Khrome Werks HP Plus Slip-On Mufflers For Harley Softail Whether you are looking to upgrade your pipes for an increase in power or you just want a better tone, you can't go wrong with a set of American made slip-ons from Khrome Werks. These HP-Plus mufflers feature a steel baffle with high-temperature fiberglass packing that will increase the performance of your bike while adding a deep growl to your exhaust note. Features: Patented steel construction baffle now features more high-temperature fiberglass packing Uses all factory mounting hardware OEM heat shields may be retained