BBR's exclusive U-Flow Air Filter System turns the filter around so it faces backwards, keeping it shielded from dirt and mud. It comes with a high-volume oversized Uni Air Filter maximizing airflow. This innovative upgrade allows the bike to be jetted for optimum performance. The U-Flow delivers a high volume of air to your carburetor resulting in sharper throttle response. Complete kit includes adapters to fit stock carbs. Sharper throttle response. Shields filter from dirt and debris. Maximizes air-flow with high-volume over-sized Uni Filter air filter. Allows bike to be jetted for optimum performance. Note: For stock frame applications, the Air Box Removal Bracket Included in kit should be used for added support of the LH shroud.