I think that they are different. PBI sells a 16 for the TW200... https://shop.pbisprockets.com/product.sc?productId=329
It is a much bigger pain to change the TW front though. You have to take off the left side engine cover. If your gasket is bad, scraping sucks, and then you'll need to replace it. It is better with two people when reinstalling, to prevent pinching/cutting the stator wires because that magnet can make it surprising. Much easier to change the rear if all you want is a ratio change.