DPF Back Milltek BMW 1 Series F40 128ti 2.0 2021-2024 with DPF, Maxton x Milltek, non-resonated, Quad GT100 Blued Titanium tips

Milltek Sport DPF-Back Exhaust System for BMW 1 Series F40

Is the stock sound of your BMW 1 Series F40 leaving you wanting more? This Milltek Sport stainless steel DPF-back system is the most requested upgrade among owners: more presence, a true sound signature and build quality that lasts.

Technical specifications

• Milltek reference: SSXBM1251
• Part type: DPF-back exhaust system
• Configuration: non-resonated (without resonator), with valves
• Details: Maxton x Milltek, without resonator, quad GT100 blued titanium tips
• Tube diameter: 76.2 mm (3 inches)
• Tips: 4 GT100 tips, 100 mm
• Tip finish: blued titanium (heat-tinted effect)
• Fitting information: Maxton diffuser required for fitting, with valves, ECE homologation pending
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• BMW 1 Series F40 128ti 2.0 245-265 hp (5 Doors, 2021-2024, with DPF)

Not sure it fits your vehicle? Contact us with your VIN before ordering.

Our most frequently asked questions

• Resonated or non-resonated? This version is non-resonated (no resonator): it is the most expressive, with more crackling on lift-off. The trade-off is that a slight drone can appear at certain engine speeds on long trips. If you do a lot of highway driving, compare it with the resonated version.
• What about the neighbors in the morning? The valves are controlled as on the original: closed and discreet at startup or in comfort mode, fully open in sport mode.
• Fitting: the system uses the original mounting points. A shop with the right equipment usually fits it in one to two hours.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhaust systems in England, using mandrel-bent tubing to preserve the inner diameter and a fit developed on the vehicle. Result: a clean installation with no modification, and a tuned sound that stays pleasant for everyday driving.

Further reading

• Resonated or non-resonated cat-back exhaust: which one is right for your car?
• Exhaust valves: how do they work and should you keep them?