For Honda Civic Si Aluminum Air Intake System (Velocity Stack Filter) EP EP3 Short ram intake helps engine to draw in more and colder air resulting in better throttle response and higher explosive horsepower output Aluminum Intake Tubing Removes Restriction From Stock Pipes High-Flow Air Filter Material Made of Micro Cotton Gauze, washable and reusable Improves filtration efficiency up to 95% Aluminum Tubing Built For Durability & Strength