Developed and manufactured in Britain to premium standards

What you get

• Milltek OPF bypass section for BMW 128ti F40
• Plug in bypass controller to prevent fault lights and limp mode
• Fitting hardware to connect to your existing Milltek Sport exhaust
• Official part number SSXBM1201

Fitment information

• Vehicle compatibility BMW 128ti F40 5 door 2021 onward with OPF
• Requires an installed Milltek Sport cat back on the vehicle
• No software calibration or remapping necessary

Build quality and sound

Milltek uses corrosion resistant T304 stainless steel and precision formed pipework to keep exhaust gas speed high and temperatures stable. The result is a fuller tone, crisper upshifts and a more authentic hot hatch sound without intrusive cabin boom when cruising.

Fitting and support

Professional installation is recommended. MJ Modifications in Warwickshire has installed this kit on multiple customer 128ti builds and feedback on fit, finish and sound has been excellent. To book fitting or request a quote, email info@mjmodifications.co.uk.

Important notes

SSXBM1201 is designed to be used only with a Milltek Sport system on the BMW 128ti F40. Check local regulations. Removal or bypass of emissions equipment may be for off road or track use only in some regions.

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