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Thunderheader

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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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.