Harley-Davidson® Electronically Adjustable Exhaust

the exhaust for Harley-Davidson

Nightster

Nightster

Light up the night with the LUX exhaust system for Nightster and configure now! Behold the sleek and seamless design of the LUX exhaust, an extension of the Harley-Davidson Nightster's raw and rebellious style. With its seamless integration, the LUX appears as though it was always a part of the bike, born to ride alongside it. 

Sportster S™

Sportster S™

Dr. Jekill & Mr. Hyde proudly presents the ‘APEX’, the must-have for the Harley-Davidson Sportster S™. The raw 2in1 exhaust system perfectly fits the new Sportster S: clean, made for racing and a sound like you have never heard before.

Softail®

Softail®

Raw but still comfortable. The ultimate ride. A timeless classic that offers something for each and every biker.

Touring

Touring

For those with an appetite for adventure. Start your engine and ride wherever you want. Customize this timeless classic with a modern day exhaust, check out Dr. Jekill & Mr. Hyde.

Sportster®

Sportster®

Stay close to the road with ‘spot on’ performance. The Sportster is one of the smaller Harleys but should never be underestimated. Time to twist the throttle.

Dyna®

Dyna®

Burn asphalt with the best exhaust ever created. Start, Rev and go! The Dyna has an almost cult-like following, but what do you expect with a bike like this?

VRSC

VRSC

Muscles and unlimited power. Nothing beats this beast on the road. Watch your fellow riders in the read view mirror as you unleash Mr. Hyde.

CVO™

CVO™

For the rider who wants it all. A CVO™ gives you the ride of your life. Once you ride a CVO, you do not want anything else, ever.

Trike

Trike

Three wheels. No compromise. A comfortable ride with the undeniable H-D attitude. Time to claim your place on the road.

Pan America

Pan America

The ultimate, street legal, electronically adjustable exhaust that gives you the ultimate combination of sound, performance and comfort, pushing the super-smooth Revolution Max 1250 engine of the Pan America to the limits. 

Adjust your sound to the momentHarley-Davidson and Dr. Jekill & Mr. Hyde | The Exhaust - The perfect match

This is it. Sound, performance and design all come together in The Exhaust for Harley-Davidson®. The definitive American motorcycle brand and Dr. Jekill & Mr. Hyde | The Exhaust are becoming an inseparable combination. With good reason...

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!

Are you considering replacing your Harley-Davidson® exhaust for an electronically adjustable exhaust system? Or are you looking for a brand new Harley-Davidson® motorcycle and are you looking for a suitable legal exhaust for it? View all our options and combinations in our special exhaust configurator. We offer the best sound, best performance, premium quality with 4 year warranty and completely street legal.

Choose your model, color, endcap and electronics and design your own unique exhaust. Let's build something beautiful!

3 sound modes, street legalElectronically adjustable exhaust for Harley-Davidson

The Jekill and Hyde Company gives motorcyclists the ultimate riding experience with The Exhaust. Our electronically adjustable exhaust system gives you the possibility to adjust your sound to the moment and offers street legality, excellent performance and premium quality.

Dr. Jekill & Mr. Hyde | The Exhaust offers a completely street legal, premium quality exhaust with 4 years warranty. Our exhaust system makes it possible to choose between three different sound modes on the fly, which makes every ride spectacular!

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, we’ve created a tailor made exhaust for each and every bike. By riders, for riders.

exhaust-system-harley-davidson-jekill-and-hyde
  • Dr. Jekill mode
  • Dynamic mode
  • Mr. Hyde mode

adjust your sound to the moment three sound modes

Dr. Jekill & Mr. Hyde 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. This gives you all the tools to adjust your sound to the moment. Our software is programmed to intervene subtly and almost imperceptibly when the parameters set by the legislation are reached. This ensures that you are street legal in all riding modes.

