PRO 5R is for maximum airflow, its for performance minded customers. Maximum airflow for maximum power performance. It’s the highest airflow progressive media filter available
Maximum Airflow, Maximum Gains: Provides Highest Airflow Levels For The Largest Gains In Horsepower And Torque For Times When Performance Is Everything
Progressive Filtration With Protection And Performance
5 Layers Of Progressively Finer Medical Grade Cotton Gauze