• Milltek 80mm Axle-Back Exhaust | BMW G8X M3 M4 - Polished Tips
  • Milltek 80mm Axle-Back Exhaust | BMW G8X M3 M4 - Polished Tips
  • Milltek 80mm Axle-Back Exhaust | BMW G8X M3 M4 - Polished Tips

Milltek 80mm Axle-Back Exhaust | BMW G8X M3 M4 - Polished Tips

$3,781.38
$3,781.38
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Milltek 80mm Axle-Back Exhaust System for BMW G8X M3 and M4. Direct bolt-on replacement for the OE rear silencer section, no modifications to mid-pipe required. Uses factory hangers and mounting points.

Constructed from T304L stainless steel with mandrel-bent 3.15" / 80mm primary pipes. GT-115 polished trim rings. Cutting of OE exhaust outlet required for fitment. Engineered to exhilarate with a more pronounced full-throttle character while maintaining composure at steady throttle.

Fitment

  • BMW G8X M3 (2021+)
  • BMW G8X M4 (2021+)
  • Axle-back configuration only (replaces rear silencer)

Construction & Finish

  • T304L stainless steel, hand-finished
  • Mandrel-bent primary pipes
  • Polished GT-115 trim rings
  • Direct OEM mounting compatibility

Milltek precision stainless steel systems are dyno-proven for sound character and flow efficiency across European and Japanese performance platforms.

Fits OE system.

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

Milltek 80mm Axle-Back Exhaust | BMW G8X M3 M4 - Polished Tips

$3,781.38

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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.