 

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USE YOUR HEADPHONES
FOR THE ULTIMATE EXPERIENCE

start how it sounds

push the button

Push 1x for 
Dr. Jekill mode

Dr. jekill mode
Enabled

Push 1x for 
Mr. hyde mode

Mr. hyde mode
Enabled

Push 2x for 
dynamic mode

Dynamic mode
Enabled

turn off your bike
street-legal-exhaust-jekill-and-hyde

European type approval street legal

Dr. Jekill & Mr. Hyde | 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.

 

More info

You are Dr. Jekill & Mr. Hyde

Live from
the road

We are happy that our customers love their Dr. Jekill and Mr. Hyde | The Exhaust. And they're proud to show it!

enjoy the ultimate rideThe Exhaust

The Jekill and Hyde Company gives motorcyclists the ultimate riding experience with The Exhaust: an electronically adjustable exhaust system which makes it possible to choose between three different sound modes on the fly.

  • Our products have a EU type approval and are EC/ ECE/EG/ABE/EEC/EU/ECE/EGBE and TÜV tested, thus being 100% street legal.
  • German engineering and Dutch craftsmanship.
  • Three street legal personalities with 100% power, performance and emission.
  • Four years warranty.

Configure
the exhaust

Customize your own Dr. Jekill & Mr. Hyde | The Exhaust.
Let’s build something beautiful.

this is why
H-D Riders love us

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"No comparison to the original sound."
Andrej  |   Harley-Davidson Sportster

"Just awesome, no comparison to the original sound. I would never go without a Jekill again."

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"Keeps the peace in my home."  
Jack Panitch  |   Street Bob

"This exhaust system is everything the manufacturer says it is. Keeps the peace in my home and neighborhood and gives the perfect sound."

 

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"Roaring sound and pure performance!"
Walter Wais  |   Harley-Davidson Sportster

"Dr. Jekill & Mr. Hyde is the best investment in my bike so far!!! It adds 100% more driving fun. I can adjust the volume according to my needs, and at the push of a button a roaring sound and pure performance. And the best of all it's street legal. Many thanks to the Dr. Jekill & Mr. Hyde Team - great job keep it up!"

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"I can't get the grin off my face anymore!"
Stefan Senkfell  |   Harley-Davidson Fat Boy

"The best decision I've ever made to have this mega exhaust fitted! There is simply NOTHING BETTER !!! Should be standard on every Harley - I can't get the grin off my face anymore!"

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"I feel like I'm the king of the streets."
@mawi_davidson  |   Harley-Davidson Sportster Forty-Eight

"When I ride with my motorcycle I feel free. And when I ride with my Dr. Jekill & Mr. Hyde exhaust I feel like I'm the king of the streets. And when everybody looks at me and give me a thumbs up I know I made the right decision choosing this exhaust system."

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"Goosebumps guaranteed!"
Christopher Falk  |   Sportster

"Incredibly beautiful sound! Goosebumps guaranteed, even when you start the second/third/fourth time!"

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"Legal with perfect sound."
Sascha Koerner  |   Harley-Davidson Fat Boy

"Just WOW! I've had a motorcycle license since I was 18, but I've never bought a bike. My dream was to buy myself a Harley by the age of 40, but it didn't quite work out. But shortly before my 41st I did. The Dr. Jekill & Mr. Hyde system simply rounds it off, it is pure riding pleasure when you are out and about in Mr. Hyde mode. That's how a Harley has to breathe. Just yesterday, I rode to a gas station, and when I came out again, my bike was being inspected by another Harley rider. I just said, can I help? His answer: just wanted to see what you're riding, it sounds mega, I got to have it. I can just say thank you! Legal with perfect sound."

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"Choose your own style."
@marc_stone82  |   Harley-Davidson Sportster Forty-Eight

"If you are looking for a high quality and exactly finished exhaust system which can be modified to your own style you have to choose Dr. Jekill & Mr. Hyde! On top you also get the possibility to change your sound levels easily by a push of a button."

