Eliminate the biggest restriction in a Harley Sportster engine. Billet Aluminum backing plate with internal breathing passages for super clean installation. Billet Aluminum Chrome Black face plate. Filter is re-usable – simple wash, dry, and re-oil. Compatible with both carburated and fuel injected models. Backed by figure machine’s 100% satisfaction guarantee. Black anodized polished surface. Condition: Aftermarket 100% Brand New Filter Diameter: 4 Size between two mounting holes: 13 cm Item Name: Air Cleaner Intake Filter System Kit Housing Color: Clear (as the picture shows) Material: Billet Aluminum face plate with internal breathing passages for super clean installation. Item Dimension: as photo shown. 1988-Present Sportsters (All Models) Fits both carbureted and fuel injected models. 1x Air Cleaner Intake Filter with Accessories.