Rick’s Good Guys design air cleaner is made in Germany and characterized by an elaborate construction and an equally appealing design. Housing and base plate are milled out of billet aluminum CNC and feature an integrated engine ventilation that leads the oil back into the intake passage, preventing uncontrolled oil leakage from the air cleaner body. The air cleaner features integrated noise reduction which is not visible from the outside. The noise reduction can be removed to optimize performance, but note that this will void the approval. However, the technical appearance is only the visible part of the filter. Thanks to the K&N filter element and clever flow optimization this air cleaner meets the highest requirements. Approval is for the Rick’s air cleaner in combination with original exhaust systems and some adjustable aftermarket exhausts.