Thunderheader
Thunderheader Exhaust Systems are built for riders who want performance you can feel and a sound you can’t ignore. Made in the USA, Thunderheader’s patented 2-into-1 design delivers proven horsepower, torque, and that unmistakable deep Harley tone.
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Thunderheader - Chrome X-Series Standard Exhaust w/Heat Shields fits 2025 Low Rider ST & Heritage Models
Thunderheader
$1,899.00Thunderheader - Chrome X-Series Standard Exhaust w/Heat Shields fits 2025 Low Rider ST & Heritage Models Our X-SERIES™ Exhaust is our newest line in creating maximum horsepower. With our...$1,899.00 -
Thunderheader - Black X-Series Standard Exhaust w/Heat Shields fits 2025 Low Rider ST & Heritage Models
Thunderheader
$1,839.00Thunderheader - Black X-Series Standard Exhaust w/Heat Shields fits 2025 Low Rider ST & Heritage Models Our X-SERIES™ Exhaust is our newest line in creating maximum horsepower. With our...$1,839.00 -
Thunderheader - Black Exhaust w/Center Controls fits '87–'00 FXR Models
Thunderheader
$999.00Thunderheader - Black Exhaust w/Center Controls fits '87–'00 FXR Models This system is built specifically for 1987–2000 FXR models and features 1-3/4 inch head pipes flowing into...$999.00 -
Thunderheader - Chrome Exhaust w/Center Controls fits '87–'00 FXR Models
Thunderheader
$1,079.00Thunderheader - Chrome Exhaust w/Center Controls fits '87–'00 FXR Models This system is built specifically for 1987–2000 FXR models and features 1-3/4 inch head pipes flowing into...$1,079.00 -
Out of stock
Thunderheader - Black 2-Into-1 X-Series Exhaust w/Heat Sheilds fits '17–'25 FLH Touring Models
Thunderheader
$1,839.00Thunderheader - Black 2-Into-1 X-Series Exhaust w/Heat Sheilds fits '17–'25 FLH Touring Models Our Thunderheader™ X-SERIES™ Exhaust is our newest line in creating maximum horsepower...$1,839.00 -
Thunderheader - Chrome 2-Into-1 X-Series Exhaust w/Heat Sheilds fits '17–'25 FLH Touring Models
Thunderheader
$1,899.00Thunderheader - Chrome 2-Into-1 X-Series Exhaust w/Heat Sheilds fits '17–'25 FLH Touring Models Our Thunderheader™ X-SERIES™ Exhaust is our newest line in creating maximum...$1,899.00 -
Thunderheader - Black X-Series Standard Exhaust Pipe w/Heat Shields fits '18–'25 Softail Slim, Lowrider S, Street Bob, Fat Bob, Deluxe & Standard Models
Thunderheader
$1,839.00Thunderheader - Black X-Series Standard Exhaust Pipe w/Heat Shields fits '18–'25 Softail Slim, Lowrider S, Street Bob, Fat Bob, Deluxe & Standard Models THunderheader's X-SERIES™...$1,839.00 -
Thunderheader - Chrome X-Series Standard Pipe w/Heat Shields fits '18–'24 fits Low Rider ST, Heritage, & Sport Glide Models
Thunderheader
$1,899.00Thunderheader - Chrome X-Series Standard Pipe w/Heat Shields fits '18–'24 fits Low Rider ST, Heritage, & Sport Glide Models Our X-SERIES™ Exhaust is our newest line in creating...$1,899.00 -
Thunderheader - Chrome X-Series Standard Exhaust Pipe w/Heat Shields fits '18–'25 Softail Slim, Lowrider S, Street Bob, Fat Bob, Deluxe & Standard Models
Thunderheader
$1,899.00Thunderheader - Chrome X-Series Standard Exhaust Pipe w/Heat Shields fits '18–'25 Softail Slim, Lowrider S, Street Bob, Fat Bob, Deluxe & Standard Models THunderheader's X-SERIES Exhaust is...$1,899.00 -
Thunderheader - Black X-Series Standard Exhaust w/Heat Shields fits '18-'24 Low Rider ST, Heritage & Sport Glide Models
Thunderheader
$1,839.00Thunderheader - Black X-Series Standard Exhaust w/Heat Shields fits '18-'24 Low Rider ST, Heritage & Sport Glide Models Our X-SERIES™ Exhaust is our newest line in creating maximum...$1,839.00 -
Thunderheader - Black Heat Shield Set (3) fits Thunderheader® Exhaust Systems (See Desc.)
