Rev Up Your BMW Experience with the Stone Exhaust B58 G20 G21 OEM Integrated Valved Catback Exhaust System

Rev Your Engine with the Stone Exhaust BMW B58 G20 G21 OEM Integrated Valved Catback Exhaust System Enrich both the sound and performance of your BMW with the Stone Exhaust BMW B58 G20 G21 OEM Integrated Valved Catback Exhaust System. Gear up for a truly superior driving experience outfitted for late models including the M440i, M440i xDrive, M340i & M340i xDrive. Forged by the experienced hands of Stone Exhaust since 1998, this exhaust system has been carefully engineered to offer precision fitment with a remarkable boost to your car's power. Utilizing in-house dynos for performance testing, this exhaust system has proven itself to enhance the prowess of your car while delivering the unique and exemplary Stone signature exhaust sound. The OEM Integrated Valves option allows the exhaust system to function as standard, leaving the regulation of the valves to the onboard computer (ECU). For those seeking a more personalized experience, the Cat-Back Valvetronic System comes equipped with a remote controller that puts the control of the exhaust valves in your hands, with a simple click of a button. Brilliantly designed, this system also offers auto mode where the valves open at a preset rpm automatically. The Stone Valvetronic system is seamless to install and effortlessly connects to your vehicle's OBDII port, getting you back on the road in mere minutes. Once equipped with the Stone Exhaust System, you may even consider adding the Stone Valvetronic System (Dual Valves) for even more freedom and control, letting you regulate the valves remotely. What truly makes the Stone Exhaust System stand out from the crowd are the advanced features it offers: OEM Integration, OPF Exhaust Design, a One-Piece Design showcasing superior machine welding, and an innovative in-house research and development process involving 3D scanning and reverse engineering. In addition to these, the system eliminates the drone often associated with standard exhaust systems, ensuring a smooth and enjoyable ride. The Stone Exhaust engineers have capitalized on cutting-edge technology like 3D scanning to accurately improve your exhaust system's efficiency. The data obtained goes into perfecting factors such as pipe diameter, routes, and bending angles. This exhaust system also overcomes any potential airflow obstruction and welding fracture problems by utilizing a state-of-the-art 7-axis CNC Bending Machine, delivering impressive 98% roundness and minimal wear and tear. The utilization of crisscross and overlapping welding techniques further ensures the endurance and performance of the product. Every Stone Exhaust System is compatible with the B58 Engine in late model BMW's like the 3 Series and 4 Series. The system part number is AP546A. Each system is manufactured by Stone Exhaust and includes a 2-year warranty. Engineers and motor enthusiasts alike will agree, the Stone Exhaust BMW B58 G20 G21 OEM Integrated Valved Catback Exhaust System offers supreme quality combined with amazing features, all aimed at taking your driving experience to new heights. Gear up and drive into the future with Stone Exhaust.