Armytrix Stainless Steel Valvetronic Exhaust System For Porsche 997.2 Mercedes Benz C190 AMG GTR 4.0TT M178 2017 2021 Valvetronic Catbac Vacuum Controller Exhaust Muffler Double with Remote Control BMW Fi Exhaust G02 X4 30i B48 2019 2022+Front Pipe + Mid Pipe + Valv Stainless Steel 304 Exhaust Remote Control Valvetronic Muffler Pipe Fi Exhaust Valvetronic Catback Exhaust System with Front and Mid X Pipe. Unleash the full character of your BMW 8 Series (G14 Convertible G15 Coupe G16 Gran Coupe) M850i with the Fi Exhaust Valvetronic System, a perfect blend of precision engineering, acoustic performance, and OEM functionality. This complete system includes the front pipe, mid X pipe, and valvetronic muffler, all designed to retain your vehicles factory valve operationno additional remote control required. The valves integrate seamlessly with BMWs drive modes, delivering a composed note in Comfort and a deep, aggressive tone in Sport. Expertly crafted from high grade T304 stainless steel, this system reduces backpressure, improves exhaust flow, and enhances turbo response from the N63 twin turbo V8. The X pipe configuration equalizes exhaust pulses for a smoother flow and rich, balanced sound across the rev range. Features: Includes front pipe, mid X pipe, and valvetronic muffler Retains OEM valve control no remote required High grade T304 stainless steel construction Mandrel bent tubing for optimal flow and durability X pipe design for improved exhaust balance and tone Noticeable performance and throttle response gains Direct bolt on fitment no cutting or welding Fitment: BMW G14 M850i Convertible (2019+) BMW G15 M850i Coupe (2019+) BMW G16 M850i Gran Coupe (2019+) Engine: 4. 4L Twin Turbocharged N63 V8