Thunderheader
$299.95Thunderheader - Black Heat Shield Set (3) fits Thunderheader® Exhaust Systems Thunderheader Heat Shield sets are sold separately from the exhaust system. Designed to work with the following...$299.95 -
Thunderheader - Chrome Heat Shield Set (3) fits Thunderheader® Exhaust Systems (See Desc.)
Thunderheader
$399.95Thunderheader - Chrome Heat Shield Set (3) fits Thunderheader® Exhaust Systems Thunderheader Heat Shield sets are sold separately from the exhaust system. Designed to work with the following...$399.95 -
Thunderheader - Black 2-Into-1 Exhaust System fits '06-'17 Dyna Models W/ Mid & Forward Controls (18mm & 12mm O2 Sensor Ports)
Thunderheader
$1,099.95Thunderheader - Black 2-Into-1 Exhaust System fits '06-'17 Dyna Models W/ Mid & Forward Controls (18mm & 12mm O2 Sensor Ports) The Thunderheader 2 into 1 exhaust system features a patented...$1,099.95 -
Thunderheader - Black 2-Into-1 Exhaust System fits '99-'05 Dyna Models W/ Mid & Forward Controls (No O2 Ports)
Thunderheader
$1,034.95Thunderheader - Black 2-Into-1 Exhaust System fits '99-'05 Dyna Models W/ Mid & Forward Controls (No O2 Ports) The Thunderheader 2 into 1 exhaust system features a patented collector design that...$1,034.95 -
Out of stock
Thunderheader - Black 2-Into-1 Exhaust System fits '93-'98 Dyna Models W/ Mid & Forward Controls
Thunderheader
$976.00Thunderheader - Black 2-Into-1 Exhaust System fits '93-'98 Dyna Models W/ Mid & Forward Controls The Thunderheader 2 into 1 exhaust system features a patented collector design that allows spent...$976.00 -
Thunderheader - Chrome 2-Into-1 Exhaust System fits '06-'17 Dyna Models W/ Mid & Forward Controls (18mm & 12mm O2 Sensor Ports)
Thunderheader
$1,109.00Thunderheader - Chrome 2-Into-1 Exhaust System fits '06-'17 Dyna Models W/ Mid & Forward Controls (18mm & 12mm O2 Sensor Ports) The Thunderheader 2 into 1 exhaust system features a patented...$1,109.00 -
Thunderheader - Chrome 2-Into-1 Exhaust System fits '99-'05 Dyna Models W/ Mid & Forward Controls (No O2 Ports)
Thunderheader
$1,079.00Thunderheader - Chrome 2-Into-1 Exhaust System fits '99-'05 Dyna Models W/ Mid & Forward Controls (No O2 Ports) The Thunderheader 2 into 1 exhaust system features a patented collector design that...$1,079.00 -
Out of stock
Thunderheader - Chrome 2-Into-1 Exhaust System fits '93-'98 Dyna Models W/ Center & Forward Controls
Thunderheader
$976.00Thunderheader - Chrome 2-Into-1 Exhaust System fits '93-'98 Dyna Models W/ Center & Forward Controls The Thunderheader 2 into 1 exhaust system features a patented collector design that allows...$976.00
Experience the Performance of Thunderheader 2-into-1 Exhaust Systems
Thunderheader Exhaust Systems first hit the scene in 1989 and quickly became known for their unmistakable sound and unmatched performance. Patented in 1992, the Thunderheader collector design set a new standard for Harley-Davidson exhaust systems by combining aggressive tone with proven horsepower and torque gains.
Each Thunderheader head pipe is tuned to the precise length and diameter needed to create maximum horsepower and a strong, smooth torque curve across the RPM range. Built in the USA and engineered for serious riders, Thunderheader 2-into-1 systems deliver a sound that’s as bold as their performance.
Like a powerful clap of thunder, these pipes bring power, torque, and attitude to your Harley — the kind of setup that turns heads every time you twist the throttle.