Our engineers 3D scan OEM parts to understand functionality and identify weaknesses, scrutinizing every angle of the exhaust to identify and rectify margins of error. Data is used to analyze factors such as the pipe diameter, route and degrees of the bending angles. During prototyping, we utilize our 3D simulation software that simulates the exhaust gas flow movement, thermal and pressure rise zone. Our engineering team extracts data to implement improvements in the exhaust design until they achieve optimal performance. This renders 100% OEM fitment on your vehicle!

Our patented Arc-Fluid Eddy Catalytic Technology comprises the Arc-Packaging method, creating a Vortex effect on turbine emissions. The Vortex effect purifies exhaust gases more effectively compared to alternative methods without sacrificing the back-pressure. With this, we achieve the goal of increasing (horse)power while remaining environmentally friendly. Furthermore, we select the choicest precious metals that enhance the ability to absorb harmful micro particles, producing an exhaust of optimal performance and engine efficiency with smoother, swifter flow.

Stone Valvetronic System forgoes conventional designs of complicated wiring and rubber inside the valve to ensure longevity. Install it by connecting it to your vehicle’s OBD-2 port. The remote control has three modes to open/close the valve: ON / OFF / AUTO. The Auto mode has a predefined RPM based on on-road tests, which allows you to customize when the valve opens or closes. We utilize genuine BMW motors and connectors which support extreme driving conditions. All our transmission components are designed through the CNC Process which ensure a sound system throughout.

Stone Exhaust employs the 7 axis CNC Bending Machine, the ultimate tool used in aerospace and defense industries for high precision, to surpass the industry’s standard of perfection to a stupendous 98% roundness. With Stone Exhaust’s attention to detail, we maintain the wear of the outer bore at only 25% at 180°. This state-of-the-art machine prevents airflow obstruction and welding fracture issues and supports the seamless construction of Stone Exhaust systems.