Feuling Parts BA Series Transparent Cover Air filterRef : FELG00037A / 10103318

BA Series Air Filter - Transparent Cover (manufacturer part no. 5464)

Designed for vintage builds and touring bikes seeking style and efficiency, this Feuling Parts kit combines a machined aluminium horn and a transparent acrylic cover to showcase the red filter media. Monoblock construction for a clean line and simplified installation compared to traditional multi-stack filters.

• Materials: machined billet aluminium horn, transparent acrylic cover, washable/reusable filter (2.5" wide) with monoblock cage.
• Design: round shape, black/transparent/red finish, rear plate engraved FEULING / MADE IN USA.
• Performance: elongated intake passages and optimised lip/cone to enhance airflow and air entry dynamics; developed and validated on a flow bench and on track.
• Ventilation: originally configured with OEM-type breather, ports optimised to meet emission standards.
• Compatibility: suitable for Evo Big Twin '93-'99 (breather, 1/2-13 bolts). May fit Evo '84-'92 (sump breathers, 5/16-18 bolts) with Feuling mounting kit #5100.

Ideal for Harley-Davidson Softail and classic builds (e.g. FXSTS, FXSTC, FXSTB 1999), this filter provides a polished aesthetic while offering a serious technical solution to optimise airflow without compromising the retro look of your machine.