Concentric Mainshock - Harley-Davidson 2 into 2 Exhaust

$999.00



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  • Brand: gallop motorcycles
  • SKU: MAINSHOCK-RAW-NOHS-N/A

Unleash unparalleled power and sound with the Concentric Mainshock Exhaust. Designed for the audacious rider, its dual 3” conical outlets are engineered to produce a deep, thunderous rumble that resonates with the spirit of adventure. Perfect for Harley Davidson’s Twin Cam and M8 engines, this exhaust is not just an upgrade—it's a statement. Embrace the raw, rugged essence of the...

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Heat Shields Selection

Tags: 2 in 1 Exhausts for Dyna , 2 in 1 Exhausts for Harley-Davidson Touring , 2 in 1 Exhausts for Softail , Exhaust Systems for Fat Bob & Low Rider

Unleash unparalleled power and sound with the Concentric Mainshock Exhaust. Designed for the audacious rider, its dual 3” conical outlets are engineered to produce a deep, thunderous rumble that resonates with the spirit of adventure. Perfect for Harley Davidson’s Twin Cam and M8 engines, this exhaust is not just an upgrade—it's a statement.

Embrace the raw, rugged essence of the road with an exhaust that mirrors your bike's indomitable spirit. The Mainshock's raw metal aesthetic, reminiscent of a shotgun exhaust, is the epitome of untamed power. Its visual appeal is matched only by its sonic presence, ensuring you capture attention whether cruising highways or navigating city streets.

Distinctive Features:

  • Durability: Crafted from high-grade stainless steel, its all-SS construction and distinctive brushed finish, complete with Gallop Motorcycles’s signature raw welds, promise longevity and resilience against the elements.
  • Performance: The meticulous back purging process not only ensures durability but also enhances sound and power delivery, offering an unmatched riding experience.
  • Custom Fit: Tailored to complement your bike's lines and curves, this exhaust avoids unsightly kinks, ensuring a sleek, integrated look.
  • Financing: Through our partnership with Snap Finance, owning the Mainshock exhaust is more accessible than ever, with financing options for purchases up to $5,000 USD.

Experience the roar: Listen to the Mainshock’s distinctive sound in our exclusive sound clip.

*Exhaust system consists of 2 head pipes
*O2 Sensor bungs are located about 4"-6" from exhaust port.
*Floorboard spacer might be needed.
For some Dyna models it is possible that the oil dipstick is covered.
**Customizations can be made to the original design but might cause additional charges which will be discussed before the order is delivered.

FAQ

What are the different finishes you offer?

We offer three distinct finishes:

  • Raw: Brushed stainless steel texture with visible welds for a rugged, industrial look.
  • Polished: A shiny mirror finish that mimics chrome for a sleek and classic appearance.
  • Black Cerakote: A semi-matte ceramic coating designed to withstand extremely high temperatures, offering both durability and style.

How do the heat shields look?

Heat shields are custom-made for each system and match the finish of your exhaust. They’re designed to blend seamlessly and preserve the overall look of the pipes.

What does my order include?

Each order comes with:

  • A flange kit
  • Gaskets
  • Retaining springs

No additional mounting hardware is needed—our systems bolt directly to the engine. If required, custom brackets can be fabricated upon request.

How can I be sure the system will fit on my bike?

We perform a mock-up and test fitment on a bike similar to yours during production. This ensures your system has no clearance issues and will install properly when it arrives.

Do I need anything else to run my Gallop exhaust?

Yes, a tune is recommended to optimize performance and ensure your bike runs smoothly with the new exhaust.

Will the pipes have bungs for the O2 sensors?

Yes, we include O2 sensor bungs located about 3–6 inches from the exhaust port. We offer:

  • Narrow-band
  • Wide-band

If you're unsure, we can include both thread sizes to ensure compatibility.

How can I place an order?

You can place an order online, or by calling us at 866-4-GALLOP.

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