Electronically adjustable exhaust system

Twenty-five years of innovation, state-of-the-art engineering and craftsmanship. Twenty-five years to create the ultimate exhaust. Our love of design, attention to detail and passion for riding all come together in Dr Jekill & Mr Hyde | The Exhaust. Our electronically adjustable exhaust system allows you to choose from three different sound modes while riding your bike.

By the push of a button. You can enjoy 3 sound modes that perfectly suit your mood with our electronically adjustable system, whether you are looking for a powerful rumble, a more subtle sound, or just very quiet. Dr. Jekill & Mr. Hyde's complies with European laws, JMCA and is ECE, EG-BE and TÜV approved. Discover our exhaust system for Harley- Davidson® motorbikes today and experience the freedom to customise your riding experience to your liking.

What all Harley-Davidson® riders have in common regardless of their age, gender or ethnicity is they are all freedom-loving, adventure-seeking individuals… who love esthetics and performance. Dr. Jekill & Mr. Hyde | The Exhaust gives you exactly that and completes the ultimate riding experience!

The Three Sounds

Dr. Jekill & Mr. Hyde's exhaust systems embody three distinct personalities*: the Dr. Jekill mode, the dynamic mode and the Mr. Hyde mode. By a simple push of a button a valve inside the muffler closes, opens or opens halfway, giving your exhaust more power and sound. You can choose per situation whether you want to ride in the Dr. Jekill mode, dynamic mode or Mr. Hyde mode. It’s up to you.

For more information, please check: How it sounds

European Engineering

The Exhaust is a result of German engineering and Dutch craftsmanship. With state of the art technology, perfectly crafted by the best engineers in town. With computer simulations, the building of prototypes and extensive testing, Dr. Jekill & Mr. Hyde has created a tailor made exhaust for each and every bike. By riders, for riders.

Street Legal

The Exhaust is a completely legal exhaust system that complies with European laws and is ECE, EG-BE and TÜV approved. The reason for this is that every Dr. Jekill & Mr. Hyde system contains a smartbox: this electronic control unit is the brain of the product and contains software that reads CANBUS signals coming from the motorcycle’s ECU.