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"Don't hesitate any longer and get a Dr. Jekill & Mr. Hyde exhaust!"  
Philipp  |   Street Bob

"Simply awesome!!! The unique sound makes every kilometre in the saddle a (sound) experience and hey, each of us only has 1 life, so I can only say to anyone who is still thinking: don't hesitate any longer and get a Dr. Jekill & Mr. Hyde exhaust immediately and you will enjoy every second on your bike even more, I promise!"

 

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"Perfect finish and street legal."
Martin Brunner  |   Harley-Davidson Fat Boy

"Very good exhaust system - perfect finish and street legal. And Smartbox 2 is awesome!"

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"Legal, but still a beautiful deep Harley sound."
Harley Dutchies  |   Harley-Davidson Sportster

"I got to know Dr. Jekill & Mr. Hyde at a motorcycle fair. I was impressed by this exhaust system from the first moment. But after a test drive I was sold. Wonderful to drive being able to play with the sound. The fact that it is legal, but still gives a beautiful deep Harley sound was the deciding factor in choosing Dr. Jekill & Mr. Hyde and they are also beautiful under my bike, also not unimportant. My bike passed the strict RDW inspection and I can confidently cross the (German) border without worrying. "

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"I am a person with emotion - the sound of the motorcycle has to be top notch."
Frank Schelper  |   Harley-Davidson Breakout

"I've hesitated for a long time to buy a Dr. Jekill & Mr. Hyde exhaust system. This year I finally got the heart to configure and order the exhaust system according to my wishes. After the exhaust system was mounted on my Harley-Davidson Breakout and I picked up the machine, and I was fascinated by the sound after the first 5 km. I haven't regretted my decision since. It's also a wonderful feeling not to be out on the road with an illegal exhaust system anymore. I will continue to enjoy the sound in my ears every mile. This is another reason for me never to buy an electric motorcycle, athough I am convinced that electric motorcycles also have a certain charm. But unfortunately I am a person with emotion - the sound of the motorcycle has to be top notch."

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"What a fantastic sound."  
Joost Westhof  |   Low Rider S

"What a fantastic sound is now coming from my Harley Davidson Low Rider S. I can't wait for the riding season to start again so I can test the system properly and enjoy the beautiful sound and performance."

 

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"Dr. Jekill & Mr. Hyde makes the hair on the neck stand up."
Sportster Forty-Eight Icon  |   Harley-Davidson Sportster

"When I bought a Harley Davidson Sportster Forty-Eight, it quickly became clear to me that I had to replace the exhaust system. Of course, only one exhaust system was an option for me. The quality, optics and of course the sound of the Dr. Jekill & Mr. Hyde is simply unique on the market and all of this is still 100% legal. I would also like to highlight the great selection of end caps at this point, which allow each customer to customize. The change from the original system to the Dr. Jekill & Mr. Hyde exhaust system, transformed my Harley's sound from a lawnmower into a black beast. As soon as the infamous button is pressed, the hair on the neck stands up. Emotions and moments of happiness that Dr. Jekill & Mr. Hyde gives every motorcycle rider with their products. "

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"It was worth it."
Christopher  |  

"I am very satisfied. Great look, mega sound and still legal. It was worth it."

 

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"The sound is really perfect!"
Stefan S  |   Harley-Davidson Fat Bob

"I have installed my second J&H system, first on my HD Custom and since 2018 on my HD FatBob BJ 2018. What can I say, the sound is really perfect, not too loud, but also not too quiet, a bass tone, that fits the bike perfectly. I also looked and listened to other manufacturers, but then decided in favor of J&H. The advice and after sales service at J&H is great and I personally recommend all my biker friends to buy from you! The BEST! "

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"For me, no other system was ever considered."  
  |   Street Bob

"The perfect finish when it comes to design. For me, no other system was ever considered. EURO 5 and the push on the button lets us know why we ride Harley."

