165mm pullback

loosening it where others do nothing but slip-off

Can be used with factory valve springs

Will replace all late model 'round top' top windows

and 3/8 inch

cobra 4 909 twins slip on mufflers for harley BS90 165mm pullbackCobra 4" 909 Twins Slip On Mufflers for Harley Davidson The Cobra 909 Twins 4" slip on mufflers are an ideal choice for Harley Davidson enthusiasts seeking to enhance their bike's sound and aesthetics. These mufflers feature a sophisticated satin black or chrome finish, providing a sleek and modern appearance. Each muffler is crafted with a rolled inner tip, matched to an inner core that boasts a scalloped cut, delivering a unique and refined look.