the exhaust for

Harley-Davidson
CVO 121

IOur cutting-edge exhaust system, tailored for Harley-Davidson Touring CVO 121 models, is available in two striking finishes: Chrome and the captivating Dark Chrome, perfectly complementing original design elements.


Dr. Jekill & Mr. Hyde® Exhaust Systems for Harley-Davidson

Indulge in the extraordinary with our street-legal exhaust system, boasting electronic adjustability. Immerse yourself in the perfect blend of captivating sound, superior performance, and exceptional comfort, delivering an unmatched riding experience. With 3 sound modes, 4 year guarantee and a hard to beat price.

THE PERFECT FIT

Harley-Davidson and Dr. Jekill & Mr. Hyde® | The Exhaust

Embark on the ideal fusion of sound, performance, and design with The Exhaust for Harley-Davidson® motorcycles. The iconic American motorcycle brand and Dr. Jekill & Mr. Hyde® | The Exhaust seamlessly unite, creating an irresistible combination. And here's why...

What unites all Harley-Davidson riders, regardless of age, gender, or ethnicity, is a shared passion for freedom, a thirst for adventure, and an appreciation for both aesthetics and performance. Dr. Jekill & Mr. Hyde® | The Exhaust delivers precisely that, enhancing the ultimate riding experience!

Whether you're contemplating upgrading your motorcycle's exhaust to an electronically adjustable system or searching for the perfect legal exhaust for a brand-new Harley-Davidson motorcycle, explore our range of Dr. Jekill & Mr. Hyde® exhaust options and configurations using our dedicated exhaust configurator. Dr. Jekill & Mr. Hyde® ensures the finest sound quality and top-notch legality for a completely street-legal experience.

Customize your model, select your preferred color, endcap, and electronics, and craft your own distinctive exhaust. Let's create something truly beautiful!



THE ‘TWENTY-ONE’ - A UNIQUE 2 IN 1 ELECTRONICALLY
ADJUSTABLE EXHAUST

Dr. Jekill & Mr. Hyde® proudly introduces the 'Twenty-One,' a distinctive 2-in-1 electronically adjustable exhaust meticulously crafted for all Milwaukee-Eight Softail Models.*

This exhaust is the result of months of dedicated design, construction, and prototyping. Tailored for riders seeking to lift their Harley experience to new heights of performance and sound, the Twenty-One caters to the preferences of the clubstyle/performance scene, maintaining the hallmark features and innovations synonymous with Dr. Jekill & Mr. Hyde® exhaust systems.

Prepare yourself for an exhaust that not only delivers formidable performance but also produces a roar to match. The rugged and minimalist design of the Twenty-One makes it an essential addition to your Milwaukee-Eight Softail.

*Available for Street Bob // Fat Bob // Low Rider // Low Rider S // Breakout / Fat Boy // Heritage // Deluxe // Slim

Club Style Project 21 Banner

Raise your customization game with a focus on performance rather than just aesthetics. Dr. Jekill & Mr. Hyde® is diving into the Clubstyle/Performance scene!


SOUNDCHECK

USE YOUR HEADPHONES FOR THE ULTIMATE EXPERIENCE

Listen and enjoy the three different sound modes of the Dr. Jekill & Mr. Hyde® - The Exhaust.

Mr. Hyde

Mr. Hyde Mode - The exhaust boosts a beautiful, deep rumble.

Dynamic

Dynamic Mode - A tamed Mr. Hyde sound.

Dr. Jekill

Dr. Jekill Mode - A calm, low-key but distinctive sound.

Dr. Jekill & Mr. Hyde®'s sound engineers have meticulously crafted the sound of the exhaust, aligning it with the distinct character of your engine across all sound modes. We take immense pride in the result – a perfect harmony where the engine's power seamlessly translates into the captivating, rumbling sound emitted by the Dr. Jekill & Mr. Hyde® Exhaust.


