Vacuum Controller Exhaust Muffler Double with Remote Control 63 mm High Performance Electric Valve Exhaust T Pipe Valvetronic BMW Fi Exhaust G29 Z4 20i 2.0T B48 2019 +Front Pipe + Mid Pipe + Val High Performance 60mm Exhaust Electric Cutout Valve Valvetronic Muffler. 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