TC Bros Ripple Air Cleaner For Harley CV / EFI Features Adds classic vintage style to your motorcycle Cover is beautifully hand cast from 356-T6 aluminum Washable cotton gauze filter element provides high performance air flow Kit attaches easily using the CNC machined, powder coated steel mounting bracket If installing on models using a CV carburetor, it is highly recommended to use in conjunction with a support bracket for longevity Support bracket for Big Twin models use 4000153 Support bracket for Sportster models use 744-484 EVO Big Twins and Sportster models also require breather bolts 744-483