Light Up The Night
Electronically Adjustable Exhaust For Harley-Davidson Nightster: The LUX
The Harley-Davidson Nightster brings modern Sportster attitude to a lighter, sharper platform powered by the Revolution Max 975T engine. The Dr. Jekill & Mr. Hyde LUX gives it premium sound control with three selectable modes.
The Nightster is compact, quick, and built for riders who want a motorcycle that feels responsive every time they roll on the throttle. A basic exhaust can change the sound, but the LUX gives you more than volume.
Ride quiet through neighborhoods, keep it clean for everyday miles, or open the valve when you want the Revolution Max engine to show more character.
Dr. Jekill & Mr. Hyde electronic valve technology lets you adjust the sound on the fly. One premium exhaust system, three distinct personalities, and full control from the handlebar.
Configure And Order The LUX
The Valve
The Three Sound Modes
In Dr. Jekill mode, the valve closes to keep your Nightster smooth, controlled, and easy to live with. It is the right setting for early starts, quiet neighborhoods, late arrivals, and any ride where you want the bike to stay respectful.
Nightster LUX Exhaust
Built Tight For The Nightster
The LUX gives the Harley-Davidson Nightster a clean 2-in-1 look, premium electronic valve control, and the sound flexibility Dr. Jekill & Mr. Hyde is known for.
Nightster Sound Control
Change The Sound Without Changing The Ride
The LUX gives your Harley-Davidson Nightster three distinct sound modes from one electronically adjustable exhaust system. Ride refined when you need it quiet, open it up when you want more character, and keep full control at your fingertips.
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Dr. Jekill Mode
A quieter, controlled sound for early starts, neighborhoods, longer rides, and respectful cruising.
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Dynamic Mode
A balanced everyday setting with more tone and personality without going fully open.
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Mr. Hyde Mode
The open, aggressive sound mode for when you want the Revolution Max engine to have a stronger voice.
Installation Support
Nightster Installation Video
Watch the Dr. Jekill & Mr. Hyde installation video before fitting your Harley-Davidson Nightster exhaust system. Review the main components and installation flow for The Exhaust.
- Review all parts before installation
- Follow the supplied installation guide
Why Jekill & Hyde
Four Reasons The LUX Makes Sense
The Nightster is compact, quick, and built for riders who want a motorcycle that feels responsive every time they roll on the throttle. The LUX keeps that sharp 2-in-1 look while adding Dr. Jekill & Mr. Hyde electronic valve control, premium build quality, and three selectable sound modes from one system.
Sound Control
Ride quiet when the moment calls for it, open it up when you want more character, and switch modes from the handlebar.
Model-Specific Fit
The LUX was designed and built around the Nightster platform from the start. This is not a universal muffler made to fit.
Premium Build
More than a muffler swap: the LUX combines the exhaust body, valve technology, electronics, and finished details into one complete setup.
Everyday Flexibility
Use Dr. Jekill mode for neighborhoods and early starts, Dynamic for normal riding, and Mr. Hyde mode when you want the Revolution Max to speak up.
Nightster FAQ
Questions Before You Order?
Here are the most common questions about the Dr. Jekill & Mr. Hyde LUX electronically adjustable exhaust system for Harley-Davidson Nightster models.
It depends on how your motorcycle is currently set up. Our exhaust systems are designed around the stock ECM parameters of the motorcycle and do not require a tune when installed on a stock bike.
If you currently have additional performance products installed, such as engine work, intake changes, or other performance upgrades, we recommend asking your motorcycle mechanic or shop. You can also contact us and we will help point you in the right direction.
Yes. You can change the valve position and ride in any mode at any point in time. The Modeswitch lets you move between Dr. Jekill, Dynamic, and Mr. Hyde mode while riding.
It depends on where you ride. This system is street legal in many markets and is designed around the stock ECM parameters of the motorcycle. Local rules can vary, so we recommend checking your local laws and contacting us if you have any questions.
Please refer to the Nightster installation video online or the supplied paper instructions that come in the kit.
Installation usually takes around 45 minutes to 1 hour, depending on tools, mechanical ability, and shop experience. You can watch the installation video here: Nightster LUX installation video.
You are paying for extensive R&D, premium build quality, and the adjustability Dr. Jekill & Mr. Hyde is known for. This is much more than a tube and baffle. It is an electronically adjustable exhaust system with valve technology, model-specific engineering, premium materials, and the ability to choose how your motorcycle sounds.
There is no other motorcycle exhaust company that compares to the level of sound control and integration Dr. Jekill & Mr. Hyde delivers.
Everything needed for installation, except tools and time, comes inside the box. Your system includes the exhaust components, electronics, wiring, hardware, and supplied installation instructions for the motorcycle-specific kit.
