Akrapovic Evolution Line (Stainless Steel) - BMW 3 Series F30/F31 340i | F32/F33 4 Series 440i 1 Series (E87) Please be aware that the

Please be aware that the S55 can suffer from crank hub slip

and aggressive racing sound

Additional 30 hp on a stock vehicle

Already have other modifications

Connection to the turbo downpipe diameter 118mm

Akrapovic Evolution Line (Stainless Steel) - BMW 3 Series F30/F31 340i | F32/F33 4 Series 440i 1 Series (E87) Please be aware that theEvolution exhaust systems for the BMW 340i 440i are the result of the perfect integration of expertise, the best technology, and the use of the finest materials. Made of austenitic stainless steel, these systems feature a layout with two central mandatory link pipes replacing the single stock pipe. The system is finished with carbon fibre tailpipes. This sporty elegance makes this Bavarian machine stand out from the rest and offers the taste of a more