S&S Cycle SS-170-0093 Stealth Air Cleaner Kit w/out Cover for H-D XL Sportster 91-06 Models w/Stock CV CarbIncreased filter area, combined with an air horn like radiused inlet and unique S&S stinger cone to allow smoother faster airflow for more power. Add a stylish, high performance look with a number of good looking available covers. Kit includes a backplate, filter element, top cover, hardware, and instructions. FEATURES & BENEFITS 5% increase in hp High strength, die cast aluminum backplate High flow (1" taller) filter kit also available, part number