DPF Back Milltek BMW 1 Series F40 M135i xDrive 2019-2024 - ECE homologated - non-resonated - dual GT115 titanium tips

Milltek Sport DPF-back exhaust for BMW 1 Series F40

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

Technical specifications

• Milltek part number: SSXBM1154
• Part type: DPF-back exhaust
• Configuration: non-resonated (no resonator), with valves
• Details: ECE homologated, no resonator, dual GT115 titanium tips
• Tube diameter: 76.2 mm (3 in)
• Tips: 2 GT115 tips, 115 mm
• Tip finish: titanium finish
• Installation details: requires cutting the factory exhaust, with valve
• Material: aerospace-grade stainless steel
• Homologation: ECE / EC homologated
• Manufacturer: Milltek Sport (UK)

Vehicle fitment

• BMW 1 Series F40 M135i xDrive 2.0 Turbo 306 hp (xDrive, 5-door, 2019-2024, with DPF)

Not sure it fits your vehicle? Contact us with your chassis number (VIN) before ordering.

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 a slight drone that may appear at certain engine speeds on long journeys. If you do a lot of motorway driving, compare it with the resonated version.
• What about the neighbors in the morning? The valves are controlled as on the factory system: closed and quiet on startup or in comfort mode, fully open in sport mode.
• Homologation: this system is ECE / EC homologated, a real plus for driving with peace of mind and passing the contrôle technique.
• Fitting: installation requires cutting the factory exhaust. We recommend having it fitted by a professional.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhausts in England, using mandrel-bent tubing to preserve the internal diameter and a fitment developed specifically for the vehicle. The result: a clean installation with no modification needed, and a sound tuned to remain pleasant for daily driving.

Further reading

• Resonated or non-resonated cat-back exhaust: which one for your car?
• Exhaust valves explained: how they work and whether to keep them
• Exhaust systems and the contrôle technique in France