Milltek Sport BMW F70 M135 xDrive Exhaust System (OPF/GPF Vehicles)

Unleash the full character of your new BMW F70 M135 xDrive with the Milltek Sport OPF/GPF-compatible exhaust system, available in both a road-legal OPF-back configuration and an optional cat-back upgrade featuring an OPF-delete midpipe. Designed specifically for the 2024+ F70 M135, this system enhances sound, performance, and aesthetics without compromising factory driveability or build quality.

Crafted in the UK from high-grade T304L stainless steel, the system is mandrel-bent for optimal flow and durability. The OPF-back system offers a refined yet sporty tone while retaining the factory GPF/OPF, making it ideal for road use. For those seeking maximum sound and performance, the OPF-delete midpipe upgrade transforms the system into a full cat-back exhaust, delivering a more aggressive note and reduced backpressure—perfect for tuned or track-focused setups.

To complete the package, Milltek offers a range of premium tailpipe options to suit your personal style, including Polished Chrome, Cerakote Black, Burnt Titanium, and Brushed Titanium finishes. This is a truly modular and upgradeable solution for enthusiasts who want the best of both sound and substance from their M135.

Key Features

• Designed for BMW F70 M135 xDrive (2024+)
• OPF-back configuration for road-legal use
• Optional OPF-delete midpipe converts it to a cat-back exhaust
• Made from T304L stainless steel with mandrel-bent pipework
• Enhanced throttle response and deeper exhaust tone
• Direct fitment to OEM mounting points – no cutting or welding
• Choice of tailpipe finishes:
  • Polished Chrome Tips
  • Cerakote Black Tips
  • Burnt Titanium Tips
  • Brushed Titanium Tips

Compatibility

• BMW F70 M135 xDrive (2024+)
  For petrol models with GPF/OPF

Note: OPF-delete midpipe is not road legal in all regions. For off-road or track use only where applicable.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

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