The Exhaust
For
Harley-Davidson

Dr. Jekill & Mr. Hyde® systems are premium exhaust systems built around advanced engineering, high quality materials, precise fitment, refined finishes, and electronically adjustable sound control.

Each system is developed specifically for the motorcycle and built with advanced components, including an electronically controlled valve system that gives you multiple sound modes at the push of a button.

The adjustable sound control also gives you something a permanently loud exhaust cannot, flexibility. You can fly under the radar when the situation calls for it, keep the sound controlled in neighborhoods and noise sensitive areas, help avoid expensive noise violation citations, and stay on your neighbors’ good side. When the time and place are right, you can switch to a deeper, more aggressive sound with the push of a button.

You are not just buying a muffler or another exhaust system. You are investing in premium engineering, advanced technology, model specific development, everyday flexibility, and a 4 year warranty.

In most cases, no tune is required. Dr. Jekill & Mr. Hyde exhaust systems are designed for clean Harley-Davidson fitment without requiring an ECU tune on stock applications.

If your motorcycle has additional performance modifications, such as intake or fueling changes, speak with your dealer about the best setup for your bike.

The three modes are Dr. Jekill, Dynamic, and Mr. Hyde. Each mode changes the valve position inside the exhaust to adjust the sound and tone.

Dr. Jekill is the controlled setting, Dynamic is the middle position, and Mr. Hyde is the fully open sound.

Use the exhaust configurator to select your year, model, finish, and exhaust style. You can also contact Jekill & Hyde USA with your exact model, engine, current exhaust setup, and any major modifications before ordering.

Some Harley-Davidson systems are available from our USA inventory. Other model-specific systems are custom ordered and built in Europe.

Current in-stock systems can be found in the in-stock Harley-Davidson collection, or you can contact us before ordering.

Most custom ordered systems take about 2 to 3 weeks for delivery, depending on production and shipping timing.

Yes. A mechanically inclined customer can install the system. If you are not mechanically inclined, we recommend having the system installed by your dealer.

Every Dr. Jekill & Mr. Hyde exhaust system is backed by a 4-year unlimited mileage warranty.

Manual control is available only for select Harley-Davidson models and configurations. Use the configurator to check availability for your exact year and model.