What do the authorities test? To be 100% legal an exhaust system must meet the set requirements regarding emission, sound and performance.
The specially developed catalysts in our mufflers make sure that this requirement is met. Then there is performance. A Dr. Jekill & Mr. Hyde | The Exhaust gives you up to 5% more performance while riding with your valve opened*. This is also the legal which ensures that when the valve gets closed to loss of performance barely noticeable, ensuring you a safe ride. Next up is sound.
Finally there is sound. Our software is programmed to intervene subtly and almost imperceptibly when the parameters set by the legislation are reached. This ensures that you are 100% legally on the road in all riding modes. The system comes with a credit-card sized certificate that has your unique exhaust number on it, and states that the system is fully street legal.
*After a tuning this percentage might vary.