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.

*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.