Add classic vintage style to your motorcycle with these tc bros.Choppers air cleaners in raw cast, black or polished finish.The covers are beautifully hand cast from 356-t6 aluminum right here in the usa.A washable cotton gauze filter element provides high performance air flow to your v-twin.Kits attach easily using the american made, cnc machined, powder coated steel mounting bracket.These ultra-compact kits are designed to fit all harley davidson® big twin and sportster models using factory cv carburetors or factory electronic fuel injection (efi) units.They will not fit '95-01 hd big twin models equipped with magneti marelli fuel injection units using dual bore throttle bodies.If installing on models using a cv carburetor, it is highly recommended to use in conjunction with a support bracket for longevity.Support bracket is not required on efi models.Note: evo big twins and '91-up sportsters also require crankcase breathers.