Sy-Klone International's OPTIMAX Dual Stage Precleaner utilizes the Series 9000 Atomospheric precleaner as the first stage and OPTIMAX technology in the second stage of the precleaning process. This patented process removes more debris than a single stage precleaner without adding additional restriction to the intake system. Unlike competitive tube body type precleaners the open architecture of the OPTIMAX allows for ease of cleaning. There are no small orifices for dirt to get clogged. The OPTIMAX-AG takes this technology and applies it to high chaff environments like Harvesting and foraging. The OPTIMAX does require exhaust scavenging to operate the second stage of the precleaner.