Frequently asked questions to Dr. Jekill & Mr. Hyde

asked questions

Frequently asked questions

Before sending us a great message please check out our frequently asked quesions secton below, hopefully we have a answer ready and otherwise we would love to see your message by using the contact form on the contact page.


What is a Dr. Jekill & Mr. Hyde system?

Dr. Jekill & Mr. Hyde | The Exhaust is an electronically adjustable exhaust system which makes it possible to choose between three different sound modes on the fly. An exhaust second to none with regards to performance, esthetics and power. Including 4 year warranty.

For which brands is a Dr. Jekill & Mr. Hyde system available?

The exhaust systems are available for the following brands: Harley-Davidson, Triumph, Indian, BMW and Victory. In our configurator you can check if there is an exhaust available for your specific model.

How does the system work?

Our system has a valve that you can control with the mode switch. With the switch you can choose between the different sound modes.

Where can I buy a Dr. Jekill & Mr. Hyde exhaust system?

You can buy a Dr. Jekill & Mr. Hyde exhaust system through our extensive dealer network. For more information on where you can buy a system: visit our dealer locator. If you cannot find a dealer near you, please contact The Jekill and Hyde Company at

Is it possible to buy an exhaust system for a motorcycle that is not yet in the product range of the Jekill and Hyde Company?

The Jekill and Hyde Company is continuously expanding her product range. If our exhaust systems are not yet available for your motorcycle brand and or model you can keep yourself up to date about our product developments by keeping yourself informed through our configurator or stay in the in the loop by subscribing to our newsletter here.

How many years of warranty do you get on a Dr. Jekill & Mr. Hyde system?

At Dr. Jekill & Mr. Hyde we take pride in the quality and durability of our products. Our exhausts are made to last, designed and manufactured with longevity in mind. Therefore we deliver all new exhaust systems with a standard 4 year warranty.

Is it necessary to tune my motorcycle when installing a Dr. Jekill & Mr. Hyde exhaust system?

We advise you to check at your local dealer what kind of options you have. In most cases it is not necessary but sometimes it is better for the overall riding experience. Exhaust, air intake and fuel are the 3 elements that are connected, if you change 2 out of 3 it's necessary to change the 3rd one as well. This check is highly recommend when other non-original parts are installed on the bike.

What is the difference between the Blackbox and Smartbox option?

The Smartbox 2 system is a Dr. Jekill & Mr. Hyde operating systems which fits only on CAN bus models for the following brands. Harley Davidson, Indian, BMW and KTM. The system has three modes: Dr. Jekill Mode, Dynamic Mode and Mr. Hyde Mode.

The Blackbox system is a Dr. Jekill & Mr. Hyde control system for Non CAN bus models which fits on Harley Davidson and Victory motorcycles. The Blackbox has two different modes: the Dr. Jekill mode and Mr. Hyde mode.

Can I install a Dr. Jekill & Mr. Hyde system myself?

We strive to maintain the high quality for the riders, therefor you can only buy our system at official dealers with certified mechanics who have been trained by The Jekill and Hyde Company. This way we can ensure the quality of the installation and the functioning of the exhaust.

Do the different end caps provide a different sound?

The sound of our system is for 90% created by the damper, so the end cap has a minimal influence on the actual sound of the exhaust system. An end cap can be easily exchanged for a different design.

How should I clean my exhaust?

Al our exhaust are made from stainless steel, this doesn’t mean you don’t have to treat the surface. It’s important to maintain your exhaust surface to keep it in a mint condition.

For chrome use first of all warm water to wash the sand off, after you can use chrome cleaner to clean and protect the chrome

For black and satin chrome use first of all warm water to wash the sand off, warm water with a clean soft towel.

Note: never clean the exhaust when it’s hot!

Do I have a Can-bus bike or not?

Can-bus is a way of communication on the bike Can (controlled area network) this make it possible to work with the modern features. From the outside it is not always possible to recognize if it is a Can-bus bike. When you go to our configurator and select your bike and model year it will automatically show you if it will work with or without Can-bus. After this, the possible(s) systems will appear.

Questions about header heat tape?

When you use tape on the headers it will protect the rider for extreme header temperatures, this heat will be guided down the pipe in to the exhaust. Since this can lead to extreme temperatures that could lead to failures in regard to the surface of the exhaust. Extraordinary heating is not our responsibility and thus taping your headers will terminate your warranty.  

Questions about warranty?

Please contact our warranty department at:

No questions available on this subject.