 

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"An experience for my ears and soul!"
Andreas "Harley-Sportster-Lifestyle"  |   Harley-Davidson Sportster

"It's just awesome I can ride my bike to work at 5 a.m., without getting into trouble with the neighbors! But when I'm on the open road, press the button on the handlebars and the valve in the muffler opens, the show begins! The best sound you can imagine, bassy, muffled, every meter I ride becomes an experience for my ears and soul! Without worrying about a traffic control! I can only recommend: get a system, it is worth every penny."

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"Legal and loud!"  
Dennis  |  

"Very very good sound, legal and loud. Neighbours are left alone and it screams out on the street."

 

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"100% legal and yet the full Harley sound."
@strandfahrer  |   Harley-Davidson Street Bob

"So, What I particularly like about the Dr. Jekill & Mr. Hyde exhaust is the deep sound, the quality and that the valve is inside the silencer. I also think it's great that you can change the look of the exhaust afterwards by replacing the end caps. 100% legal and yet the full Harley sound is absolutely great, especially in Germany."

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"This is the best upgrade you can do on your bike."
Gerco Goote  |   Road King Special

" Today was my first ride on my Road King Special with the J&H exhaust. What a revelation. It felt like a brake had come off the bike and the sound is magnificent. This is the best upgrade you can do on your bike. My bike is Euro 5 and there it still works. The sound of the Mr. Hyde mode is warm and dark. The looks are also great. This exhaust is just what you need on your bike."

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"When so many beautiful things happen to you, that's worth 5 stars plus..."
Christian Sharkey Scherkenbach  |   Heritage

"When the sound hits you in the stomach, the ground trembles under your feet and a broad grin adorns your face, then for the first time you have pressed the button on your new Dr. Jekill & Mr Hyde exhaust system. When so many beautiful things happen to you, that's worth 5 stars plus..."

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"The unique powerful sound I was looking for."
@dysnrider  |   Harley-Davidson Sportster

"Dr. Jekill & Mr. Hyde offers the unique powerful Harley sound I was looking for. Which is more bassy, but still civil enough for daily rides. Even the possibility of adjusting the valves with just a push of a button is very comfortable on longer tours. You get something for the price and it's worth it."

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"Thank you for this simply ingenious exhaust system."
André (@Bluebobber48)  |   Harley-Davidson Sportster

"I will never forget the moment when my 48 was brought home to me and I pressed the button for the first time. There was an incomparable, bassy sound, as it should be for a Harley. An absolute dream for every Harley rider. For me it is optically and technically by far the best system on the market and I would buy it again 100%. The look is perfect and the riding pleasure is absolutely unique. Thank you for this simply ingenious exhaust system."

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"A must-have on your bike!"
Thomas Peerlinck  |   Harley-Davidson Streetbob

"I have my Dr. Jekill & Mr. Hyde exhaust for one year now, 6.500 km on the 2019 Street Bob 107ci stage I with S&S teardrop intake... and VERY HAPPY! Amazing sound, deep, dark and loud, but quiet when necessary (neighbours, city center, horses or small kids around...) all this legal with certificate. This head-turing piece of art is a must-have on your bike!!"

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"There's a night mode for those who come home late at night ;-)"
Martin Wyss  |   Breakout

"I've never regretted the decision to go with the Dr. Jekill & Mr. Hyde system and I look forward to every trip with the beautiful, deep and powerful sound. There's a night mode for those who come home late at night ;-) "

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"This is exactly what a Harley-Davidson should sound like!"
Alessandro Silverfox  |   Harley-Davidson Sportster Iron 1200

"From my point of view the best sound by far. This is exactly what a Harley-Davidson should sound like, nice and bassy. The Dr. Jekill & Mr. Hyde increases the driving pleasure by 100% and if you want to be a little gentler on the road, you always have the option to choose between the 3 levels. In addition, the quality and service are unbeatable, in my opinion the BEST system on the market. I don't want to be without them on any machine and would recommend them anytime."

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the exhaust for harley-davidson

Your perfect exhaust is only a few clicks away. Pick your body colour, end cap and electronics, and make it yours. Let’s build something beautiful.