The rider has a 16-1/2" wide bucket and the passenger section is 14" wide

OEM style replacement for 17572-99 upper & 17573-99 lower covers

Fitting threads type: OEM style 3/8-24 inverted flare

Fixed single fire and selectable single/dual plug

Replaces 32605-70

4" 2:1 Fat Shot System, Chrome Sadel/Seats The rider has a 16-1/2"06 11 Dyna Famous proven tunable disc based performance. Add or subtract discs to optimize power and sound 1. 75" primaries flow into 2. 5" true collector for huge torque gains 3. 5" muffler body flares out to 4" 2. 5" performance core with 'pillow pack' insulation Supplied with discs, closed end cap and trim ring Include detailed instructions and all necessary mounting hardware Add 4 discs to increase horsepower, exhaust tone and flow Subtract 4