Special Offers
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Thunderheader™ X-SERIES™ M8 Softail 2-In-1 Exhaust – Chrome (18' - 26')
Our X-SERIES™ Exhaust is our newest line in creating maximum horsepower. With our 2″ head pipes, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight™ engine. Includes full coverage heat...Regular price $1,839.00Regular price $1,839.00 -
Thunderheader™ FLH – X-SERIES™ Exhaust For Big Cubic Inch Motors – Chrome (89' - 16')
Thunderheader™ X-SERIES™ exhaust is their newest line in creating maximum horsepower. With their 2 headpipe, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson's Twin Cam engine. Includes full coverage heat...Regular price From $1,899.00Regular price From $1,899.00 -
Thunderheader™ X-SERIES™ Standard Pipe Softail Exhaust – Chrome (18' - 24')
The X-SERIES™ Exhaust is Thunderheader's™ newest line in creating maximum horsepower. With their 2″ head pipes, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight™ engine. Includes full coverage heat...Regular price $1,899.00Regular price $1,899.00 -
Thunderheader™ X-SERIES™ M8 Softail 2-In-1 Exhaust – Chrome (18' - 24')
Our X-SERIES™ Exhaust is our newest line in creating maximum horsepower. With our 2″ head pipes, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight™ engine. Includes full coverage heat...Regular price $1,839.00Regular price $1,839.00 -
Thunderheader™ X-SERIES™ M8 Softail 2-In-1 Exhaust – Chrome (25' - 26')
Our X-SERIES™ Exhaust is our newest line in creating maximum horsepower. With our 2″ head pipes, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight™ engine. Includes full coverage heat...Regular price $1,899.00Regular price $1,899.00 -
Thunderheader™ Megaphone Muffler Design Softail - Black (07' - 11')
The 1027B Fits 1986 – 2006 Softails. 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
Weak stock components won't hold up when you're pushing your machine to its limits on the asphalt or dirt. Upgrade your build with heavy-duty motorcycle parts and hard hardware engineered for maximum structural strength, high-stress endurance, and mechanical reliability. Eliminate weak points, torque down your setup right, and keep your ride performing at full throttle.