BMW Catback Exhaust Systems for BMW F82 M4 S55 3.0L

We set out to amplify the F80/F82 with a proper exhaust system. To accomplish this goal, our engineers at Turner increased flow and delivered an exhaust system that captures the full unrestricted sound of the twin turbo inline-6 S55 engine. The increase in flow was gained from dual 2.5" stainless exhaust pipes that feed into one of the best designed mufflers on the market. Our in-house engineers specifically designed the muffler with flow in mind to ensure that even with the exhaust valves closed, our Turner muffler flows better and sounds better than the stock muffler. The best part of the catback exhaust is the capability to control just how aggressive you want to your exhaust to sound, far beyond the point that the factory exhaust is able to perform. All of this plus the direct fitment and straight forward installation leads to the Turner Stainless exhaust being the clear answer in your mission to find the best exhaust for your S55 powered F80 or F82.

Transform the whole dynamic of your M3 or M4 with added performance, increased flow and not to mention the absolutely wicked sound you get from the upgraded Turner Performance Catback!

Part Design:

Turner In-house designed and engineered using FARO ARM laser scanning technology and SolidWorks 3D CAD modeling for precision fitment.
304SS pipe Material in a natural finish
2.5"OD mandrel bent tubing
Barbed exhaust hangers Tig-Welded in OE locations for precise fitment.​
Strategically placed slip joints provide the most adjustability to obtain perfect fitment
Valved Muffler:
Optimized for superior flow over OEM
Utilizes factory valve control
Kit Contents:

Full 304SS Valved muffler utilizing oem style exhaust valves
High-Flow middle muffler section for better sound, performance and weight savings.
Dual 2.5" 304SS Mid-pipes
Clamps, gaskets and Hardware for an OEM+ install
Brushed Turner Exhaust tips - 2.5" Inlet, 4.0" Outlet