Most fiegaos are purple. but so are a bunch of hongkong motors that come with the ebay chinese cars. my guess is the second. i dont recall fiegaos having screws to hold the back endbell on.pics of the endbell might help. for info on fiegao motors check finedesigns or offshoreelectrics. Fiegao are basic two pole brushless motors and are notorious for running hot ,being inexpsensive and the rear endbell falling off under impacts.