Ramair ProMax Large Universal Pleated 90mm Rubber Neck Air Filter in Enclosed Airbox 39381-T60-G01 Optimized airflow path to the

Optimized airflow path to the turbos

Tumbler Generator Valves (or "TGV" as they are most commonly referred to) can be found on Impreza WRX

Filter Neck Outer Diameter: 83mm (3

Available with a polished

Ramair ProMax Large Universal Pleated 90mm Rubber Neck Air Filter in Enclosed Airbox 39381-T60-G01 Optimized airflow path to theThe ProMax enclosed filter has a modular design. Supplied with a bell mouth inlet and base adapter the housing can be combined with a selection of Ramair and Proram filters in various neck sizes, making this great for multi fit applications. The aluminium enclosure shields against hot air keeping the intake temperatures low, while the bell mouth smoothes the airflow and significantly improves the performance. ProMax is great for applications in