More flow...more go...right?
RCM have dipped into their 30 years of Subaru experience to give you the ultimate panel filter which is designed to increase airflow into the engine whilst using the standard airbox.
Their approach has been a no compromise solution to high performance filtration using the finest cotton media to ensure efficient particle removal, without sacrificing the flow of air into the turbo inlet tract. The rigid frame and metal gauze pleats ensure the filter retains shape under high flow scenarios and at the same time is edged with a soft supple rubber seal.
The filter can be periodically cleaned using hot soapy water and left to dry prior to refitting.