Choose Your Model // Experience The Sound


Sportster S // Softail® // Grand American Touring // Sportster® // Trike // Dyna® // CVO™ // Pan America


ELECTRONICALLY ADJUSTABLE EXHAUST

ADJUST YOUR SOUND TO THE MOMENT

Dr. Jekill & Mr. Hyde® presents The Exhaust – an electronically adjustable exhaust system designed to deliver the ultimate riding experience for Sportster S, Softail®, Grand American Touring, Sportster®, Trike, Dyna®, CVO™, and Pan America models. Our exhaust system allows you to tailor your sound to the moment, providing street legality, exceptional performance, and premium quality.

The Exhaust, a product of German engineering and Dutch craftsmanship, is a street-legal masterpiece backed by a 4-year warranty. Dr. Jekill & Mr. Hyde®'s exhaust system empowers riders to choose between three dynamic sound modes on the go, ensuring every ride is nothing short of spectacular.

Crafted with cutting-edge technology and expertise, our exhaust is the result of extensive processes, including computer simulations, prototype building, and rigorous testing. Each exhaust is tailor-made for every bike, reflecting our commitment to delivering excellence – by riders, for riders.

Adjust your sound to the moment with three sound modes

Dr. Jekill & Mr. Hyde® systems are characterized by three distinct personalities: Dr. Jekill mode, Dynamic mode, and Mr. Hyde mode. With a simple push of a button, the valve inside the muffler can close, open, or open halfway, enhancing your exhaust's power and sound. This unique feature provides you with the flexibility to adjust your sound according to the moment.

For Blackbox systems designed for motorcycles without CAN bus, two sound modes are offered, providing riders with a tailored auditory experience. Choose Dr. Jekill & Mr. Hyde® for a personalized and dynamic ride.


HOW DOES IT WORK?

TECHNOLOGY

Dr. Jekill & Mr. Hyde® incorporates various electronic control units to guarantee optimal sound and unparalleled performance.

1. Modeswitch -The electronically controlled and adjustable system empowers riders to open and close the exhaust valve effortlessly using a handlebar-mounted button. This weather-resistant button, accompanied by a red light indicator, ensures convenient operation, enhancing your overall riding experience.

2. Smartbox - Serving as the brain of Dr. Jekill & Mr. Hyde® exhaust systems, the electronic control unit plays a crucial role. By interpreting CAN bus signals from the motorcycle's ECU, the Smartbox ensures that regardless of the mode you choose, you remain compliant with legal regulations, providing peace of mind.

3. Servomotors - Activating the modeswitch triggers the Smartbox to transmit a signal to the servomotors. These responsive components then adjust the valve to the desired mode. Employing a dual-cable operation, the servomotors seamlessly transition between the open Mr. Hyde mode, closed Dr. Jekill mode, or the 50% opened Dynamic mode. Designed with robust heavy-duty cables and a 100% waterproof seal, the servomotors ensure durable and reliable adjustments.

4. The Valve -In response to the servomotors, our patented valve system precisely adjusts to the required mode, delivering the desired sound mode you seek.


PREMIUM QUALITY

Riders often prioritize the appearance and sound of their exhaust, but the quality of the pipe itself is crucial for sustained peak performance. At Dr. Jekill & Mr. Hyde®, we take pride in ensuring the quality and durability of our Exhaust systems. Each exhaust is meticulously designed and manufactured with longevity in mind, subjected to thorough testing to withstand various extreme conditions and heat.

Our commitment to excellence is evident in the use of the highest quality materials, all carefully sourced from reputable suppliers in Europe. We make no compromises on quality, ensuring that every exhaust meets the highest standards before reaching production.


the exhaust

EXHAUST CONFIGURATOR



the exhaust

EXHAUST CONFIGURATOR

CONFIGURE THE EXHAUST

The Exhaust for
Harley-davidson

Personalize The Exhaust for your Harley-Davidson with our easy configurator. Choose your body color, endcap, and electronics to create the perfect custom exhaust. Let's build something beautiful together with just a few clicks.



THIS IS WHY

RIDERS LOVE US

“The unique powerful sound I was looking for”

@dnsrider | 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."