The Sidekick Air Cleaner Kit combines forged billet aluminum, clear polycarbonate and an angled shape for the best in function and style. Forged and CNC-machined into an angled shape for excellent leg room. Integrated polycarbonate top coat for long term durability. Patented hidden breather backing plate technology.. Breather design is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes. Integrated patented oil-catch to ensure no oil reaches the air filter and restricts air flow. Filter is made from black synthetic material wrapped in stainless steel mesh. Filters are washable and water-resistant. Air Cleaner Chrome