100% street legal

Our systems are 100% street legal and have a European Type Approval, as well as being CARB/EPA and TUV tested. Our products are a result of German engineering and Dutch craftsmanship. Our exhaust systems are fully compliant with the latest EURO norm. We care deeply about the environment, so all of our exhaust systems are built to achieve air quality standards.

Dr. Jekill & Mr. Hyde | The Exhaust is a completely street legal system and complies with European legislation and laws. 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% legal on the road in all riding modes. 

The smartbox; the electronic control unit in our exhaust systems is the brain of our product. Thanks to its ability to read canbus signals coming from the motorcycle’s ECU, the Smartbox makes sure you will not end up on the wrong side of the law, no matter what mode you select and will seamlessly intervene if necessary.

Developing a Dr. Jekill & Mr. Hyde | The Exhaust system is more than just putting on a muffler on a bike and go, but you probably already knew that. To determining the ultimate performance for a bike, our engineers make sure that the exhaust you have mounted on your bike is 100% legal.

But do not just take our word for it, ask the proper authorities. Before we release a system it gets thoroughly tested by them and only when they approve it, a Dr. Jekill & Mr. Hyde | The Exhaust becomes available for your bike.

dr. jekill & mr. hyde R&D

They are the people who develop the Dr. Jekill & Mr. Hyde exhaust systems and make sure they are 100% legal: the R&D team. The research and development team designs, develops and tests the exhaust systems. From the moment a bike rolls in, they have the first look and start working from there. All have their specialities, whether it is the performance of the exhaust or the programming of our smartbox. Their collective effort creates the Dr. Jekill & Mr. Hyde as you know it.

testing 1, 2, 3 Euro 4

What do the authorities test? To be 100% legal an exhaust system must meet the set requirements regarding emission, sound and performance. At this point the emission norm is EURO 4.

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.

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