Collection:
Exhaust Systems
40 products
Thunderheader Dyna
2 reviews
Thunderheader Dyna
Patented Anti-Reversion design that produces maximum HP without sacrificing low end torque. Complete with all hardware needed to mount. Heat shields sold separately (set of 3 par...
Thunderheader FXR
4 reviews
Thunderheader FXR
Patented Anti-Reversion design that produces maximum HP without sacrificing low end torque. Complete with all hardware needed to mount. Heat shields sold separately (set of 3 part...
Thunderheader Touring
1 review
Thunderheader Touring
Designed to give maximum horsepower without sacrificing low-end torque
2-into-1 systems with patented collector design that directs spent exhaust gases in a spiral motion thr...
Thunderheader X Series M8 Softail
3 reviews
Thunderheader X Series M8 Softail
Designed to give maximum horsepower without sacrificing low-end torque
2-into-1 systems with patented collector design that directs spent exhaust gases in a spira...
Thunderheader X Series
1 review
Thunderheader X Series
The new THUNDERHEADER X-SERIES for Touring is our large diameter exhaust specifically designed for big cubic inch engines (107" and larger), built to produce big numbers. The...
Horsepower Inc Exhaust
Horsepower Inc Exhaust
HPi Performance Exhausts are 100% handmade in USA, TIG welded, and feature a perforated stainless muffler interior. Each exhaust is available in stainless finish, black cera...
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