Special Offers
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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™ Softail “HIGH PIPE” - Chrome (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 $1,787.00Regular price $1,787.00 -
Thunderheader™ X-SERIES™ M8 Softail “HIGH PIPE” - Chrome (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 $1,787.00Regular price $1,787.00 -
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™ 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
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.