Special Offers
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Thunderheader™ Dyna Megaphone Exhaust Design - Chrome (99' - 06')
The 1026 Model Fits 1999 – 2006 Dynas. Features 1 3/4″ head pipes to our patented megaphone muffler design. No O2 Sensor Ports. Includes a transmission bracket, clamp, and all hardware to mount the exhaust. Heat...Regular price From $1,079.00Regular price From $1,079.00 -
Thunderheader™ Dyna Megaphone Exhaust Design Dyna - Chrome (93' - 98')
The 1022 Model Fits Dynas with center and forward controls, years 1993 – 1998. Features 1 3/4″ head pipes to our patented megaphone muffler design. No O2 Sensor Ports. Includes a transmission bracket, clamp, rubber mount,...Regular price From $1,109.00Regular price From $1,109.00 -
Thunderheader™ Dyna Megaphone Exhaust Design - Chrome (06' - 17')
The 1039 Model Fits 2006-2017 Dynas, EXCLUDING Switchbacks. Features 1 3/4″ head pipes to our patented megaphone muffler design. Comes with 18mm & 12mm O2 Sensor ports. Includes a transmission bracket, clamp, and all hardware to...Regular price From $1,109.00Regular price From $1,109.00 -
Thunderheader™ FXR – All EVO Styles W/ CNT Controls – Black (14' - 21')
The 1012B Model Fits 1986 – 2003 Sportster Features 1 3/4 head pipes to our patented megaphone muffler design. Includes a transmission bracket and all hardware to mount the exhaust. We do not offer heat shields...Regular price $1,012.00Regular price $1,012.00 -
Thunderheader™ FXR – All EVO Styles W/ CNT Controls – Chrome (86' - 03')
The 1012 Model Fits 1986 – 2003 Sportsters. Features 1 3/4 head pipes to our patented megaphone muffler design. Includes a transmission bracket and all hardware to mount the exhaust. We do not offer heat shields for...Regular price $1,079.00Regular price $1,079.00 -
Thunderheader™ FXR – Fits All Models (FWD/CNT Controls) – Black (04' - 06')
The 1059 Model Fits 2004 – 2006 Sportsters. Features 1 3/4 head pipes to our patented megaphone muffler design. No O2 sensor ports. Includes a transmission bracket and all hardware to mount the exhaust. Heat shields sold...Regular price From $999.00Regular price From $999.00
Stock powerplants leave crucial horsepower on the table. Upgrade your motor with high-flow air intakes, performance carburetors, high-lift camshafts, and complete big bore kits engineered for brutal low-end torque and high-RPM power. Seal up your cases, dial in your air-fuel mixture, and keep your engine screaming down the pavement.