Unifilter Australia's Two Stage air filter for the Ducati Desert X is fully serviceable. The filter is supplied with a spare set of foam inserts.
The filter will seal perfectly in the air box. The filter has been made to be a snug fit in the air box. It is 5mm longer to take up the gap that the standard paper filter does not. You can be 100% dust will not bypass the seal.
*Using grease around the sealing edge of the filter is recommended*