2004 -2008 Sportster side slash slip on mufflers cycle shack These Hi Performance slip fit SLASH CUT mufflers by Cycle Shack are designed for all 2004, 2005, 2006 & 2007 Sportster 1200's & 883's. They mount to the original head pipes and support brackets to insure ease of installation. They feature all steel performance baffles for that big sound & big power gains.