There is a few ways to tell and you can check the pics on the Swashdrive site .. if the ends of the motor are any color other than black it is a knock off ... also the knock offs are not machined they are straight out of the mold and still have all the seams & they look like shit compared to a proper one .... there is a few other ways you can tell but I don't want to let the bastards know all of them.

Samyo
Swashdrive