OEM style replacement for 25582-73

made from 356-T6 aluminum

Includes a foam filter element

ZINC PLATED

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

4" 2:1 Fat Shot System, Chrome Sadel/Seats OEM style replacement for 25582-7306 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