Pro Design K&N Filter Kits replace your faulty stock and restrictive air filter and adaptor to give you the performance you want. Your filter can now remain in place without the restriction inherent with the stock mounting lid. Includes a positive O-Ring seal, K&N high flow filter, Pre-filter, and all mounting hardware. This kit can save hundreds of dollars in engine repairs. With the Pro Flow Kits, in dry conditions, you can completely remove your airbox lid and maximize your air intake.