THUNDERHEADER™ X-SERIES™ for
2017 Harley-Davidson FLH Models
1073X - $1,239 (Chrome)
1073XB - $1,364 (Black)
1075XF (Add on Falsee System in Chrome) - $530
1075XFB (Add on Falsee System in Black) - $575
Our X-SERIES™ 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. Comes complete with full coverage heat shields and 12mm O2 sensor ports. Available in Chrome or Black.