Special Offers
-
Thunderheader™ X-SERIES™ M8 Softail “HIGH PIPE” - Black (18' - 26')
Our X-SERIES™ “High Pipe” Exhaust is our newest line in creating maximum horsepower. With our 2″ headpipe, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight™ engine. Our “High Pipe”...Regular price $1,839.00Regular price $1,839.00 -
Thunderheader™ X-SERIES™ Softail “HIGH PIPE” - Black (18' - 25')
Our X-SERIES™ “High Pipe” Exhaust is our newest line in creating maximum horsepower. With our 2″ headpipe, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight™ engine. Our “High Pipe”...Regular price $1,723.00Regular price $1,723.00 -
Thunderheader™ X-SERIES™ Street Bob “HIGH PIPE” - Black (18' - 24')
Our X-SERIES™ “High Pipe” Exhaust is our newest line in creating maximum horsepower. With our 2″ headpipe, equal length tubes, and a larger collector, this exhaust is made specifically for Harley-Davidson’s Milwaukee-Eight? engine. Our “High Pipe”...Regular price $1,723.00Regular price $1,723.00 -
Thunderheader™ X-SERIES™ FLH Touring 2-In-1 Exhaust (17' - 26') - Black
The Thunderheader™ 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...Regular price From $1,839.00Regular price From $1,839.00 -
Thunderheader™ X-SERIES™ For Big Cubic Inch Engines (84' - 16') - Black
Features and includes Full Coverage Heat Shields.12mm & 18mm O2 Sensor Ports. Falsee System Sold Separately.Regular price From $1,839.00Regular price From $1,839.00 -
Thunderheader™ Megaphone Muffler Design Softail - Chrome (07' - 11')
The Thunderheader™ 1027 Model Fits 1986 – 2006 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...Regular price From $1,079.00Regular price From $1,079.00
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.