CVO 121 Exhaust System
Electronically adjustable exhaust for Harley-Davidson CVO 121 Street Glide and Road Glide
CVO 121 Exhaust System
$2,995.00
Electronically Adjustable Exhaust Systems for Harley-Davidson CVO 121
The CVO 121 deserves an exhaust that respects the premium factory look while giving the Milwaukee-Eight 121 the sound and control it should have. This Dr. Jekill & Mr. Hyde system is built to match the chrome or scorched chrome finish, retain the original CVO end cap with a billet adapter, and deliver a louder, less restrictive U.S.-market sound with full electronic adjustability.
Keep The Look. Upgrade The Experience.
A CVO is not just another touring bike. It is Harley-Davidson's premium factory build, and every detail matters. That is why this system is designed to keep the CVO look intact instead of replacing it with a generic aftermarket style.
The billet adapter allows you to retain your original CVO end cap, so the exhaust continues to match the bike's factory design. Combined with chrome or scorched chrome finish options, the system gives you a clean factory-plus appearance.
At the same time, this system was developed with the U.S. rider in mind. It is louder and less restrictive than the European offering, while keeping the adjustability, technology, and premium build quality Dr. Jekill & Mr. Hyde has been known for three decades.
What This System Adds
1
CVO End Cap Retention
A billet adapter allows you to retain the original CVO end cap and preserve the look you paid for.
2
Factory-Matched Finish
Chrome and scorched chrome options help the system match the factory CVO styling.
3
U.S.-Market Sound
Louder and less restrictive than the European offering, built for riders who want more presence from the 121.
4
Jekill Sound Control
Switch between Dr. Jekill, Dynamic, and Mr. Hyde modes for quiet comfort or a stronger touring sound.
Available For:
Harley-Davidson® CVO 121 Street Glide® // CVO 121 Road Glide®
The Valve
The Three Sound Modes
In Dr. Jekill mode, the valve closes to keep your CVO 121 refined and controlled. It is the right setting for early starts, neighborhoods, long highway miles, and moments when you want the bike to stay comfortable without losing its premium character.
CVO End Cap Retention
Keep The End Cap You Paid For
The CVO 121 comes with a premium factory end cap, and replacing it with a generic aftermarket tip takes away from the look of the bike. Our system uses a machined billet aluminum adapter that allows you to retain the original CVO end cap while adding Dr. Jekill & Mr. Hyde adjustable exhaust technology.
1
Retains The CVO End Cap
Keep the factory CVO end cap instead of replacing it with a generic aftermarket exhaust tip.
2
Billet Aluminum Adapter
A machined billet adapter makes the factory end cap work with the Jekill & Hyde system.
3
1-To-1 Finish Match
Designed to match the CVO scorched chrome look so the system feels like it belongs on the bike.
4
Premium Jekill Technology
Keep the factory CVO style while adding three-mode electronic sound control and premium build quality.
Scorched Chrome Match
Built To Match The CVO Finish
The CVO 121 finish is one of the details that makes the bike special. Our scorched chrome option is designed as a 1-to-1 match, so the exhaust upgrade keeps the same premium factory appearance.
Instead of forcing your CVO into a generic aftermarket look, this system is built to blend with the motorcycle. The finish, billet adapter, and retained factory end cap work together so you get Dr. Jekill & Mr. Hyde adjustable exhaust technology without losing the CVO style you paid for.
Harley-Davidson CVO 121 Sound Control
Street Glide & Road Glide
Push The
Button
Push 1x For
Dr. Jekill Mode
Dr. Jekill Mode
Push 1x For
Mr. Hyde Mode
Mr. Hyde Mode
Push 2x For
Dynamic Mode
Dynamic Mode
In-Stock CVO 121 Exhaust
Choose Your CVO 121 System
Installation Support
CVO 121 Installation Video
Review the Dr. Jekill & Mr. Hyde installation video before fitting your Harley-Davidson CVO 121 exhaust system.
A CVO motorcycle is not shown in this video, but the CVO 121 system installs the same way. Wiring routing, component placement, and the installation flow are identical.
View Installation VideosWhy Sound Control Matters
Built For Long Miles, Big Sound, And Full Control
A CVO 121 Street Glide or Road Glide is built for premium touring, strong Milwaukee-Eight power, and a factory look worth preserving. The Dr. Jekill & Mr. Hyde system gives you the sound to match the bike, without forcing you to live with full exhaust volume every mile of the ride.
1
Long-Distance Comfort
Keep the sound refined on long highway stretches so the exhaust does not become tiring during big-mile touring days.
2
Passenger Comfort
Your passenger sits directly in the sound path, so adjustable volume helps make two-up riding more comfortable.
3
Quiet Places
Turn it down when leaving early, coming home late, checking into hotels, or rolling through quiet neighborhoods.
4
Open It Up
Switch to Mr. Hyde mode when you want the CVO 121 to have the deeper, stronger presence it deserves.
Electronically Adjustable Exhaust Systems for Harley-Davidson CVO 121
The CVO 121 deserves an exhaust that respects the premium factory look while giving the Milwaukee-Eight 121 the sound and control it should have. This Dr. Jekill & Mr. Hyde system for the CVO 121 Street Glide and Road Glide is built to match the chrome or scorched chrome finish, retain the original CVO end cap with a billet adapter, and deliver a louder, less restrictive U.S.-market sound with full electronic adjustability.
Keep The Look. Upgrade The Experience.
A CVO is not just another touring bike. It is Harley-Davidson's premium factory build, and every detail matters. That is why this system is designed to keep the CVO look intact instead of replacing it with a generic aftermarket style.
The billet adapter allows you to retain your original CVO end cap, so the exhaust continues to match the bike's factory design. Combined with chrome or scorched chrome finish options, the system gives you a clean factory-plus appearance.
At the same time, this system was developed with the U.S. rider in mind. It is louder and less restrictive than the European offering, while keeping the adjustability, technology, and premium build quality that has defined Dr. Jekill & Mr. Hyde for three decades.
What This System Adds
1
CVO End Cap Retention
A billet adapter allows you to retain the original CVO end cap and preserve the look you paid for.
2
Factory-Matched Finish
Chrome and scorched chrome options help the system match the factory CVO styling.
3
U.S.-Market Sound
Louder and less restrictive than the European offering, built for riders who want more presence from the 121.
4
Jekill Sound Control
Switch between Dr. Jekill, Dynamic, and Mr. Hyde modes for quiet comfort or a stronger touring sound.
Available For:
Harley-Davidson® CVO 121 Street Glide and Road Glide models. Built for riders who want to retain the CVO end cap and factory-style finish while adding Dr. Jekill & Mr. Hyde adjustable exhaust technology, premium construction, and a louder U.S.-market sound.
