BMW M3 F80 / M4 F8x Alpha Competition Mid-pipe Exhaust Resonator / GPF Delete View larger
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BMW M3 F80 / M4 F8x Alpha Competition Mid-pipe Exhaust Resonator / GPF Delete

AC-S55-MP

EC Approved: NO

Shipped from the EU

643,89 €

579,50 € VAT incl.

This Alpha Competition kit, consisting of 3.5" / 89mm and 2x 2.75" / 70mm diameter stainless steel front and middle exhaust pipes, fits without modification from the downpipes to the rear silencer on the BMW M3 F80 and M4 F8x to eliminate the restrictive stock resonators and particulate filters on GPF equipped models. Providing an aggressive sound and a significant power gain due to the release of the exhaust, this Alpha Competition mid-pipe kit is a must-have upgrade for S55 engines !

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Direct bolt on

100% T304 grade stainless steel

TIG welded

Dyno proven gain on stock engine : 18 to 24hp

3.5" / 89mm and 2.75" / 70mm pipework

Aggressive tone

Hardware included

Lifetime warranty

- Remap required for cars with GPF -

Compatibility Image 1
Compatibility Image 2
- This product is compatible with all these cars -
Brand Model Type Version
BMW 3 Series Fxx - 13-19 M3 - 431 / 450 / 460
BMW 4 Series Fxx- 13-19 M4 - 431 / 450 / 460
Further information
Our technical specifications and compatibilities refer to the standard equipment of the vehicles mentioned, in case of doubt about the compatibility of a product, please contact our customer service to answer your questions.

No Instructions

Difficulty Level:

Difficulty2
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Compatibility Image 1
Compatibility Image 2
- This product is compatible with all these cars -
Brand Model Type Version
BMW 3 Series Fxx - 13-19 M3 - 431 / 450 / 460
BMW 4 Series Fxx- 13-19 M4 - 431 / 450 / 460
Shipping Options

No Instructions

Difficulty Level:

Difficulty2

Alpha Competition products are inspected and certified as compliant before shipping. This certification is complementary to the manufacturer's warranty covering manufacturing or material defects for one year on most products in the range. Intercoolers and exhausts have a non-transferable lifetime warranty, but do not cover aesthetic defects that may appear over time. The replacement or repair of the products will depend on the decision of the manufacturer, who will be entitled to request proof or return for expertise of the items concerned. Return costs and third-party costs are not covered by the Alpha Competition warranty.

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Reviews (2)

Grade 
01/19/2026

Top qualité, très bon produit. Sonorité incroyable !!! Je recommande a 100%

Grade 
08/21/2021

Very nice system, perfect fit and great looking.Sounds amazing, throaty at idle and growls under hard acceleration.

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BMW M3 F80 / M4 F8x Alpha Competition Mid-pipe Exhaust Resonator / GPF Delete