Vance & Hines Hi Output Slip Ons Black 68505 Vance & Hines Hi-Output Slip-ons address the need for a Slip-on system for the Victory's 106-ci V-Twin motor Every aspect of the Hi-Output Slip-ons design is singularly focused to yield maximum horsepower by improving the volumetric efficiency of heavily modified engines as well as stock Features an aggressive stepped styling and deep rich tone 4-1/2" outlet 3" perforated core baffle