Double-Groove 2-2 Exhaust System, E4, Black FXSTC 07-10, FLSTN 2017, FXSTD 2007, FLSTF 07-17, FLSTFB 10-17, FLSTFBS 15-16, FLSTC 07-17, FXSTB 2007, FLS 2017, FXST 2007 07-10 FXSTC, 07 FXSTD, 07-12, 14-17 FLSTF, 07-12, 14-17 FLSTC, 07 FXSTB, 07 FXST, 10-12, 14-17 FLSTFB, 17 FLSTN, 17 FLS, 16 FLSTFBS