We take Can-Am’s baddest motocross ATV for a ride on the Oregon Coast. The 2009 DS 450 mx put its considerable motor to use in the sand dunes for a few days of gritty testing. Check out the full story in our 2009 Can-Am DS 450 EFI X mx ATV Review.We take Can-Am’s baddest motocross ATV for a ride on the Oregon Coast. The 2009 DS 450 mx put its considerable motor to use in the sand dunes for a few days of gritty testing. Check out the full story in our 2009 Can-Am DS 450 EFI X mx ATV Review.