See more: EXHAUST GROUP - MUFFLERS FOR HARLEY
4-1/2" GNX Slip-On MufflersMuffler bodies measure a full 4-1/2" outer diameter Unique louvered baffle delivers a more aggressive tone, even with stock head pipes S&S racing heritage-styled end caps with a tuxedo black finish SAE J2825 sound level compliant (with included dB installed); dB reducer is removable Made in U.S.A.