Adjustable Exhaust For Triumph Motorcycles Bonneville Bobber
Adjustable exhaust systems for the Triumph Bonneville Bobber, built to complement its stripped-back style with premium sound you control.
The Exhaust For Triumph Motorcycles
Complete your ultimate riding experience with Dr. Jekill & Mr. Hyde | The Exhaust. Electronically adjustable. Up to 3 sound modes.
Electronically Adjustable Exhaust Systems For Triumph Motorcycles
Ride Classic. Sound Legendary.
Dr. Jekill & Mr. Hyde builds premium electronically adjustable exhaust systems for Triumph motorcycles. Choose between three sound modes at the push of a button and enjoy a tailored combination of classic style, sophisticated sound, premium quality, and control for every riding situation.
Available for select Triumph models, including: Speed Twin // Bonneville Bobber // Speedmaster // Bonneville T120 // Thruxton
Configure Your Exhaust
The Valve
The Three Sound Modes
In Dr. Jekill mode, the valve closes to keep your Triumph smooth, controlled, and refined. It is ideal for cold morning starts, quiet neighborhoods, late arrivals, and any ride where you want a more discreet exhaust note.
Electronic Sound Control
Control Your Sound From The Handlebars
The ModeSwitch puts Dr. Jekill, Dynamic, and Mr. Hyde modes under your thumb while you ride your Triumph.
- Simple operation: switch modes on the move with the compact control mounted on your handlebar.
- Smart valve control: the Smartbox and servo motor control the valve position inside the muffler.
- Built for the ride: refined through town and unmistakable when the road opens up.
Electronically Adjustable Exhaust Systems
Triumph Sound Checks
Select your Triumph model and hear the difference between Dr. Jekill, Dynamic, and Mr. Hyde.
Triumph Sound Check
Listen To The Bonneville Bobber
Headphones or a good speaker recommended.
- Dr. Jekill A smooth, controlled exhaust note for quieter starts and relaxed riding.
- Dynamic A deeper, fuller tone that brings more character to the Bobber.
- Mr. Hyde The boldest setting, delivering the Bobber’s deepest and most powerful sound.
Two Ways To Order
Option 1, Fastest
In Stock & Ready To Ship
Shop the Triumph exhaust systems currently on our shelf. These systems are ready to ship without waiting for a custom build.
Shop In Stock ModelsOption 2, Complete Range
Configure Your Exact Build
Explore the complete Triumph offering. Select your model, exhaust style, finish, end cap, and available options to build the exact system for your motorcycle.
Open The ConfiguratorReady To Ship
In Stock Triumph Systems
Triumph Bonneville Bobber & Speedmaster Exhaust
Triumph Bonneville Bobber & Speedmaster Exhaust (2017–2024)
View Details
Triumph Bonneville Bobber & Speedmaster Exhaust
Triumph Bonneville Bobber & Speedmaster Exhaust (2025+)
View Details
Triumph Speed Twin Exhaust
Triumph Speed Twin Exhaust (2019–2024)
View Details
Triumph Bonneville T120 Exhaust
Triumph Bonneville T120 Exhaust (2021–2024)
View DetailsBuilt For Confidence
Premium Built. USA Supported.
Every Dr. Jekill & Mr. Hyde system is engineered in Europe, handcrafted in the Netherlands, and backed here at home by Jekill & Hyde USA in North Carolina.
01
European Engineered
Model-specific fitment, electronic valve control, and premium exhaust design developed for Triumph motorcycles.
02
Handcrafted In The Netherlands
Final assembly takes place in the Netherlands using premium components and strict quality control on every system.
03
4 Year Warranty
Every system carries a 4-year unlimited-mileage warranty, giving you confidence every time you ride.
04
USA Support
Direct support for riders, dealers, and installers across North America from our North Carolina headquarters.
Frequently Asked Questions
Triumph Exhaust FAQ
Quick answers to help you choose the right Dr. Jekill & Mr. Hyde adjustable exhaust system for your Triumph.
Dr. Jekill & Mr. Hyde® systems are premium exhausts built around model-specific engineering, high-quality materials, precise fitment, refined finishes, and electronically adjustable sound control.
Each system is developed for a specific motorcycle and uses a controlled valve inside the exhaust to change the sound at the push of a button.
That flexibility is something a permanently loud exhaust cannot provide. Keep the bike controlled through neighborhoods and noise-sensitive areas, then open the system when the time and place are right.
You are not simply buying a muffler. You are investing in model-specific development, adjustable valve technology, premium construction, everyday flexibility, and a four-year warranty.
In most cases, no tune is required. These systems are developed to work with the motorcycle’s factory fueling.
If your motorcycle already has other performance modifications, such as an aftermarket intake, header, or fueling changes, speak with your dealer about the proper setup before ordering.
Electronic systems provide three distinct settings: Dr. Jekill, Dynamic, and Mr. Hyde.
Dr. Jekill is the controlled setting, Dynamic provides a deeper tone for everyday riding, and Mr. Hyde opens the valve for the fullest available exhaust sound.
Available control options can vary by motorcycle and system. The exhaust configurator will show the correct setup for your specific Triumph.
Use the exhaust configurator to select your year, model, exhaust style, finish, end cap, and available control options.
You can also contact Jekill & Hyde USA with your exact model, model year, current exhaust setup, and any major modifications before ordering.
Some Triumph systems are stocked in our USA inventory and can ship immediately. Other model-specific configurations are built to order in Europe.
See what is currently available in the in-stock Triumph collection , or contact us before ordering.
Built-to-order systems typically take approximately two to four weeks for delivery, depending on production and shipping timing. Systems already in our USA inventory are ready to ship.
Many experienced owners can install the system using standard hand tools. The electrical components are designed for plug-and-play installation without cutting or splicing the motorcycle’s wiring.
Professional installation is recommended when you are not comfortable removing exhaust components or routing electrical connections.
Every Dr. Jekill & Mr. Hyde exhaust system carries a four-year unlimited-mileage warranty.
Still Need Help?
Let Us Confirm Fitment Before You Order
Send us your model year, exact Triumph model, current exhaust setup, and any major modifications. We will help identify the correct system for your motorcycle.
