Big Sucker Stage 1 performance intake adds new features to the original industry leading air cleaner. The new patented hidden breather system is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes. Smooth Stage 1 Air Cleaner Cover. Increases Horsepower and Torque. Patented Hidden Breather Technology. Pre-Oiled and Synthetic High Performance Filters. One-Piece Aluminum Backing Plate. Radius Air Inlet for Unobstructed Airflow.