• Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips
  • Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips
  • Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips
  • Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips
  • Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips

Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips

$4,395.56
$4,395.56
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Milltek OPF/GPF-Back exhaust system for BMW G8X M3 and M4 (late 2018 onwards). Direct cat-back fitment from the factory Gasoline Particulate Filter. Centre resonator bypass tuning unlocks the engineered tone designed into the M platform while meeting emissions requirements. No modification required - uses OEM hangers and factory mounting points.

Hand-finished T304L stainless steel construction with CNC-formed GT-115 Cerakote Black polished tips. Mandrel-bent throughout for optimal flow dynamics. The bypass system compensates for the acoustic dampening of the OPF, delivering the full character of the M3/M4 powerplant across the rev range. Decibel-tuned for full-throttle presence without resonance peaks at cruise.

Fitment

  • BMW M3 G80 (2021+)
  • BMW M4 G82/G83 (2021+)
  • OPF/GPF equipped models only
  • Requires OE filter removal

EC Type Approved.

Fits OE system.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Milltek 80mm OPF/GPF Back Exhaust | BMW G8X M3 M4 - Cerakote Black Tips

$4,395.56

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Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.