S&S CYCLE - GNX SLIP-ON MUFFLERS - 4-1/2" - BLACK - M8 FLGNX Slip On Mufflers 4 1 2" Black M8 FL Highlights Muffler bodies measure a full 4 1 2" OD Premium fit, finish, sound and power S&S racing heritage styled end caps with black tuxedo finish SAE J2825 Sound Level Compliant (with included dB reducer installed) Relieved for shocks up to 13 1 2" in length Sold in pairs Made in USA Notes Black finish is exact match to OEM heat shields. Not for Trike applications. + Fitment 2017 2025 Harley Davidson Electra